Model error diagnosis

Anthropic: Claude Opus 4 | model permission denied

Anthropic: Claude Opus 4 returning 403 / model permission denied means you should first confirm whether model ID anthropic/claude-opus-4 is visible for this Anthropic key, then separate permission, context, capability, rate limit, or route issues.

Model

anthropic/claude-opus-4

Anthropic: Claude Opus 4

Provider

Anthropic

13 models in catalog

Error type

model permission denied

permission-denied

Status code

403

global model route

Model error summary

Model

anthropic/claude-opus-4

Error type

permission-denied

Status code

403

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

What this model error usually means

Anthropic: Claude Opus 4 returning 403 / model permission denied means you should first confirm whether model ID anthropic/claude-opus-4 is visible for this Anthropic key, then separate permission, context, capability, rate limit, or route issues.

Model: anthropic/claude-opus-4
Provider: Anthropic
Status code: 403

How to prove it during checking

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

List models: confirm whether anthropic/claude-opus-4 is actually visible instead of guessing from the display name.
Light probe: use minimal input to verify whether Anthropic returns the same 403, then record the error body.
Compare model facts: context 200,000, input $15, output $75.
supports include_reasoning
supports max_tokens
supports reasoning
supports stop

Next action

Anthropic: Claude Opus 4 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: 200,000
Price: $15 / $75
Read-only check. Detection data burns after 5 minutes.

Open key checker

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

Open models

Anthropic: Claude Opus 4

Open providers

Anthropic