Workhorse 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-5.6 TerraOpenAI | 1,050,000 tokens | ||
| 2 | GPT-6 SolOpenAI | 1,050,000 tokens | ||
| 3 | GPT-6.1 SolOpenAI | 1,050,000 tokens | ||
| 4 |  Gemini 3.1 Pro PreviewGoogle | 1,048,576 input tokens | ||
| 5 | Gemini 3.6 FlashGoogle | 1,048,576 input tokens | ||
| 6 | Gemini 3.8 FlashGoogle | 1,048,576 input tokens | ||
| 7 |  DeepSeek V4 ProDeepSeek | 1M tokens | ||
| 8 |  Claude Sonnet 5.5Anthropic | 1M tokens | ||
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| 9 |  Grok 4.3xAI | 1,000,000 tokens | ||
| 10 | MiniMax M3MiniMax | 1M tokens | ||
| 11 |  Mistral LargeMistral | 1M tokens | ||
| 12 | Grok Build 0.1xAI | 256,000 tokens | ||
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Questions
Which workhorse model has the largest context window
GPT-5.6 Terra, 1,050,000 tokens, per developers.openai.com.