--- title: Apex Is Now Generally Available: Agentic Coding for... description: Callstack's Apex coding model, specialized in React Native with strong Next.js performance, is now generally available after a stealth preview on Vercel AI... canonical: https://daily.dev/posts/apex-is-now-generally-available-agentic-coding-for-mobile-and-web-specialized-in-react-2ynhwjaxy twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Apex Is Now Generally Available: Agentic Coding for Mobile and Web, Specialized in React | daily.dev og:description: Callstack's Apex coding model, specialized in React Native with strong Next.js performance, is now generally available after a stealth preview on Vercel AI... og:url: https://daily.dev/posts/apex-is-now-generally-available-agentic-coding-for-mobile-and-web-specialized-in-react-2ynhwjaxy og:image: https://api.daily.dev/og/posts/2YnhWjaXy.png og:image:alt: Apex Is Now Generally Available: Agentic Coding for Mobile and Web, Specialized in React og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Apex Is Now Generally Available: Agentic Coding for Mobile and Web, Specialized in React **[Callstack Blog](https://daily.dev/sources/callstack-blog)** · 6 min read · 1 upvotes · 0 comments ## Summary Callstack's Apex coding model, specialized in React Native with strong Next.js performance, is now generally available after a stealth preview on Vercel AI Gateway under the name Pixel Canary. Built on a Qwen foundation with custom domain training, Apex targets agentic coding workflows (debugging, review, testing) at a lower cost than GPT-6 Sol and Claude Opus 5.5. API pricing starts at $0.50/million input tokens, with cached input at $0.20 and output at $3.00. A code review benchmark against Claude Opus 5.5 showed Apex completing the task in 2:16 for $0.09 versus 13:30 for $0.60. Commercial self-hosting is available, and dedicated iOS/Android models are planned next. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Questions this post answers ### What is Apex by Callstack and how does it compare in price to Claude Opus 5.5 and GPT-6 Sol? Apex is Callstack's specialized coding model for React Native and Next.js, now generally available via an API and commercial self-hosting. Pricing starts at $0.50 per million input tokens, cached input at $0.20, and output at $3.00 — 70% less than GPT-6 Sol's output pricing and 85% less than Claude Opus 5.5's. It was built on a Qwen foundation after starting on Gemma 4. _Developers comparing coding model costs before adopting one can track pricing changes like these on daily.dev._ ### How did Apex perform against Claude Opus 5.5 on a code review task in a real React Native repository? In a recorded comparison on the Expensify React Native repository, Apex completed a code review in 2 minutes 16 seconds for $0.09, while Claude Opus 5.5 took 13 minutes 30 seconds for $0.60. That is roughly 85% lower cost and about six times faster completion on that single task, using launch-day API pricing. _Teams weighing coding agents for React Native workflows can follow benchmark results like this on daily.dev._ ### What was Pixel Canary on Vercel AI Gateway and how is it related to Apex? Pixel Canary was the anonymous stealth-preview name Callstack used to release Apex on Vercel AI Gateway before publicly revealing it. During the preview it completed 28 of 31 tasks on Vercel's Next.js evaluation, matching GPT-6 Astra at high effort, and 30 of 31 when given Next.js documentation via AGENTS.md, while serving over 200B tokens across 5 days. _Developers tracking new entrants in the AI coding model space can follow announcements like this on daily.dev._ ## Similar posts on daily.dev - [Claude Pricing in 2026 for Individuals, Organizations, and Developers](https://daily.dev/posts/claude-pricing-in-2026-for-individuals-organizations-and-developers-77ufsy3ox) · finout · 1 upvotes · 0 comments - [OpenAI’s new $100 tier targets developers hitting Codex \(and Claude Code\) limits](https://daily.dev/posts/openai-s-new-100-tier-targets-developers-hitting-codex-and-claude-code-limits-a63cw44kk) · The New Stack · 0 upvotes · 0 comments --- Tags: [#llm](https://daily.dev/tags/llm), [#ai-agents](https://daily.dev/tags/ai-agents), [#nextjs](https://daily.dev/tags/nextjs), [#react-native](https://daily.dev/tags/react-native) [View this post on daily.dev](https://daily.dev/posts/apex-is-now-generally-available-agentic-coding-for-mobile-and-web-specialized-in-react-2ynhwjaxy) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Apex Is Now Generally Available: Agentic Coding for Mobile and Web, Specialized in React","url":"https://daily.dev/posts/apex-is-now-generally-available-agentic-coding-for-mobile-and-web-specialized-in-react-2ynhwjaxy","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/apex-is-now-generally-available-agentic-coding-for-mobile-and-web-specialized-in-react-2ynhwjaxy"},"datePublished":"2026-10-01T15:38:49.787Z","dateModified":"2026-10-01T15:41:39.732Z","description":"Callstack's Apex coding model, specialized in React Native with strong Next.js performance, is now generally available after a stealth preview on Vercel AI...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/9a355e8d8454576244252812cf5de877?_a=AQAEuop","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/9a355e8d8454576244252812cf5de877?_a=AQAEuop","isAccessibleForFree":true,"articleSection":"Callstack Blog","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"Callstack Blog","logo":"https://media.daily.dev/image/upload/s--3qItoroi--/f_auto,q_auto/v1774179048/logos/callstack-blog?_a=BAMAMiWQ0","url":"https://daily.dev/sources/callstack-blog"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/apex-is-now-generally-available-agentic-coding-for-mobile-and-web-specialized-in-react-2ynhwjaxy","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":1},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"llm,ai-agents,nextjs,react-native","timeRequired":"PT6M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Callstack Blog","item":"https://daily.dev/sources/callstack-blog"},{"@type":"ListItem","position":3,"name":"Apex Is Now Generally Available: Agentic Coding for Mobile and Web, Specialized in React"}]} {"@context":"https://schema.org","@type":"FAQPage","@id":"https://daily.dev/posts/apex-is-now-generally-available-agentic-coding-for-mobile-and-web-specialized-in-react-2ynhwjaxy#faq","mainEntity":[{"@type":"Question","name":"What is Apex by Callstack and how does it compare in price to Claude Opus 5.5 and GPT-6 Sol?","acceptedAnswer":{"@type":"Answer","text":"Apex is Callstack's specialized coding model for React Native and Next.js, now generally available via an API and commercial self-hosting. 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