haiku-5.5
Public AI IQ model profile with source-backed benchmark results and derived ranking context.
haiku-5.5 API pricing — full price table, workload cost examples, and cheaper alternatives.
Release and Capabilities
| Public release | 2026-10-07 |
|---|---|
| Modalities | text, image |
| Context window | 1,000,000 tokens |
Available through the Claude API as claude-haiku-5-5 and on Amazon Web Services, Google Cloud and Microsoft Azure.
Publisher-reported capabilities
- Adaptive thinking with adjustable effort for high-volume and latency-sensitive work.
- Supports a 1M-token context window and 128K output tokens.
Limitations and availability caveats
- Higher pricing applies to prompts over 100,000 tokens; listed token prices use the lower prompt-length tier.
- Biology and cybersecurity safeguards restrict some requests.
- Effort settings are configurations of one model, not separate commercial models.
Official release and model references
Measured Coverage and Estimates
Haiku 5.5 has 13 of 39 tracked IQ benchmark inputs across 5 of 7 dimensions. Raw benchmark tables contain source-backed results only. Derived IQ combines all six dimensions using the shared scoring methodology, including estimates where direct coverage is incomplete. Configured predecessor references: Haiku 4.5. A reference is an estimation input, not evidence that this model has the predecessor's measured results.
Among dimensions with direct benchmark coverage, this profile's highest estimated scores are Programmatic Reasoning (IQ 135) and Academic Reasoning (IQ 129). These dimension estimates can include statistical adjustments or predecessor priors; they are not raw benchmark percentages or claims of real-world task success.
Benchmark versions, evaluation harnesses, and coverage affect comparisons; a missing result is not a score of zero. See the scoring methodology for estimation and uncertainty limits.
IQ Dimensions
| Dimension | IQ | Coverage |
|---|---|---|
| Abstract Reasoning | 91 | 0/5 |
| Mathematical Reasoning | 125 | 1/5 |
| Academic Reasoning | 129 | 3/6 |
| Programmatic Reasoning | 135 | 3/6 |
| Computer Use | 97 | 0/5 |
| Reliability | 119 | 2/6 |
| Knowledge Work | 125 | 4/6 |
Benchmark Results
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Frequently Asked Questions
- What is the IQ of haiku-5.5?
- haiku-5.5 has an estimated IQ of 117, which ranks #47 out of 162 public models on the AI IQ leaderboard. The score combines seven equally weighted reasoning dimensions using measured benchmark results and conservative estimates for missing coverage.
- How much does haiku-5.5 cost?
- haiku-5.5 costs $0.10 per million input tokens and $0.50 per million output tokens. Adjusted for how many tokens it actually consumes on real tasks, its effective cost works out to $0.2865 per million input-plus-output tokens.
- Is haiku-5.5 open source?
- No — haiku-5.5 is a proprietary model. Its weights are not publicly available, so it is used through hosted APIs and products.
- When was haiku-5.5 released?
- haiku-5.5 was publicly released on October 7, 2026.
- How large is the context window of haiku-5.5?
- haiku-5.5 supports a context window of 1,000,000 tokens — the amount of text it can consider in a single request.
- How fast is haiku-5.5?
- In independent measurements, haiku-5.5 generates about 240 tokens per second, with a typical response time of about 297 seconds.