OpenAI: GPT-5.6 Sol
Analysis Summary
OpenAI's GPT-5.6 Sol is a high-capability model for reasoning, software work, and tool-driven tasks. Its supplied intelligence and coding results are strong, and its agentic result complements them. Vision, function calling, and a 1.05M-token context extend its usefulness to multimodal analysis, long documents, and large codebases.
For client workflows, Sol is a strong candidate for complex coding assistance, agentic processes, and work where a single model must handle both text and images. The listed price, $2 per million input tokens and $10 per million output tokens, makes it a premium choice rather than a default for bulk content. Adopt it where reasoning depth and context capacity can reduce manual work, and route routine calls to a lower-cost model. Validate tool execution against the team's production integrations.
Assessed September 23, 2026
Editorial notes
GPT-5.6 Sol combines excellent reasoning and coding with strong agentic capability, vision, tool calling, and a 1M-token context; premium pricing favors high-value workflows.
The DFO score ranks models on the Artificial Analysis Intelligence Index and is refreshed as new models launch. The write-up and verdict are our own. Feedback?
DFO Verdict
GPT-5.6 Sol combines excellent reasoning and coding with strong agentic capability, vision, tool calling, and a 1M-token context; premium pricing favors high-value workflows.
Benchmarks
Artificial Analysis data refreshed Nov 7, 2026. Arena ratings from the Oct 28, 2026 text leaderboard, with style control.
Artificial Analysis no longer lists this model, so its indexes are converted from their older scale to stay comparable.
How OpenAI: GPT-5.6 Sol compares
OpenAI: GPT-5.6 Sol ranks #24 of 447 AI models we track for overall intelligence, #18 of 199 for coding, #23 of 181 for agentic tasks. Its 1.1M-token context window is larger than 98% of the models we list. At $4.00 per million input tokens it is cheaper than 6% of comparable models.
Dark bar = input · light bar = output, scaled to the priciest peer.
1M tokens ≈ 8 full-length novels or ~2,500 pages of business documents in a single request.
Pricing
| Token Type | Cost per 1M tokens | Cost per 1K tokens |
|---|---|---|
| Input | $4.00 | $0.004000 |
| Output | $20.00 | $0.020000 |
What would OpenAI: GPT-5.6 Sol cost your business?
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A website chatbot handling around 100 customer conversations a day, a few short messages each.
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These numbers get smaller with the right architecture.
We route routine calls to cheap models and save OpenAI: GPT-5.6 Sol for the hard ones. Most clients cut their estimate by 60-80%.
Talk to our teamAbout OpenAI: GPT-5.6 Sol
GPT-5.6 Sol is the flagship model in OpenAI's GPT-5.6 series. It is suited for complex reasoning, coding, and agentic workflows, and is particularly strong at command-line and multi-step coding tasks..
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Frequently asked questions about OpenAI: GPT-5.6 Sol
How much does OpenAI: GPT-5.6 Sol cost?
OpenAI: GPT-5.6 Sol costs $4.00 per million input tokens and $20.00 per million output tokens.
What is the context window of OpenAI: GPT-5.6 Sol?
OpenAI: GPT-5.6 Sol has a context window of 1,050,000 tokens (1.1M).
Is OpenAI: GPT-5.6 Sol good for coding?
On our coding benchmark index, OpenAI: GPT-5.6 Sol ranks #18 of 199 models, placing it in the top quartile of the field for code generation and debugging.
What can OpenAI: GPT-5.6 Sol do?
OpenAI: GPT-5.6 Sol supports image/vision input, tool use, and function calling.
Who created OpenAI: GPT-5.6 Sol?
OpenAI: GPT-5.6 Sol is developed by OpenAI and was released on July 9, 2026.