Anthropic
Claude Fable 5 (Adaptive Reasoning, Max Effort, Opus 4.8 Fallback)
Claude Fable 5 is a Mythos-class model from Anthropic, built for autonomous knowledge work and coding. It supports text, image, and file inputs with text output, with reasoning support and...
Introducing Claude OpusModel Snapshot
ReleaseJun 9, 2026
Context1,000,000
Overall
Rank #1 across 566
59.9
Coding
Rank #5 across 222
76.5
Blended Price
Rank #360 across 371
$20.00/M
Strength Profile
Percentile score by analysis domain.
* Cost is inverted: lower input, output, and blended prices rank higher.
Benchmark Percentiles
Higher bars mean stronger relative placement.
Model Details
Runtime
Output Speed69.4 tok/s
First Token83.88s
Max Output128,000
Pricing
Blended$20.00/M
Input$10.00/M
All Benchmarks
| Metric | Domain | Value | Rank |
|---|---|---|---|
| Artificial Analysis Intelligence Index | overall | 59.9 | #1 |
| Artificial Analysis Coding Index | coding | 76.5 | #5 |
| LiveBench Mathematics | math | 96.0% | #2 |
| GPQA | reasoning | 92.6% | #11 |