Model error diagnosis

Mistral: Devstral Small 1.1 | model capability unsupported

Mistral: Devstral Small 1.1 returning 400 / model capability unsupported means you should first confirm whether model ID mistralai/devstral-small is visible for this Mistral AI key, then separate permission, context, capability, rate limit, or route issues.

Model

mistralai/devstral-small

Mistral: Devstral Small 1.1

Provider

Mistral AI

25 models in catalog

Error type

model capability unsupported

capability-unsupported

Status code

400

global model route

Model error summary

Model

mistralai/devstral-small

Error type

capability-unsupported

Status code

400

Read-only check. Detection data burns after 5 minutes.

What this model error usually means

Mistral: Devstral Small 1.1 returning 400 / model capability unsupported means you should first confirm whether model ID mistralai/devstral-small is visible for this Mistral AI key, then separate permission, context, capability, rate limit, or route issues.

Model: mistralai/devstral-small
Provider: Mistral AI
Status code: 400

How to prove it during checking

Read-only check. Detection data burns after 5 minutes.

List models: confirm whether mistralai/devstral-small is actually visible instead of guessing from the display name.
Light probe: use minimal input to verify whether Mistral AI returns the same 400, then record the error body.
Compare model facts: context 131,072, input $0.100, output $0.300.
supports frequency_penalty
supports max_tokens
supports presence_penalty
supports response_format

Next action

Mistral: Devstral Small 1.1 model capability unsupported should not end at failed. Return the next move: change model ID, add permission, reduce context, disable unsupported capability, change route, monitor, or hold listing.

Context: 131,072
Price: $0.100 / $0.300
Read-only check. Detection data burns after 5 minutes.

Open key checker

Read-only check. Detection data burns after 5 minutes.

Open models

Mistral: Devstral Small 1.1

Open providers

Mistral AI