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Claude Haiku 5.5 GPT-6.1 Terra Flex
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| Attribute | Claude Haiku 5.5 | GPT-6.1 Terra Flex |
|---|---|---|
| Maker | Anthropic | OpenAI |
| Usage in free-pi | ~2.0x usage | slower · ~20x usage |
| Intelligence index | 36.2 | 51 (best) |
| Coding index | — | — |
| Context window | 1,000,000 tokens | 1,050,000 tokens (best) |
| Max output | 128,000 tokens (best) | 128,000 tokens (best) |
| Inputs | Text, image, file (best) | Text, image, file (best) |
| Tool calling | Yes | Yes |
| Reasoning effort | Yes | Yes |
| Structured output | Yes | Yes |
| Released | Oct 7, 2026 | Oct 26, 2026 |
| Model page | Model page | Model page |
Stats refreshed automatically. Usage rate from free-pi. Green marks the best value in each row. “—” means no figure is available.