Apex
by CallstackChat
Multimodal reasoning model for visual analysis, planning, and tool use
- Context
- 262K tokens
- Max output
- 131,072 tokens
- Released
- 2026-10-08
- Weights
- Closed
callstack/apex
Specifications
Full facts as recorded, incl. what is unknown.
- Released
- 2026-10-08
- Weights
- Closed
- Input
- Text, Image
- Output
- Text
- Context window
- 262,144 max across endpoints
- Max output
- 131,072
- Providers
- 0 + 1 gateway, not counted as providers
- Epoch Capabilities Index
- not evaluated
- Direct price range
- $0.50 in at Vercel AI Gateway, via gateway, fees not verified
More details
- Last updated
- 2026-10-08
- Knowledge cutoff
Capabilities
Across all endpoints: supported if any endpoint supports it.
- Tool calling
- Parallel toolsunknown
- Structured outputunknown
- Reasoning
- Image input
- PDF input
- Audio input
- Audio outputunknown
- Video input
- Prompt cachingunknown
- Web searchunknown
- Computer useunknown
- System messagesunknown
- Assistant prefillunknown
- Temperatureunknown
- Streamingunknown
- Attachments
Endpoints
One row per provider and variant; gateways are listed separately.
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Cost calculator
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Similarly priced models
Blended rate per 1M tokens, each at its own cheapest provider (10M input : 2M output mix).
| Model | Blended/1M | In/1M | Out/1M | Context | vs Apex |
|---|---|---|---|---|---|
| Dola Seed 2.0 CodeByteDance Seed | $0.917 | $0.50 | $3.00 | 131K | +0% |
| Seed 2.0 ProByteDance Seed | $0.917 | $0.50 | $3.00 | 131K | +0% |
| Seed 2.0 Code Preview (260328)ByteDance Seed | $0.917 | $0.50 | $3.00 | 262K | +0% |
| Seed 2.0 Pro (260328)ByteDance Seed | $0.917 | $0.50 | $3.00 | 262K | +0% |
| Nano Banana 2Google | $0.917 | $0.50 | $3.00 | 131K | +0% |
| Gemini 3 FlashGoogle | $0.917 | $0.50 | $3.00 | 1.05M | +0% |
| Gemini 3 Flash PreviewGoogle | $0.917 | $0.50 | $3.00 | 1.05M | +0% |
| Gemini Flash LatestGoogle | $0.917 | $0.50 | $3.00 | 1.05M | +0% |
Heads up: prices are indicative list rates scraped from provider pricing pages; verify with the provider before relying on them. Report incorrect data for this model