Small and fast models with the largest context window
Rule: Sorted by context window from the maker's docs, largest first, then by max output. This ranks one published spec. It is not a quality test.
| # | Name | Context window |
|---|---|---|
| 1 |  GPT-6 LunaOpenAI | 1,050,000 tokens |
| 2 | GPT-6.1 TerraOpenAI | 1,050,000 tokens |
| 3 |  Gemini 3 Flash PreviewGoogle | 1,048,576 input tokens |
| 4 | Gemini 3.1 Flash-LiteGoogle | 1,048,576 input tokens |
| 5 | Gemini 3.5 Flash-LiteGoogle | 1,048,576 input tokens |
| 6 |  DeepSeek V4.1 FlashDeepSeek | 1M tokens |
| 7 |  Claude Haiku 5.5Anthropic | 1M tokens |
| 8 | GLM-5.3-FlashZ.ai | 1M tokens |
| 9 | GLM-5.3-FlashXZ.ai | 1M tokens |
| 10 | MiniMax M3.1 FlashMiniMax | 1M tokens |
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Questions
Which small and fast model has the largest context window
GPT-6 Luna, 1,050,000 tokens, per developers.openai.com.