Model error diagnosis

Mistral: Mistral Medium 3.1 | model permission denied

Mistral: Mistral Medium 3.1 returning 403 / model permission denied means you should first confirm whether model ID mistralai/mistral-medium-3.1 is visible for this Mistral AI key, then separate permission, context, capability, rate limit, or route issues.

Model

mistralai/mistral-medium-3.1

Mistral: Mistral Medium 3.1

Provider

Mistral AI

25 models in catalog

Error type

model permission denied

permission-denied

Status code

403

global model route

Model error summary

Model

mistralai/mistral-medium-3.1

Error type

permission-denied

Status code

403

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

What this model error usually means

Mistral: Mistral Medium 3.1 returning 403 / model permission denied means you should first confirm whether model ID mistralai/mistral-medium-3.1 is visible for this Mistral AI key, then separate permission, context, capability, rate limit, or route issues.

Model: mistralai/mistral-medium-3.1
Provider: Mistral AI
Status code: 403

How to prove it during checking

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

List models: confirm whether mistralai/mistral-medium-3.1 is actually visible instead of guessing from the display name.
Light probe: use minimal input to verify whether Mistral AI returns the same 403, then record the error body.
Compare model facts: context 131,072, input $0.400, output $2.
supports frequency_penalty
supports max_tokens
supports presence_penalty
supports response_format

Next action

Mistral: Mistral Medium 3.1 model permission denied 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: $0.400 / $2
Read-only check. Detection data burns after 5 minutes.

Open key checker

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

Open models

Mistral: Mistral Medium 3.1

Open providers

Mistral AI