Claude Fable 5 vs Claude Opus 4.6
| Benchmark | Fable 5 | Opus 4.6 |
|---|---|---|
| MMMU-Pro (vision) | — | 72.5 |
| Arena Document · overall | 1,496.1 | 1,507.3 |
| Arena Vision · overall | 1,324.9 · high | 1,315.7 |
| Chartography | 34.8 | — |
| GDP.pdf · AA all-pass | 24 | — |
Specs
| Spec | Fable 5 | Opus 4.6 |
|---|---|---|
| Input, per 1M | $10 | $5 |
| Output, per 1M | $50 | $25 |
| Cost per task? | $8.75 | — |
| Speed, tok/s | 67 | 43 |
| Context | 1M | 1M |
| Weights | Closed | Closed |
| Released | Jun 2026 | Feb 2026 |
| See images | ✓ | ✓ |
| Read PDFs | Partial | Partial |
| Hear audio | — | — |
| Watch video | — | — |
| Call tools | ✓ | ✓ |
| Force a tool call | Partial | Partial |
| Return strict JSON | ✓ | ✓ |
| Search the web | ? | ? |
| Run code | ? | ? |
| Use a computer | ? | ? |
What breaks when you switch
Fable 5 → Opus 4.6
Nothing known.
Opus 4.6 → Fable 5
Nothing known.