Side-by-side comparison of pricing, context window, benchmarks, capabilities, and license. Data sourced from the Interestana AI Index, kept current as developers update their models.
Model A — Anthropic
Claude 4.5 Haiku is Anthropic’s fastest and cheapest production model, targeting real-time use cases without sacrificing instruction-following quality.
Model B — OpenAI
o3 is OpenAI’s flagship reasoning model, scaling deliberate test-time compute to solve novel mathematics and science problems that earlier LLMs could not.
| Property | Claude 4.5 Haiku | OpenAI o3 |
|---|---|---|
| Released | Mar 4, 2026 | Jan 31, 2026 |
| Developer | Anthropic | OpenAI |
| Type | multimodal | reasoning |
| License | proprietary | proprietary |
| Context window | 200,000 | 200,000 |
| Parameters | — | undisclosed |
| Input $/M tokens | $0.80 | $15.00 |
| Output $/M tokens | $4.00 | $60.00 |
Bold green values indicate the winner on that dimension where comparison is meaningful (lower price wins; bigger context wins; more open license wins; newer date wins).
No shared capabilities
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