Claude Haiku 5.5
Claude Haiku 5.5 is Anthropic's smallest Claude 5.5 model, built for high-volume, latency-sensitive work. It brings a 1M-token context window and adaptive effort control to the Haiku line at roughly a tenth of Haiku 4.5's per-token price.
Specifications
| Lab | Anthropic |
|---|---|
| Context window | 1M tokens |
| Input price | $0.10/1M |
| Output price | $0.50/1M |
| Release | Oct 2026 |
Strengths
- Fastest Claude model to date
- 1M-token context window, up from 200K on Haiku 4.5
- Near-Sonnet knowledge-work scores at roughly 1/20th the price
- Adjustable effort setting, a first for the Haiku line
Weaknesses
- Trails Sonnet/Opus 5.5 on deep reasoning and agentic coding
- Per-token price rises 5x past 100K tokens of context
Best for
- High-volume classification, extraction and routing
- Subagent coding alongside Opus/Sonnet 5.5
- Live support and other latency-sensitive tasks
In Depth: Claude Haiku 5.5
Summary
Claude Haiku 5.5 is an AI model from Anthropic.
Released in Oct 2026. It takes text and image input and produces text output, with a context window of 1M tokens. Input pricing is $0.10 per 1M tokens and output is $0.50 per 1M tokens on OpenRouter.