GPT-6.1 Sol Pro: API price, context window and how to connect
GPT-6.1 Sol Pro by OpenAI: $2 per million input tokens, $10 per million output tokens, a 1.05M-token window. What it is good for, what to compare it with and how to connect it in SKILLOK.
In this article
In short#
The same GPT-6.1 Sol in the pro reasoning mode: it thinks longer and answers more precisely on hard tasks. The mode spends noticeably more tokens, so the real bill is higher than plain Sol at the same price per token.
Specifications#
| Provider | OpenAI |
| Released | 2026-09-29 |
| Context window | 1.05M tokens |
| Accepts | files, images, text |
| Answers with | text |
| Reasoning mode | yes |
| Tool calling | yes |
| Open weights | no |
| Identifier | openai/gpt-6.1-sol-pro |
Price#
| Per 1M tokens | In dollars |
|---|---|
| Input (question, context) | $2 |
| Output (answer) | $10 |
For reference: a conversation of 20 questions of ~500 tokens and answers of ~800 tokens costs about $0.18. Models in reasoning mode spend more tokens on an answer than the text shows: the reasoning is paid for too.
What it is good for#
- Hard tasks where a mistake costs more than time
- Hard math and code analysis
- One-off deep answers rather than a stream of requests
Similar models#
Catalog models with the same kind of output, closest in the price of a typical request.
| Model | Input | Output | Window | Price |
|---|---|---|---|---|
| GPT-6.1 Sol | $2 | $10 | 1.05M | about the same |
| Claude Sonnet 5.5 | $2 | $10 | 1M | about the same |
| Gemini 4 Argon | $2 | $10 | 1.05M | about the same |
| GLM 5.3 Prime | $2.8 | $8.8 | 1M | about the same |
| Kimi K3 | $0.239 | $11.936 | 1.05M | about the same |
Other OpenAI models#
How to connect in SKILLOK#
GPT-6.1 Sol Pro works through OpenRouter: add an OpenRouter key in Settings → AI and pick the openai/gpt-6.1-sol-pro model. It then becomes available in Space AI, in tasks and to the repository agent. In detail — Connecting a model in SKILLOK.
Where the data comes from#
Prices, the context window and capabilities come from the public OpenRouter catalog as of 2026-10-19. A provider may change the price — the exact figure is always on the model's OpenRouter page.
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