# OpenAI: GPT-6.1 Sol Pro

Provider: openai  
Category: llm  
Model ID: `openai/gpt-6.1-sol-pro`

GPT-6.1 Sol Pro is the same underlying model as [GPT-6.1 Sol](https://openrouter.ai/openai/gpt-6.1-sol), served with `reasoning.mode` set to `pro` for higher-quality responses on complex tasks. **Cost note:** pro mode spends far more...

## Specs

- Context length: 1050000 tokens
- Max output: 128000 tokens
- Modalities: file, image, text
- Released: 2026-09-29

## Pricing

- Input: $2.00 per million tokens
- Output: $10.00 per million tokens

## Providers

- **openai** — ctx 1050000, input $2.00/M, output $10.00/M

## Verdict

GPT-6.1 Sol Pro delivers OpenAI's largest context window yet at 1.05M tokens, making it the go-to for processing entire codebases, legal document sets, or multi-hour transcripts in a single pass. The $2/$10 per Mtok pricing sits between o1 and GPT-4o, positioning it as a premium option when context depth matters more than speed. Reach for this when you need to reason across massive documents without chunking; accept that you're paying for capacity you may not always use.

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Last verified: 2026-10-19T02:30:34.239Z  
Canonical URL: https://switchy.build/directory/models/gpt-6-1-sol-pro