Claude Fable 5 vs Claude Opus 5
EBR Bench?
Fable 539.5
Opus 5at max45.7
| Benchmark | Fable 5 | Opus 5 |
|---|---|---|
| AutomationBench-AA | 54.1 | 54.3 |
| GDPval-AA (work tasks) 2.1 | 1,609.9 | 1,491.2 |
| τ³-bench · banking · 1.0.1 | 39.7 | 48.7 · max |
| τ³-Banking · AA | 38.1 | 38.6 |
| AA Analyst Agent | 48.8 | 53.8 · max |
| Terminal-Bench 4.0 | 42.4 | 34.3 |
| AA-Briefcase 1.1 · Elo | 1,536.9 | 1,432.7 |
| AA-LCR (long context) 1.1 | 82.3 | 82 |
| DeepSWE 1.1 | 69.7 | 68.9 |
| EnterpriseOps-Gym-AA | 51.1 | 47.5 · max |
| EBR Bench | 39.5 | 45.7 · max |
| Furniture Assembly | 35.8 | 60.8 · max |
| Terminal-Bench Hard (version unstated) | 62.9 | — |
| Terminal-Bench Science 0.1 | — | 28.6 · max |
| SWE-bench Pro (v2 full) | — | 99.4 · xhigh |
| SWE-bench Pro (v2 hard) | — | 98 · xhigh |
Specs
| Spec | Fable 5 | Opus 5 |
|---|---|---|
| Input, per 1M | $10 | $5 |
| Output, per 1M | $50 | $25 |
| Cost per task? | $8.75 | $2.19 |
| Speed, tok/s | 67 | 51 |
| Context | 1M | 1M |
| Weights | Closed | Closed |
| Released | Jun 2026 | Jul 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 5
Nothing known.
Opus 5 → Fable 5
Nothing known.