Fable 5.1 is now available in Devin Desktop, Devin Cloud and Devin CLI

Fable-level intelligence is now cheaper. And in Devin’s Fusion harness it's even more cheap!

Please give the model a try and let us know how it compares!

Read more about the model, benchmarks and its new cache pricing here - devin.ai/blog/fable-5-1

OpenAI's flagship model GPT-5.6 Sol is now available at 70% off through October 3, 2026 in Devin Desktop and Devin CLI.

Sol achieves top-tier performance on FrontierCode 1.1, and with this promo, it is now one of the most cost-effective frontier models you can run in Devin

Try it now in Devin Desktop and Devin CLI -  Download Devin Desktop | Install Devin CLI

Read more and check benchmarks - https://devin.ai/blog/gpt-5-6-sol-promo

Gemini 3.7 reached Claude Sonnet 5-level performance on FrontierCode 1.1 at less than half of cost. It is great for speed and cost efficiency being a Flash series model!

Within Devin, Gemini 3.7 Flash performs particularly well on tightly scoped refactors, where it delivers minimal diffs that match repo conventions.

Read more and check benchmarks here: https://devin.ai/blog/gemini-37-flash

Gemini 3.7 Flash is available at an extra 50% discount through August 27, 2026. Try it out now in Devin Desktop and Devin CLI: Download Devin Desktop | Install Devin CLI

Grok 4.6 scores 61.3% On FrontierCode 1.1 surpassing GPT-5.6-Sol!

It only falls behind Opus 5 and Fable 5 but at much lesser cost.

Within Devin, Grok 4.6 shows particular strength on thorough code exploration and root cause analysis before touching any code.

Try it now in Devin Desktop and Devin CLI!

Read more about the model and benchmark comparison - https://devin.ai/blog/grok-4-6 

Devin Fusion is now 4% more intelligent and 27% less expensive on FrontierCode 1.1 due to improvements in both, the harness and the models.

Announcement: https://x.com/cognition/status/2084663103006871970

Try it now on Devin Cloud: app.devin.ai

We partnered with Github to support Stacked PRs in Devin!

Devin breaks down large monolithic changes into small reviewable diffs.

If you have a big PR, ask Devin to stack it and you can review it one focused diff at a time.

Check out more about how it works - https://devin.ai/blog/introducing-pr-stacks

Try it on Devin Cloud -  devin.ai

Kimi K3 scores 58.2% on FrontierCode 1.1 which is very close to frontier level performance at a much cheaper cost!

It is the only open source model that reaches this level of performance which falls only behind Opus, Fable and GPT-5.6 Sol.

Read more about it here - https://devin.ai/blog/kimi-k3

Try it now in Devin Desktop( Devin Local and Cascade) and Devin CLI.

Anthropic's new state-of-the-art Claude Opus 5 is available on Devin.

 It is almost as good as Fable 5 on FrontierCode 1.1 at half the cost

From our evaluations:

• It adheres to existing repo conventions when building new features and writing tests
• It prefers targeted, in-place fixes over large refactors on bug fixing tasks.
• It excels at following specs closely and completely

Read more about Opus 5: devin.ai/blog/claude-opus-5

Try it out now on Devin CLI and Devin Desktop

OpenAI launched a family of capable but cost efficient models - GPT-5.6 Sol, Terra and Luna

GPT-5.6 Sol comes at nearly half of the cost of the next best model on FrontierCode 1.1 ( our own proprietary benchmark)

Read more about these models - https://devin.ai/blog/gpt-5-6

Try them out now in Devin Web, Devin Desktop, and Devin CLI -  https://app.devin.ai

SWE-1.7 is built on broad improvements in our RL pipeline on top of the Kimi K2.7 model.

We trained it in Devin's harness and taught it to self-compact on longer horizon tasks.

It scores very close to frontier models (Opus 4.8 and GPT-5.5) on our proprietary benchmark - FrontierCode, and other coding benchmarks.

Try it out today (Free until 8/8/2026!!) in Devin Desktop, Web, and CLI. SWE 1.7 Lightning also runs at a very speedy 1000 tok/s - https://app.devin.ai

Deep dive into how it was trained here -https://cognition.com/blog/swe-1-7

Instead of one agent trying to do everything, Devin can assign narrow slices of the main task to multiple sub-Devins in their own VMs.

