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Pick up to 4. Every model here is free in free-pi.
Laguna S 2.1 (Poolside) GPT-6 Luna Kimi K3.1 Pro
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- DeepSeek V4 Flash
- Claude Haiku 5.5
- Claude Sonnet 5.5
- DeepSeek V4.1 Flash
- DeepSeek V4 Pro
- Defense Flash
- Defense Flash 2
- Gemini 4 Argon
- Gemini 4 Argon Flex
- GLM 5.3 Flash
- GPT-6.1 Sol
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- GPT-6 Luna Flex
- GPT-OSS 120B
- MiMo V2.6 Flash (Xiaomi)
- Muse Spark 1.3 Contributor
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- Qwen3.5 35B (Darkbloom)
- Solar Pro 4
| Laguna S 2.1 (Poolside) | GPT-6 Luna | Kimi K3.1 Pro | |
|---|---|---|---|
| Maker | Poolside | OpenAI | MoonshotAI |
| Usage in free-pi | free preview, rate-limited · free, then ~1.8x usage | ~2.0x usage | ~41x usage |
| Intelligence index | — | 38.1 | — |
| Coding index | — | — | — |
| Context window | 262,144 tokens | 1,050,000 tokens (best) | 1,048,576 tokens |
| Max output | 32,768 tokens | 128,000 tokens | 943,718 tokens (best) |
| Inputs | Text | Text, image, file (best) | Text, image, video (best) |
| Tool calling | Yes | Yes | Yes |
| Reasoning effort | No | Yes | Yes |
| Structured output | No | Yes | Yes |
| Released | Jul 21, 2026 | Sep 22, 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.