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Pick up to 4. Every model here is free in free-pi.
DeepSeek V4.1 Flash GLM 4.7 Flash Heretic GPT-6.1 Terra Flex
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| Attribute | DeepSeek V4.1 Flash | GLM 4.7 Flash Heretic | GPT-6.1 Terra Flex |
|---|---|---|---|
| Maker | DeepSeek | — | OpenAI |
| Usage in free-pi | ~3.0x usage | ~20x usage | slower · ~20x usage |
| Intelligence index | 28.5 | — | 51 (best) |
| Coding index | — | — | — |
| Context window | 1,048,576 tokens | — | 1,050,000 tokens (best) |
| Max output | 393,216 tokens (best) | — | 128,000 tokens |
| Inputs | Text, image | — | Text, image, file (best) |
| Tool calling | Yes | — | Yes |
| Reasoning effort | Yes | — | Yes |
| Structured output | Yes | — | Yes |
| Released | Oct 17, 2026 | — | Oct 26, 2026 |
| 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.