Compare models
Pick up to 4. Every model here is free in free-pi.
Muse Spark Open (Meta) Kimi K3.1 Pro Claude Sonnet 5.5
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- Solar Pro 4
| Muse Spark Open (Meta) | Kimi K3.1 Pro | Claude Sonnet 5.5 | |
|---|---|---|---|
| Maker | Meta | MoonshotAI | Anthropic |
| Usage in free-pi | premium, uses allowance fast · ~25x usage | ~41x usage | premium, uses allowance fast · ~41x usage |
| Intelligence index | — | — | 56 |
| Coding index | — | — | — |
| Context window | 1,048,576 tokens (best) | 1,048,576 tokens (best) | 1,000,000 tokens |
| Max output | 943,718 tokens (best) | 943,718 tokens (best) | 128,000 tokens |
| Inputs | Text, image, file, audio, video (best) | Text, image, video | Text, image, file |
| Tool calling | Yes | Yes | Yes |
| Reasoning effort | Yes | Yes | Yes |
| Structured output | Yes | Yes | Yes |
| Released | Oct 15, 2026 | Oct 23, 2026 | Sep 28, 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.