Last refreshed 2026-06-15. Next refresh: weekly.
Why use Claude Fable 5 on OpenRouter?
OpenRouter offers Claude Fable 5 with pay-as-you-go pricing at $10.00/1M input tokens. OpenRouter is a multi-provider LLM aggregator offering unified API access to 300+ models from all major labs and emerging providers, with automatic failover for reliability.
Compare Claude Fable 5 across 5 providers to find the best fit for your use caseSetup recipe
Docs fallbackUse the provider REST API or SDKCreate a provider API keymodel: anthropic/claude-fable-5anthropic/claude-fable-5Request example
anthropic/claude-fable-5.Gotchas
- Use provider model ID "anthropic/claude-fable-5", not the LLMReference slug "claude-fable-5".
Compare Claude Fable 5 Across Providers
| Provider | Input (per 1M) | Output (per 1M) |
|---|---|---|
| Anthropic | $10.00 | $50.00 |
| AWS Bedrock | $10.00 | $50.00 |
| GCP Vertex AI | $10.00 | $50.00 |
| Microsoft Foundry | $10.00 | $50.00 |
| OpenRouter | $10.00 | $50.00 |
Pricing
| Type | Price (per 1M) |
|---|---|
| Input tokens | $10.00 |
| Output tokens | $50.00 |
| Image input | $1.00 |
Capabilities
About Claude Fable 5
Anthropic's most capable widely released model, built for demanding reasoning and long-horizon agentic work. Claude Fable 5 is the generally available Mythos-class Claude model, supports vision, tool use, structured outputs, prompt caching, Batch API processing, adaptive thinking that is always on, a 1M-token context window, and up to 128k output tokens. It launched on the Claude API, AWS Bedrock, Vertex AI, and Microsoft Foundry on June 9, 2026 with first-party pricing at $10 per 1M input tokens and $50 per 1M output tokens, but Anthropic disabled Fable 5 access for all customers on June 12, 2026 after a US export control directive and says it is working to restore access.
FAQ
What does Claude Fable 5 cost on OpenRouter?
On OpenRouter, Claude Fable 5 costs $10 per 1M input tokens and $50 per 1M output tokens.
What is the context window for Claude Fable 5 on OpenRouter?
Claude Fable 5 supports a 1m token context window on OpenRouter.
How does OpenRouter compare to other Claude Fable 5 providers?
Claude Fable 5 is available from 5 providers. The cheapest input pricing is $10.00/1M tokens from Anthropic.
What API model ID do I use for Claude Fable 5 on OpenRouter?
Use the model ID anthropic/claude-fable-5 when calling OpenRouter's API.
Who created Claude Fable 5?
Claude Fable 5 was created by Anthropic as part of the Claude Fable model family.
Is Claude Fable 5 open source?
Claude Fable 5 is not open source; the seed data lists it as proprietary.