GPT-6 Sol (Fast)

GPT-6 Sol is OpenAI's reasoning model for complex coding and agentic workflows. It accepts text and images, generates text, and supports a 1,050,000-token context window with up to 128,000 output tokens. Configurable reasoning effort, structured outputs, prompt caching, and Responses API tools make it suited to software development and multi-step automation.

Model overview

Model ID: openai/gpt-6-sol-fast
Provider: openai
Type: language
Context window: 1,050,000 tokens
Max output tokens: 128,000

Tags: explicit-caching, file-input, implicit-caching, reasoning, structured-output, tool-use, vision, web-search, fast

Model pricing

Metric	Value
`Input tokens (/1M)`	`$4.00`
`Output tokens (/1M)`	`$20.00`
`Image generation`	`n/a`
`Cached input read (/1M)`	`$0.40`
`Cached input write (/1M)`	`$5.00`
`Pricing source`	`gateway`

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