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Pick up to 4. Every model here is free in free-pi.
Claude Sonnet 5.5 Laguna S 2.1 (Poolside) Kimi K3.1 Pro
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| Claude Sonnet 5.5 | Laguna S 2.1 (Poolside) | Kimi K3.1 Pro | |
|---|---|---|---|
| Maker | Anthropic | Poolside | MoonshotAI |
| Usage in free-pi | premium, uses allowance fast · ~41x usage | free preview, rate-limited · free, then ~1.8x usage | ~41x usage |
| Intelligence index | 56 | — | — |
| Coding index | — | — | — |
| Context window | 1,000,000 tokens | 262,144 tokens | 1,048,576 tokens (best) |
| Max output | 128,000 tokens | 32,768 tokens | 943,718 tokens (best) |
| Inputs | Text, image, file (best) | Text | Text, image, video (best) |
| Tool calling | Yes | Yes | Yes |
| Reasoning effort | Yes | No | Yes |
| Structured output | Yes | No | Yes |
| Released | Sep 28, 2026 | Jul 21, 2026 | Oct 23, 2026 |
| Model page | Model page | Model page | Model page |
Stats from OpenRouter; refreshed automatically. Usage rate from free-pi. Green marks the best value in each row. “—” means no figure is available.