Cosine

Fancy joining the team? Take a look at our current open roles Open roles → The coding agent built for on-premise Unblocking development in complex, high-security enterprise codebases Available fully air-gapped or on your VPC Try now Contact us Trusted by Engineers at How Cosine works 1 Connect your tools Plug Cosine into GitHub, Jira, or Slack so it’s ready to work where you already are. 2 Launch multiple tasks Kick off bug fixes, features, or refactors all at once. Cosine handles them in parallel. 3 Review & merge with confidence Cosine drafts the PRs, you stay in control. Just review, approve, and hit merge. How Customers Are Using Cosine Asynchronous, multithreaded feature development Comprehensive bug scanning, fixing and test writing Large scale refactors and library updates Rapid understanding of legacy or third-party repos ("research mode") Task assignment and execution directly from Jira, Linear, Trello, Asana, Github, Slack, and more... Auto-generated an always up-to-date documentation CI/CD optimization & pipeline maintenance Security-focused code fixes and compliance-aligned improvements Migration and modernization of frameworks, services, and libraries Review metrics showing impact of Cosine on developer productivity Asynchronous, multithreaded feature development Comprehensive bug scanning, fixing and test writing Large scale refactors and library updates Rapid understanding of legacy or third-party repos ("research mode") Task assignment and execution directly from Jira, Linear, Trello, Asana, Github, Slack, and more... Auto-generated an always up-to-date documentation CI/CD optimization & pipeline maintenance Security-focused code fixes and compliance-aligned improvements Migration and modernization of frameworks, services, and libraries Review metrics showing impact of Cosine on developer productivity Asynchronous, multithreaded feature development Comprehensive bug scanning, fixing and test writing Large scale refactors and library updates Rapid understanding of legacy or third-party repos ("research mode") Task assignment and execution directly from Jira, Linear, Trello, Asana, Github, Slack, and more... Auto-generated an always up-to-date documentation CI/CD optimization & pipeline maintenance Security-focused code fixes and compliance-aligned improvements Migration and modernization of frameworks, services, and libraries Review metrics showing impact of Cosine on developer productivity Asynchronous, multithreaded feature development Comprehensive bug scanning, fixing and test writing Large scale refactors and library updates Rapid understanding of legacy or third-party repos ("research mode") Task assignment and execution directly from Jira, Linear, Trello, Asana, Github, Slack, and more... Auto-generated an always up-to-date documentation CI/CD optimization & pipeline maintenance Security-focused code fixes and compliance-aligned improvements Migration and modernization of frameworks, services, and libraries Review metrics showing impact of Cosine on developer productivity Human Benchmark237 real world tasks worth a total of $236k$155,55072% pass rateGenie Multi-agentGenieGenieo3GPT-4o Mind blowing eval results. Powered by Genie 2 Powered by our proprietary model, Genie 2, Cosine AutoPM achieves 72% on SWE-Lancer, outperforming OpenAI and Anthropic. Benchmark Built for Real Development SWE-Lancer is an agentic coding benchmark with the truest representation of software development work. Leading in Production‑Grade Tasks Our state-of-the-art result puts Cosine as the leading agent for production-grade tasks. Read about our evals The impact our customers have seen 0x Increase in A/B testing through Cosine 0x Faster iteration on new features by junior developers 0 minutes Time taken to clear 10 days’ worth of backlog 0 weeks Time taken to move a mature 2 million line codebase to AWS Your choice of deployment: Fully air-gapped In your VPC Different enterprises have different security requirements and different needs. That’s why Cosine is available for whatever on-premise set-up you have. The outcome is state-of-the-art coding accuracy, whatever your context. Fully air-gapped, on-premise Fully installed on your infrastructure with no external dependencies or data egress. Option to fine-tune on your internal codebase, frameworks, or languages (e.g. COBOL, Fortran) for unmatched legacy system support. Post-train any open-source model of your choice for software engineering, optimised by Cosine’s ML research lab to drive maximum accuracy per GPU. In your VPC Deploy Cosine within your VPC for complete control over your data and infrastructure. Secure, private deployment: Cosine runs entirely in your cloud, behind your firewall. Access to our frontier, state-of-the-art coding model Lumen for maximum accuracy and reliability. “Cosine shows what it looks like when AI works like a real-world developer. Genie 2 mirrors how engineers reason through complexity. It’s a foundational leap for software development.”Laura Modiano, OpenAI Start-Ups EMEA lead“I