Augment Code
@augmentcode
More agents ≠ engineering transformation.
Meet Cosmos, the OS for agentic software development.
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@Claude Haiku 5.5 is now available in Cosmos.
Use it for fast, everyday coding work: quick edits, code questions, and short agent tasks where speed matters more than depth. Keep the larger models for the heavy lifting.
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Big news from Augment Code.
We've agreed to sell Cosmos, Auggie CLI, the Code Context Engine & related tech to @harnessio, the Autonomous SDLC Platform. Harness's integrated ecosystem provides the ideal home to deliver these capabilities at true enterprise scale.
We started Augment to help enterprises build software faster. As AI generates more code, orchestrating it reliably at scale has become the real bottleneck.
At Harness, our team will continue this work by bringing software factory capabilities to its Autonomous SDLC Platform.
Thank you to our customers, partners, investors, and team.
Read the announcement:
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From @OpenAI DevDay to @augmentcode... GPT-6.1 Sol is now available in Cosmos!
We'll be trying it in place of GPT-5.6 Sol and GPT-6 Sol in the coming days to power our software factory!
Claude Sonnet 5.5 by @AnthropicAI is now available in Cosmos!
Over the next few days we'll be rolling it into our agent loops in place of earlier Sonnet models, and tracking how it changes what our software factory ships.
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GPT-6 Sol and Luna by @OpenAI are now available in Cosmos!
We'll be upgrading all our workflows from the GPT-5.6 series of models in the coming days and measuring the impact on our software factory...
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Claude Opus 5.5 by @AnthropicAI is now available in Cosmos!
Agentic tasks running on Opus 5.5 are completed at 40% of the cost Opus 5, making it a must-have upgrade for Claude power users!
We're excited to see this model improve outcomes for our customers' software factories!
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If you’ll be in town for @TheLeadDev NYC this week, join us on Thursday for a practical, half day workshop on building your own software factory
Request a spot here:
Have you wondered why your single bug-fixing agent doesn't actually burn down your team's bug backlog effectively? Read this insight from Augment's CTO and co-founder @igoro, and let us know what you think!
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Why bug fixing is the least important part of a bug-fixing software factory
Software factories are very effective at burning down issue backlogs, but it's primarily NOT about the fix implementation.
See the next article in my series on software factories:
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Gemini 3.8 Flash is now half price in Augment for the next two weeks ($0.38/M input, $1.88/M output tokens).
Our team has been throwing mockups and screenshots at the new model and getting back web pages that can ship without a redesign pass. This is the cheapest the model gets, so it's a good time to point it at your hardest frontend work and find out what @GeminiApp is capable of!
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GPT-6 Astra is live in Cosmos!
OpenAI's most capable model yet brings a significant jump on long-horizon coding and multi-step agentic work.
Give it your hardest task to work on over the holiday weekend at
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Two new models are live in Cosmos today! We've come a long way since declaring that the era of single-model engineering is over and more models are coming soon...
GLM 5.3 Flash from @Zai_org (with US-based inference provided by @FireworksAI_HQ) is an order of magnitude cheaper than the most intelligent open-source models we've tested, while achieving the same level of intelligence as Sonnet 5.
Gemini 3.8 Flash from @GoogleDeepMind achieves a clear step in intelligence over Gemini 3.7 Flash at the same price point.
Try them both today:
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Our co-founder @igoro on software factories and where they are heading
Cloudflare, Vercel, Uber, LaunchDarkly, and others are building software factories.
I looked at how they work, the results so far, and what's next: will agents be prompting us?
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Claude Fable 5.1 is now available in our model picker! We're starting off with the same use cases as Fable 5 - extremely long, multi-step tasks that require deep reasoning - and we're increasingly pushing the model to complete tasks that can run unattended.
Try it today in Cosmos:
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In its first three days, @grok 4.6 had the fastest adoption curve of any model we've added to Cosmos to date. Try it today at
Gemini 3.7 Flash - the latest model from @GoogleDeepMind - is now live in Cosmos, our agent orchestration platform for building software factories.
For the next two weeks, build with it at half price
- $0.375/M input tokens
- $1.875/M output tokens
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Less than one month after @grok 4.5 came to Augment, @grok 4.6 is now available in Cosmos, our agent orchestration platform for building software factories.
Together with Augment's Context Engine, @grok models have become a powerful option for working across large codebases.
We're excited to see what our customers build with the most intelligent @grok model to date!
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The best value for every token: GPT-5.6 Sol is now our default in Cosmos
Eight models in eight weeks! After testing them all on real, long-horizon software development tasks, we’re making @OpenAI’s GPT-5.6 Sol the new default in Cosmos.
It’s the most token efficient model that clears our quality bar for the engineering loops that teams are setting up with Cosmos, our agent orchestration platform.
You still have the flexibility to pick any other models and when in doubt, just ask the Cosmos Advisor to pick the best model for the task.
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Our users have been really excited to try Kimi K3 and we're excited to bring it to Augment's product family. It is the most capable open-source model that we have tested to date. Try it today in Cosmos, our agent orchestration platform!
Congrats to the @Kimi_Moonshot team, and thanks to @FireworksAI_HQ for offering us US-hosted inference from day one.
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