Claude Fable 5
New global #1 — 80.3% SWE-Bench Pro, the most capable model generally available.
- Input cost / 1M tokens
- $10.00/1M
- Output cost / 1M tokens
- $50.00/1M
- Context window✓ best
- 1M tokens
- Speed
- Deliberate
- Price tier
- Premium
The strongest coding and reasoning model you can actually use today. 80.3% SWE-Bench Pro is an 11-point leap over Opus 4.8 — the biggest single-release jump of 2026. It costs 2× Opus 4.8, so use it for the hardest agentic and engineering work and keep Opus 4.8 or Sonnet for everyday volume.