A family of specialized models that also work well for general development. Currently SOTA in React Native, more coming. Brought to you by @callstackio
Poland
- Tweets 64
- Following 4
- Followers 780
- Likes 150
Apex (by Callstack) retweeted
Put @apex__ai on a React issue from your backlog 🔎 It currently ranks #2 in ReactBench’s Fixing React category: finding and fixing problems in existing code while preserving behavior. Try it in your repo: clstk.com/3VJmM4Z
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Apex (by Callstack) retweeted
I love having access to unlimited tokens (like @apex__ai for everyone at Callstack).
Opus 5.5 is king this month but there’s a lot of workload that I can just throw at a cheapest model that’s governed by a frontier one.
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Apex (by Callstack) retweeted
Use @apex__ai in your usual coding agent or wire it into your own tooling. The API is OpenAI- and Anthropic-compatible, so you can keep your workflow.
Get API access: clstk.com/47icZ8o
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Apex (by Callstack) retweeted
We trained Apex for React Native. It landed #2 at fixing web React.
Callstack's Apex is tied #5 overall on @aidenybai's ReactBench. React Native tuning carries over to the web.
Try it on Vercel AI Gateway or apex.callstack.com
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Apex (by Callstack) retweeted
This is true! We are going to write up a post about it soon and what we managed to achieve in 24 hours with apex.
Mobile support for @c15tdev is coming very soon thanks to Apex.
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Apex is #2 model in fixing React apps.
Throw it at your web code too 🧹
We trained Apex for React Native. It landed #2 at fixing web React.
Callstack's Apex is tied #5 overall on @aidenybai's ReactBench. React Native tuning carries over to the web.
Try it on Vercel AI Gateway or apex.callstack.com
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Apex (by Callstack) retweeted
Big news: @apex__ai is now on Vercel AI Gateway!
Try our coding model for React Native, React, and Next.js through your existing Gateway setup ⬇️ vercel.com/ai-gateway/models…
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Apex (by Callstack) retweeted
There’s a cheap coding model that’s SOTA in React Native and Next.js available on AI Gateway.
It’s called Apex.
vercel.com/ai-gateway/models…
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Apex (by Callstack) retweeted
First model from Poland on Vercel AI Gateway. Let's go @callstackio! 🇵🇱
vercel.com/ai-gateway/models…
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Apex (by Callstack) retweeted
Have you heard that @apex__ai is live? 🎉 It's our coding model specialized in React Native, and you can use it in Claude Code, Cursor, or Codex. Try it on a task from your project: clstk.com/3Vmf4xt
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T3 Code + OpenCode is one of our fav combinations to run Apex
In the latest T3 Code nightly with orchestrator v2 I can finally spawn new threads from a single prompt!
Codex has this feature and I missed it so much. Thank you @jullerino @theo 🙏
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Apex (by Callstack) retweeted
Celebrating @callstackio’s APEX launch! 🎉
I connected APEX to my Vault Terminal (callstack.com/blog/building-…) for some classic RPG gaming. 🎮
@OpenAIDevs has Codex × @modretro Chromatic.
We have @apex__ai × Vault. 😎
Still an early prototype (only one piece exists 😅).
Small company, big heart and even bigger ambitions! ❤️
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Apex (by Callstack) retweeted
Announcing Apex: agentic coding model for mobile and web, specialized in React.
We built Apex from a single idea: can an open-weight model deliver frontier-level performance at lower cost?
Yes. Apex is SOTA in React Native and Next.js.
Try it now: apex.callstack.com
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Apex (by Callstack) retweeted
e2e ⨯ @apex__ai
Introducing e2e
The agentic testing framework for any app
~/ npx e2e init
→ Fully Open Source
→ Mix deterministic and agentic APIs
→ Supports web, mobile, and more
→ Bring your own agent and infrastructure
→ Run locally or in CI
tester.army/e2e
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we really care about giving you a fast model. spent a lot of effort to make it so. thank you @modal for making it easier!
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Apex (by Callstack) retweeted
Today we’re bringing @apex__ai out of beta and out of stealth: agentic coding for mobile and web, with React Native as our first specialization.
Served at 200+ tok/s per user on a fleet of 4x NVIDIA B300 nodes, each with 1,152 GB of VRAM and 72 PFLOPS of peak compute.
Announcing Apex: agentic coding model for mobile and web, specialized in React.
We built Apex from a single idea: can an open-weight model deliver frontier-level performance at lower cost?
Yes. Apex is SOTA in React Native and Next.js.
Try it now: apex.callstack.com
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