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Codestral 25 is Mistral's dedicated coding model. Small, fast, and cheap enough to run as an inline autocomplete.
Codestral 25 supports fill-in-the-middle (FIM) out of the box and is priced to run on every keystroke of a paying developer. That is a different class of tool than a chat assistant.
| Feature | Codestral 25 | Claude Sonnet 4.6 |
|---|---|---|
| FIM support | Native | Workaround |
| Latency per completion | <500ms | 1-2s |
| Cost per M tokens | Very low | Moderate |
| Best fit | Inline completion | Chat + agent |
resp = client.fim.complete(
model="codestral-latest",
prompt="def parse_csv(path):\n ",
suffix="\n return rows",
)FIM endpoint takes a prefix and suffix; the model fills the gap.Codestral 25 excels at completions; it underperforms chat-tier models on multi-step refactors and natural-language explanations. Use it for inline suggestions and route chat to Sonnet or GPT-5.
15 questions · take it digitally for instant feedback at tendril.neural-forge.io/learn/quiz/end-modelx-codestral-25-builders
What is the primary use case that Codestral 25 was designed for?
What does FIM stand for in the context of code completion models?
Which characteristic allows Codestral 25 to run on every keystroke of a developer?
What hardware requirement is mentioned as an advantage of Codestral 25's size?
How many programming languages does Codestral 25 claim to support at usable quality?
What is the approximate latency per completion for Codestral 25 according to the comparison table?
Which of these is listed as a key term in the lesson?
What type of tasks does Codestral 25 underperform on compared to chat-tier models?
Which IDE integrations ship with Codestral 25 as an option?
What deployment options are available for Codestral 25?
In the comparison table, what is noted about Claude Sonnet 4.6's FIM support?
What is described as the 'different class of tool' compared to a chat assistant?
What specific capability does the lesson say Codestral 25 excels at?
What does the lesson suggest about verifying product details since this model was reviewed?
Based on the latency comparison, which model would be more suitable for a real-time code completion feature?