definitely see Cosine as one of the leading contenders in agentic programming. Most others just can’t do it, and they're cracking the code. The way Cosine has fine-tuned their model is particularly impressive: it ensures that the agent actually behaves well and digests a lot of context, which other providers consistently struggle with.”Nick Hughes, Technical DirectorCosine fits perfectly with agile and buddy programming it’s like having an AI partner. Both junior and senior developers picked it up instantly. It’s boosted productivity and become part of our team.”Cris Flagg, CEO, Flagg Consulting Safety, Trust & Transparency Cosine is built for enterprises where trust isn’t optional. Every line of code, every output, every decision is handled with the highest standards of security and compliance - far beyond what other AI tools can offer. Your IP stays yours All inputs and outputs remain your intellectual property. Enterprise-grade compliance SOC 2 attested, ISO 27001 aligned. Full visibility Audit logs and fine-grained access controls, built in. Seamless integration Works with your identity provider (IdP) for airtight access. Zero data leakage No training on shared models. Your code never leaves your environment. Private deployments On-prem or VPC air-gapped isolation options ensure full control. Regulatory alignment Designed for strict regimes like FINRA, HIPAA, ITAR, GDPR. Red-team tested Adversarial testing to prove resilience against attacks. Encryption everywhere Data is encrypted at rest and in transit with enterprise-grade keys. Granular governance Role-based access and policy enforcement tailored to sensitive orgs. Customer-controlled retention You decide what’s stored, for how long, or whether at all. No shadow AI No “mystery” training data, no co-mingling with public models. Continuous compliance Optional real-time monitoring and alerts on usage anomalies. Defence-grade hardening Designed to fit into zero-trust environments. Ready to deploy Cosine fully air-gapped? Book a call with our management team to see a demo and discuss a pilot Try now Contact us cosineTermsPrivacy Contact Us --- Welcome to CosineLogin below to continueBy logging in, you are agreeing to our Terms of Service & Privacy Policy --- Our most productive software engineer From a record-setting benchmark to your next AI teammate - how Genie became our most productive engineer. Genie is able to solve bugs, build features, refactor code, and everything in between either fully autonomously or paired with the user, like working with a colleague, not just a copilot. Experience Genie Read the full report June 2025Bringing a supervisor model from training time to product Introducing AutoPM. A monumental leap in complex feature and iterative coding performance With AutoPM enabled Genie is closer to human-level performance than ever before. Completely outshining every other agent currently on the market. May 2025Genie 2: State-of-the-art on SWE-Lancer Breaking through the 50% barrier Our latest Genie 2.1 iteration manages to solve just over half the published SWE-Lancer benchmark tasks. This represents an equivalent value of $107k of human work out of an maximum of $250k. December 2024Genie 2 early internal MVP Building Genie 2We took everything we learned from the dogfooding process and applied it to building Genie 2. We focused on making the model more reliable, and the product more intuitive. We also incorporated user feedback to enhance the overall experience.Built for the post-IDE eraIn this post-IDE era, Genie lets you assign any ticket — or even your entire backlog — and works fully asynchronously. You can return later to review, make small tweaks, and merge, all without opening your IDE. It writes unit tests, runs your CI, and when you want to collaborate in real time, Genie takes the lead while you copilot.Collaborate live or offload your workGenie is completely headless, but even the best code needs quick, on-the-spot adjustments. That’s why, in the past, when a Genie-generated pull request was 99% right, you could still feel stuck. This is why you have access to the same editor that Genie does so you can lean over its shoulder and make a change, instead of having to prompt it. It’s the closest experience we’ve had to working with a truly asynchronous teammate. We’re not claiming Genie can do everything for everyone. But it’s accelerated our own team’s velocity, and we know it can do the same for yours. September 2024Select customers onboarded to Genie 1 Vibe coding doesn't scaleWhen we started using Genie 1 in real workflows, it highlighted that several of our assumptions about how the model and product were built were off. Our benchmark scores were strong, but they didn't reflect many of the challenges that show up in real-world use.We learned the hard way that vibe coding doesn't scale, especially when working autonomously across large, existing codebases. So our approach had to become more nuanced. By this time Genie 1 had already become our most prolific contributor internally August 