Model Release Radar
Price/capability frontier position, benchmark scores, and community signal
Model Release Radar
Claude Fable 5.1
anthropic·closed weights·Proprietary
USD per million tokens via OpenRouter, Anthropic (anthropic). Checked 2026-10-17 08:54 UTC.
| Token type | USD /1M |
|---|---|
| Input | $10 |
| Output | $50 |
| Cache read | $0.25 |
| Cache write (5 minutes) | $12.5 |
| Cache write (1 hour) | $20 |
Cache-write rates with a verified basis replace the ordinary input charge. Unknown rates are never treated as zero.
- On frontier AA coding index (blended per-1M-token price, 3:1 input/output; not a measured per-task cost) - no tracked model currently beats it on both price and capability.
- Behind frontier AA intelligence index (blended per-1M-token price, 3:1 input/output; not a measured per-task cost) - GPT-6 Astra, Claude Opus 5, Claude Opus 5.5, Muse Wonder, Gemini 4 Argon are priced the same or lower and at least as capable.
This model has not been measured on DeepSWE (or any other benchmark with a real measured per-task cost) yet, so no cost/capability chart is drawn. Its Artificial Analysis benchmark scores are listed below.
Measured cost per task (DeepSWE)
This model has not been measured on DeepSWE (or any other benchmark with a real measured per-task cost) yet.
Artificial Analysis scores
No Artificial Analysis benchmark scores are tracked for this model yet.
This page covers 5 reasoning-effort variants of the same model.
| Variant | AA coding index | AA intelligence index | Blended /1M (3:1 input/output) |
|---|---|---|---|
| Max effort (shown above) | - | - | $20/1M |
| Extra-high effort | 80.7 | 53.2 | $20/1M |
| High effort | 79.1 | 51.2 | $20/1M |
| Low effort | 75.2 | 46.8 | $20/1M |
| Medium effort | 77.1 | 48.9 | $20/1M |
| Variant | Coding Elo | Overall Elo | Votes |
|---|---|---|---|
| Max effort | 1,531 | 1,512 | 14,590 |