Unknown · 5× · naposledy 25. 7. 2026
24
Momentum
Fable (officially "Claude Fable 5") is Anthropic's first generally available model of the new "Mythos" class, positioned above Opus 4.8. It is designed for Frontier-Reasoning, long-running agentic tasks, coding, knowledge work, and vision, and is offered via the Claude API as well as AWS, Google Cloud, and Microsoft Foundry. The model features a 1-million-Token context window as standard, up to 128k output Tokens per request, and achieves top performance on SWE-Bench Pro among tested Frontier models. Additional safety classifiers can decline certain requests or route them to Opus 4.8.
Vývoj momenta
26.04.25.07.
Vlastnosti
| Key Benchmark (%) | SWE-Bench Pro: 80.3%; SWE-bench Verified: 95.5% |
| Context Window (Tokens) | 1,000,000 tokens (default), up to 128,000 output tokens per request |
| License | Proprietary, closed model (not open-weight) |
| Multimodality | Text, image, and file input (vision), text output, tool use, up to 600 images/PDF pages per request |
| Platform | Claude API, Amazon Bedrock, Claude Platform on AWS, Google Cloud, Microsoft Foundry |
| Price per 1M Tokens | $10 input / $50 output (cache hit $1, Batch API $5/$25) |
| Release Date | June 9, 2026 (temporarily suspended June 12, restored globally July 1, 2026) |