Claude Haiku 5.5
Anthropic · Fast & cheap · Oct 7, 2026New
The smallest and fastest current Claude, priced for high-volume and sub-agent work.
- Artificial Analysis Intelligence Index
- 43.4#13 of 29 · max effort
- API price per 1M tokens
- $0.10 / $0.50input / output · $0.20 blended
- Context window
- 1Mup to 128K output tokens
- Output speed
- 242 t/s7m 12s to first answer at max effort
Benchmark results
Each row shows this model (blue) against every other model in the catalogue (grey), worst on the left, best on the right.
Overall capability
- Artificial Analysis Intelligence Index43.4#13 of 29
Max effort
- LiveBench72.1%#17 of 23
Xhigh effort
Coding
- Terminal-Bench 4.039.2%† (reported by the lab)#7 of 13
Reported by Anthropic in its launch post; no independent run yet
Agents & professional work
- GDPval-AA1,620#11 of 18
Max effort
Reported by the model’s own lab and not independently reproduced. Unmarked scores come from the benchmark’s maintainer or a third-party evaluator.
Reasoning effort trade-offs
The same model at different thinking budgets. More effort buys a higher intelligence score at a higher cost per task and a longer wait. Measured by Artificial Analysis.
| Effort | Score | Cost / task | First answer | Speed |
|---|---|---|---|---|
| Low | 29.4 | $0.025 | 9.9s | 178 t/s |
| Medium | 34.5 | $0.047 | 13s | 137 t/s |
| High | 37.8 | $0.079 | 28s | 160 t/s |
| Xhigh | 41.3 | $0.12 | 87s | 187 t/s |
| Max (headline score) | 43.4 | $0.21 | 7m 12s | 242 t/s |
Specs & pricing
- Developer
- Anthropic
- Released
- Oct 7, 2026
- Availability
- Generally available
- API model ID
claude-haiku-5-5- Weights
- Proprietary (API only)
- Reasoning
- Adjustable effort
- Knowledge cutoff
- Jun 2026
- Accepts
- Text, Image
- Produces
- Text
- Context window
- 1,000,000 tokens
- Max output
- 128,000 tokens
- Input price
- $0.10 / 1M tokens
- Output price
- $0.50 / 1M tokens
- Cached input
- $0.01 / 1M tokens
List price applies to prompts up to 100K tokens; longer prompts are billed at $0.50 input / $2.50 output per 1M tokens.
Closest alternatives
Models from other labs nearest to Claude Haiku 5.5 on Artificial Analysis Intelligence Index.
Kimi K3
Moonshot AI
Intelligence 43.6 · $3 / $15
Compare side by sideGLM-5.3
Z.ai
Intelligence 44.8 · $1.40 / $4.40
Compare side by sideGLM-5.3-Flash
Z.ai
Intelligence 41.8 · $0.15 / $0.50
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