Model comparison
Claude Haiku 4.5 vs o3
Anthropic
Claude Haiku 4.5
Fast, cheap, surprisingly capable for high-volume jobs.
OpenAI
o3
OpenAI's mainstream reasoning model - production-viable thinking.
Specs
| Metric | Claude Haiku 4.5 | o3 |
|---|---|---|
| Context window | 200K tokens↑ | 200K tokens |
| Input $/1M tokens | $1.00↑ | $2.00 |
| Output $/1M tokens | $5.00↑ | $8.00 |
| Modalities | Text · Image · File | Image · Text · File |
| Open weights | No | No |
| Released | Oct 2025 | - |
Capability differences
| Capability | Claude Haiku 4.5 | o3 |
|---|---|---|
| Vision | Yes | No |
| Prompt caching | Yes | No |
Key differences
- -Input pricing: Claude Haiku 4.5 at $1.00/1M vs o3 at $2.00/1M.