AI models / Anthropic
Claude Fable 5.1
Anthropic's model for demanding reasoning and long-horizon agentic work.
Specs and pricing
| Provider | Anthropic |
|---|---|
| API model ID | claude-fable-5-1 |
| API price (standard) | $10.00 in / $50.00 out per 1M tokens |
| Pricing note | Batch API is 50% off. |
| Context window | 1M tokens |
| Max output | 128K tokens |
| Weights | Closed (API only) |
| Knowledge cutoff | Jun 2026 |
| Retirement | Not sooner than Sep 1, 2027 |
Source: Claude models overview (checked 2026-10-15). Prices change often, so confirm on the provider's page before you commit.
Official pageCompare Claude Fable 5.1
Other Anthropic models
Anthropic
Claude Opus 5.5
Anthropic's recommended starting model, for long-running agentic coding and knowledge work.
$4.00 in / $20.00 out per 1M tokens
Context: 1M tokens
Anthropic
Claude Sonnet 5.5
Anthropic's balance of speed and intelligence.
$2.00 in / $10.00 out per 1M tokens
Context: 1M tokens
Anthropic
Claude Haiku 5.5
Anthropic's fastest model, for high-volume, latency-sensitive tasks.
from $0.10 in / from $0.50 out per 1M tokens
Context: 1M tokens