Compare verified pricing and model limits for availability and safety architecture across Anthropic's premium Claude 5 models. The cost example uses a long-context research workload and does not assume equal model quality.
Anthropic publishes the same standard token pricing and limits for Fable 5 and Mythos 5. Mythos 5 is invitation-only through Project Glasswing and does not include the safety classifiers documented for Fable 5, so the rollout decision cannot be made from cost alone.
| Decision factor | Claude Fable 5 | Claude Mythos 5 |
|---|---|---|
| Standard token price | $10 input and $50 output per million tokens | $10 input and $50 output per million tokens |
| Availability | Generally available across Anthropic and supported cloud platforms | Limited to approved Project Glasswing customers |
| Safety classifiers | Includes the classifiers and refusal handling documented by Anthropic | Does not include the Fable 5 safety classifiers |
| Tracked limits | 1M context and 128k maximum output | 1M context and 128k maximum output |
Prices are USD per 1M tokens under each model's verified default profile.
| Field | Claude Fable 5 | Claude Mythos 5 |
|---|---|---|
| Provider | Anthropic | Anthropic |
| API model ID | claude-fable-5 | claude-mythos-5 |
| Input / 1M | $10.00 | $10.00 |
| Cached input / 1M | $1.00 | $1.00 |
| Output / 1M | $50.00 | $50.00 |
| Context window | 1,000,000 tokens | 1,000,000 tokens |
| Maximum output | 128,000 tokens | 128,000 tokens |
| Accepted input | text, image | text, image |
150,000 input and 5,000 output tokens per request, 2,000 monthly requests, and 10% cached input.
Cost result: Claude Fable 5 is $0.00 lower per month for these assumptions. This is a price comparison, not a model-quality ranking.
Models whose tracked context window is below the scenario input are excluded from the compatible-model table.
Latency, reliability, output quality, retries, regional processing, and provider-specific tool charges can change the practical decision.