Compare models
Pick up to 4. Every model here is free in free-pi.
| Attribute | Kimi K3.1 Pro | Particle | Claude Haiku 5.5 | Muse Spark Open (Meta) |
|---|---|---|---|---|
| Maker | MoonshotAI | — | Anthropic | Meta |
| Usage in free-pi | daily limit · ~41x usage | 🔥 Free Unlimited: limited time | ~2.0x usage | premium, uses allowance fast · ~25x usage |
| Intelligence index | 46.5 (best) | — | 36.5 | 24.9 |
| Coding index | — | — | — | — |
| Context window | 1,048,576 tokens (best) | — | 1,000,000 tokens | 1,048,576 tokens (best) |
| Max output | 943,718 tokens (best) | — | 128,000 tokens | 943,718 tokens (best) |
| Inputs | Text, image, video | — | Text, image, file | Text, image, file, audio, video (best) |
| Tool calling | Yes | — | Yes | Yes |
| Reasoning effort | Yes | — | Yes | Yes |
| Structured output | Yes | — | Yes | Yes |
| Released | Oct 23, 2026 | — | Oct 7, 2026 | Oct 15, 2026 |
| Model page | Model page | 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.