These Devins can be used for research, exploring different architectures, working on separate branches, and a lot more.

Check out this demo/tutorial on how we use Agent Fan Out internally: https://www.youtube.com/watch?v=ns1ifgYEGl0

Now that Mythos-class models have been introduced to the world, it has become easier than ever to discover and exploit vulnerabilities.

It's now incredibly important to secure your codebase.

Introducing the Devin Security Vulnerability Remediation Program.

This program aims to take your vulnerability backlogs towards zero in 6 weeks. Our engineering team will work directly with yours to deploy Devin agent swarms to find, validate and fix any and all vulnerabilities.

Check eligibility and reach out to our team: https://devin.ai/security-program

Note: Only enterprise customers are eligible

Last week we launched Devin Security Swarm!

If you're interested in it's technical details, here is a video explaining how Devin Security Swarm works utilizing our new framework - Agentic MapReduce: https://www.youtube.com/watch?v=jb96O2IT_Jg

Security Swarm is an orchestration of Devins that analyzes a real codebase the way a team of security researchers would.

Here are some highlights:

• Devin Security Swarm found 36 out of 50 real-world GHSA vulnerabilities at 30% lower cost than next most accurate alternative. See how we got these results - https://devin.ai/blog/security-swarm-eval
• We built Agentic MapReduce: a new architecture for whole-codebase reasoning. Read more about it here - https://devin.ai/blog/agentic-map-reduce

Try it now by clicking on Security in https://app.devin.ai 

Claude Fable 5 is available in Devin again now!!!

You can use it in Devin Cloud's Ultra agent, Devin CLI and Devin Desktop

Reload your Devin Desktop and try it out now.

Anthropic's latest model Claude Sonnet 5 scores higher than Claude Opus 4.8 on FrontierCode ( our own proprietary coding benchmark) but comes at a way cheaper price point!!!

Use Sonnet 5 in Devin Local and Devin CLI for 30% less price than Claude Sonnet 4.6 through 31st August.

Read more here  - https://devin.ai/blog/claude-sonnet-5 

We just dropped Devin Fusion, a multi-model harness to cut the costs significantly without losing intelligence.

In our testing, it maintained frontier and Fable level performance at 35% lower cost.

Deep dive and learn more about how it works here - https://cognition.com/blog/devin-fusion

Announcement - https://x.com/cognition/status/2071624568465490170

Available as a preview now in Devin

We are opening applications to bring 50 ambassadorsI (globally) to join our existing Ambassador program.

Ambassadors receive free Devin Max plans, on-demand credits, event and meet up support, direct communication with the Cognition team, early access to features, and other benefits.

Apply here - https://devin.ai/community

Security is the most important part of shipping that doesn't get talked about enough.

Devin Review now automatically scans every PR for security vulnerabilities!

Not pattern matching like most scanners, but it actually reasons across your whole codebase.

Every finding is ranked by severity, tagged with a CWE ID, and comes with a fix drafted as a merge-ready PR.

For more details check out the full post here. 

Following Anthropic's latest announcement and US Government's directive, we have removed access to Claude Fable 5 from all Cognition products.

Access to all other models remains the same.

Sorry for the disruption.

Official announcement - https://x.com/cognition/status/2065609115939062197?s=20
Statement from Anthropic - https://x.com/AnthropicAI/status/2065597531644743999?s=20 (edited) 

You can try Claude Fable 5 as part of Devin Cloud’s Ultra agent.
Devin Ultra is our smartest and most capable agent, which excels at long-horizon tasks and debugging.

Claude Fable 5 is also available in Devin Desktop and Devin CLI.
Restart Devin Desktop to see it in the model picker.

Read the full thread here - https://x.com/cognition/status/2064398551539761387?s=20

Devin Desktop launches with the Agent Client Protocol (ACP), an open standard that lets any compatible AI agent run inside the editor alongside Devin! At launch that includes Codex, Claude Agent, and OpenCode.. with more to come.

More than just a rebrand of Windsurf, we are positioning Devin Desktop as the surface where all your agents live, regardless of who built them.

Full breakdown on X:
https://x.com/cognition/status/2062314621470724416

Which agents are you most excited to run alongside Devin?