2024New state-of-the-art SWE-bench score with Genie 1 The start of something bigLast summer, we made real progress.We achieved the biggest score jump in SWE-Bench history and figured out how to generate billions of tokens of synthetic data that mimicked human reasoning, long before reasoning models were making headlines.We were onto something big, but we celebrated too early. January 2024Cosine moves from VS Code to be cloud-first Ready to deploy Cosine fully air-gapped? Book a call with our management team to see a demo and discuss a pilot Try now Contact us cosineTermsPrivacy Contact Us --- Terms and Conditions These terms apply to your use of any Products made available by Buildt AI Limited of 81 Rivington Street, London, England, EC2A 3AY (“Cosine”). By using our Products or otherwise accepting these terms of use, you agree to be bound by them in relation to all use of our Products.DEFINITIONS The following definitions apply in this document:Products means any of Cosine’s software products and services made available to you and your Users on and subject to the terms of this Agreement.Data Protection Legislation means the Data Protection Act 2018, Regulation (EU) 2016/679 of the European Parliament and of the Council, (the General Data Protection Regulation); any other existing or future law, directive or regulation (anywhere in the world) relating to the processing of personal data or privacy, to which either party is subject.Force Majeure means an event or cause beyond the reasonable control of the party claiming force majeure.Intellectual Property Rights means all rights in copyright, patents, inventions, trade secrets, know-how, product formulations, designs, databases, registered or unregistered trade marks, brand names, business names, domain names and other forms of intellectual property.User means any individual authorised by you to access any Product.ACCESS TO GENIESubject to your ongoing compliance with this Agreement, you are permitted, during the term of this Agreement only, to access and use our Products for your own internal business purposes only, subject to any feature restrictions or limitations communicated to you, including based on any subscription level chosen.You acknowledge and agree that our Products may be powered by artificial intelligence and machine learning models, and that such technologies will be used to provide our services to you.We reserve the right to upgrade, maintain, tune, backup, amend, add or remove features, redesign, improve or otherwise alter Products at our sole discretion. We shall not amend any Product in a manner that would intentionally cause you to lose access to data or functionality, or fundamentally decrease the utility of that Product to you.TERM This Agreement shall remain in force for one month initially and shall automatically renew on a month-to-month basis, unless one party provides the other party with notice of its intention to terminate this Agreement no later than 7 days before the expiry of the then-current month.CONTENT ACCESSIn order for us to provide our Products to you, we may require you to provide us with access to your existing software code repository or other content or services. We cannot provide you with access to our Products until such access has been provided, and such access must be maintained during the term of this Agreement.You warrant that our use of any of your content or services to provide access to our Products to you shall not infringe the rights of any third party.You warrant that the content and services you make available to us do not contain any personal data, and we shall not be responsible for processing any personal data on your behalf within the meaning of the Data Protection Legislation. We shall not be liable to you in any way in relation to any processing of personal data for you.You acknowledge that our Products do not integrate or merge any output software code into your code repository or your products and services. You remain responsible for checking that the outputs of our Products meet your requirements and for incorporating those outputs into your products and services at your discretion.FEESThe fees for the use of the Products are as notified to you by us from time to time. Fees are payable immediately upon receipt of an applicable invoice.If full payment is not received by the due date, we may suspend or withhold access to any of our Products to which you have access, or terminate this Agreement. We reserve the right to charge interest for any late payments at 4% above the prevailing Bank of England base rate.All prices are exclusive of applicable local, state, federal and international sales, value added, withholding and other taxes and duties of any kind unless otherwise stated.You shall pay all invoices for the use of our Products in full, and shall have no right of set off for any liability you may claim to be owed to you by us at any time.No refunds are payable for any fees paid under any circumstances.USE OF PRODUCTS Your use of our Products is