Apex
- Family
- Apex
- Released
- 2026-10-01
- Context
- 262k
- Specialization
- code
- Openness
- Proprietary
- License
- ProprietaryCommercial use: conditional
- Weights
- Not released
- Code
- Unknown
- Training
- Fine-tuned
Cheapest of 2 routes · Callstack Apex API · cache read $0.200
About
Apex is Callstack's agentic coding model for mobile and web development, generally available since 1 October 2026. It is a Qwen-based model that Callstack post-trained on React and React Native source code, widely used open-source React Native libraries and its own engineering documentation, so it is strongest at React Native, React and Next.js work: building features, debugging, code review, tests, upgrades and migrations, including to the New Architecture. It has a 262,144-token context window and plugs into Claude Code, Cursor, Codex and other tools through OpenAI- and Anthropic-compatible endpoints.
Provider price ladder
Compare all 2Compare API pricing across 2 providers for input and output tokens, batch, and cached reads when available.
| Provider | Input / 1M | Output / 1M | Cache | Route |
|---|---|---|---|---|
| Callstack Apex API | $0.500 | $3.00 | read $0.200 | Serverless |
| Vercel AI Gateway | $0.500 | $3.00 | read $0.200 | Serverless |
Capabilities
Benchmark peer barsfor Coding
No task-mapped benchmark peers are available for this model yet.
Migration checks
No linked migration route is available for this model yet.
API versions
Apexapexapex-20261001callstack/apexPixel CanaryCheapest of 2 routes · Callstack Apex API · cache read $0.200