Model error diagnosis

Meta: Llama 4 Scout | model capability unsupported

Meta: Llama 4 Scout returning 400 / model capability unsupported means you should first confirm whether model ID meta-llama/llama-4-scout is visible for this Meta key, then separate permission, context, capability, rate limit, or route issues.

Model

meta-llama/llama-4-scout

Meta: Llama 4 Scout

Provider

What this model error usually means

Meta: Llama 4 Scout returning 400 / model capability unsupported means you should first confirm whether model ID meta-llama/llama-4-scout is visible for this Meta key, then separate permission, context, capability, rate limit, or route issues.

Model: meta-llama/llama-4-scout
Provider: Meta
Status code: 400

How to prove it during checking

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

List models: confirm whether meta-llama/llama-4-scout is actually visible instead of guessing from the display name.
Light probe: use minimal input to verify whether Meta returns the same 400, then record the error body.
Compare model facts: context 327,680, input $0.080, output $0.300.
supports frequency_penalty
supports max_tokens
supports min_p
supports presence_penalty

Next action

Meta: Llama 4 Scout 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: 327,680
Price: $0.080 / $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

Meta: Llama 4 Scout

Open providers