subject to a fair usage limit. We may suspend or terminate your access to our Products at any time without liability to you if we reasonably believe that your use of our Products exceeds any fair usage limits.We may revoke or suspend access to our Products or terminate this Agreement at any time if you or any of your Users are in breach of this Agreement or misuse any Product and have failed to comply with our reasonable request to remedy such breach within a reasonable time period.You shall ensure that each of your Users are aware of and complies with any applicable terms of use of our Products, and you shall remain liable to us for any breach of this Agreement by your Users, and any losses or damages that we may suffer as a result of any such breach.You agree that you shall only use our Products for legal purposes and shall not use it to engage in any conduct that is unlawful, misleading, immoral, threatening, abusive, contrary to any third party rights, or in a way that is deemed unreasonable by us in our sole discretion.You must not publish any statements or claims regarding our Products or their performance, functionality or technical specifications.You must ensure that, at all times, you and your Users comply with all applicable international and national laws, rules and regulations in respect of your usage of our Products, including but not limited to any import/export, end-user, end-use and destination restrictions and regulations which may apply.We shall endeavour to respond promptly to all support requests in relation to our Products.We reserve the right to require the payment of reasonable fees for customisation of our Products and any non-standard support requests prior to the provision of such support.SECURITY & DATAWe take the security of our Products and your privacy seriously. We shall use industry-standard systems and processes to protect the security of our Products.You agree that your Users shall not do anything to prejudice the security or privacy of our systems (and the systems of our infrastructure providers) or the information on them.You are responsible for backing up your data, and we shall not be responsible for any loss of any of your data.We shall not use any data made available to us by you for any purpose other than providing you with access to our Products.You agree that we may collect anonymised data regarding your use of our Products for our business purposes, including to improve our Products. INTELLECTUAL PROPERTYOur Products may incorporate software and other proprietary systems and Intellectual Property Rights owned by us or which we have appropriate authority to use, and you agree that such is protected by copyright, trademarks, patents, proprietary rights and other laws, both domestically and internationally.You warrant that you shall not infringe on any third-party rights through the use of our Products.You warrant that by using our Products you and your Users will not:copy our Products or the services that it provides for your own commercial purposes; anddirectly or indirectly copy, recreate, decompile, reverse engineer or otherwise obtain, modify or use any source or object code, architecture, algorithms contained in our Productsor any documentation associated with them.We do not claim any Intellectual Property Rights in the outputs of our Products.We hereby indemnify you in relation to any claims, losses, damages and costs that you may suffer as a result of any claim that the use of our Products in accordance with this Agreement and any instructions provided by us to you infringes the Intellectual Property Rights of any third party. This indemnity shall not apply to any use of our Products by you or any User otherwise than in accordance with our reasonable instructions.LIABILITYExcept as otherwise provided in this Agreement, you acknowledge and agree that our Products are provided "as is," without additional warranty of any kind, either express or implied, including any additional warranty for information, data, data processing services or uninterrupted access, any warranties concerning the availability, accuracy, completeness, usefulness, or content of information, and any warranties of title, non-infringement, merchantability or fitness for a particular purpose.We do not warrant that our Products (or the function, content or services made available within them) will be timely, secure, uninterrupted or error free. If you are dissatisfied with our Products, the sole remedy is to discontinue using them.You acknowledge that our Products are hosted on third party infrastructure, and we shall not be liable to you for any costs, losses, damages, downtime, or other liability arising from the use of or reliance upon such third party infrastructure.Each party acknowledges that it has not relied on any representation, warranty or statement made by any other party, other than as set out in this Agreement.YOU AGREE THAT YOU USE OUR PRODUCTS AT YOUR OWN RISK. WE ACCEPT NO LIABILITY FOR SOFTWARE CODE OR AMENDMENTS TO SOFTWARE CODE PROVIDED