AI models / Anthropic
Claude Sonnet 5.5
Anthropic's balance of speed and intelligence.
Specs and pricing
| Provider | Anthropic |
|---|---|
| API model ID | claude-sonnet-5-5 |
| API price (standard) | $2.00 in / $10.00 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 28, 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 Sonnet 5.5
Other Anthropic models
Anthropic
Claude Fable 5.1
Anthropic's model for demanding reasoning and long-horizon agentic work.
$10.00 in / $50.00 out per 1M tokens
Context: 1M tokens
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 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