UltraGPT
Mistral: Codestral 2508
Mistral's cutting-edge language model for coding released end of July 2025. Codestral specializes in low-latency, high-frequency tasks such as fill-in-the-middle (FIM), code correction and test generation. [Blog Post](https://mistral.ai/news/codestral-25-08)
Intelligence overview
256K tok
Context window
204.8K tok
Max output
What Mistral: Codestral 2508 can do.
Multimodal
File input
Reads uploaded files — documents, spreadsheets, code — directly in context.
Development
Tool calling
Calls external functions mid-response, then continues reasoning from the result.
Structured output
Returns responses constrained to a JSON schema, ready to parse without cleanup.
Streaming
Streams tokens as they're generated instead of waiting on the full response.
Performance
Design Arena — ranked #97 across 6 categories
Pay for what you use.
Every model in UltraGPT runs behind one flat subscription — this is the underlying per-token cost the catalog tracks.
$0.3 / 1M tok
$0.9 / 1M tok
Built for serious work.
Build
Generate and refactor code, with the ability to run and verify tool calls and return structured, parseable output.
Research
Holds up to 256K tokens of source material in context without losing the thread.
Ask Mistral: Codestral 2508 anything.
A preview of the real UltraGPT composer — the model you see here is the model you get.
Continues in the UltraGPT app — one login, every model.
How Mistral: Codestral 2508 stacks up.
The closest models in the catalog by provider, capability and score — real entries, pulled from the same directory.
Technical details.
Specification
- Context window
- 256K tokens
- Max output
- 204.8K tokens
- Input modalities
- Text + File
- Output modalities
- Text
- Knowledge cutoff
- Mar 31, 2025
- Release date
- Aug 1, 2025
- Streaming
- Supported
- Tool calling
- Supported
- JSON mode
- Supported
More from Mistral AI, and everything else.
This model is one entry in the full UltraGPT catalog — browse the rest, compare pricing and context windows, or filter by capability.