AS A RESULT OF YOUR USE OF OUR PRODUCTS. YOU MUST ENSURE THAT ANY SUCH OUTPUTS ARE FIT FOR YOUR INTENDED PURPOSES. YOU ACKNOWLEDGE THAT YOU SHOULD ALWAYS FOLLOW SOFTWARE DEVELOPMENT BEST PRACTICES, INCLUDING IN RELATION TO CODE REVIEW, BEFORE COMMITTING ANY SOFTWARE CODE PROVIDED BY OUR PRODUCTS INTO YOUR OWN PRODUCTS AND SERVICES.YOU INDEMNIFY US FOR ANY LOSS, DAMAGE, COST OR EXPENSE THAT WE MAY SUFFER OR INCUR AS A RESULT OF OR IN CONNECTION WITH THE USE BY YOU OR YOUR USERS OF OUR PRODUCTS, INCLUDING ANY BREACH BY YOU OR ANY OF YOUR USERS OF THIS AGREEMENT AND ANY APPLICABLE DATA PROTECTION LEGISLATION.EXCEPT AS REQUIRED BY LAW, OUR MAXIMUM LIABILITY TO YOU IN RELATION TO THIS AGREEMENT SHALL NOT EXCEED THE FEES PAID IN THE TWELVE MONTHS PRECEDING THE DATE OF THE LIABILITY ARISING.IN NO CIRCUMSTANCES WILL WE BE LIABLE FOR ANY INCIDENTAL, CONSEQUENTIAL OR INDIRECT DAMAGES, LOSS OR CORRUPTION OF DATA, LOSS OF PROFITS, GOODWILL, BARGAIN OR OPPORTUNITY, LOSS OF ANTICIPATED SAVINGS OR ANY OTHER SIMILAR OR ANALOGOUS LOSS RESULTING FROM YOUR OR ANY USER'S ACCESS TO, OR USE OF, OR INABILITY TO USE OUR PRODUCTS, WHETHER BASED ON WARRANTY, CONTRACT, TORT, NEGLIGENCE, IN EQUITY OR ANY OTHER LEGAL THEORY, AND WHETHER OR NOT WE KNEW OR SHOULD HAVE KNOWN OF THE POSSIBILITY OF SUCH DAMAGE, TO BUSINESS INTERRUPTION OF ANY TYPE, WHETHER IN TORT, CONTRACT OR OTHERWISE.TERMINATIONWhere a party is in material breach of this Agreement, and has failed to remedy such breach within 28 days of notification by the other party, the other party may terminate this Agreement by giving written notice of termination, which shall become effective 5 working days after the date of the notice.Either party may terminate this Agreement immediately by notice, if either party: stops or suspends or threatens to stop or suspend payment of all or a class of its debts; is insolvent under company law;has an administrator appointed in respect of it;has an order made or a resolution passed for its winding up or dissolution or it enters into an arrangement, compromise or composition with or assignment for the benefit of its creditors or a class of them;has any security enforced over, or a distress, execution or other similar process levied or served against, the whole or a substantial part of its assets or undertaking; oris subject to any event which, under the law of any relevant jurisdiction, has an analogous or equivalent effect to any of the events listed above.Expiry or termination of this Agreement is without prejudice to and does not affect the accrued rights or remedies of any of the parties arising in any way out of this Agreement up to the date of expiry or termination.Rights and obligations under this Agreement shall survive termination of this Agreement where reasonably required to give commercial effect to such rights and obligations.FORCE MAJEUREIf a party is prevented in whole or in part from carrying out its obligations under this Agreement as a result of Force Majeure, it will promptly notify the other party accordingly. While the Force Majeure continues, the obligations which cannot be performed because of the Force Majeure will be suspended, other than obligations to pay money that is due and payable.The party that is prevented from carrying out its obligations under this Agreement as a result of Force Majeure must remedy the Force Majeure to the extent reasonably practicable and resume performance of its obligations as soon as reasonably possible.The term of this Agreement will not be extended by the period of Force Majeure.OTHER PROVISIONSWe may amend this Agreement at our discretion from time to time. We shall communicate any significant changes to this Agreement to you. If you do not agree with any changes, your sole remedy shall be to terminate your subscription to the relevant Product.This Agreement shall be governed by and construed and enforced in accordance with the laws of England and Wales.Each Party expressly agrees that exclusive jurisdiction for resolving any claim or dispute between us relating in any way to use of our Products shall be with the courts of England and Wales.You may not assign or otherwise license or transfer any of your rights and obligations under this Agreement.Each party acknowledges that it has not relied on any representation, warranty or statement made by any other party, other than as set out in this Agreement.The relationship of the parties to this Agreement does not form a joint venture or partnership.You agree that we may reference your use of our Products in our promotional materials.No clause of this Agreement will be deemed waived and no breach excused unless such waiver or consent is provided in writing.Any clause of this Agreement, which is invalid or unenforceable is ineffective to the extent of the invalidity or unenforceability without affecting the remaining clauses of this Agreement. Ready to deploy Cosine fully air-gapped? Book a call with our management team to see a demo and discuss a pilot Try now Contact us cosineTermsPrivacy Contact Us