GPT-5.6 Sol vs GPT-5 Pro
How do these models stack up? Below is an expert side-by-side comparison of specifications, context window capacity, live pricing per million tokens, and standardized benchmark scores for GPT-5.6 Sol and GPT-5 Pro.
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...
GPT-5 Pro
GPT-5 Pro is OpenAI’s most advanced model, offering major improvements in reasoning, code quality, and user experience. It is optimized for complex tasks that require step-by-step reasoning, instruction following, and...
Technical Specifications
| Specification | GPT-5.6 Sol | GPT-5 Pro |
|---|---|---|
| Provider | OpenAI | OpenAI |
| Context Window | 1,050,000 tokens | 400,000 tokens |
| Agent Suitability | N/A | N/A |
| Time to First Token (TTFT) | N/A | N/A |
| Deployment Model | managed api | managed api |
| Production Stability | beta | stable |
| API Available | Yes | Yes |
| Released Date | 2026-07-09 | 2025-10-06 |
API Pricing Comparison
Input Price per Million Tokens
GPT-5.6 Sol
$5.00
GPT-5 Pro
$15.00
Output Price per Million Tokens
GPT-5.6 Sol
$30.00
GPT-5 Pro
$120.00
Want to test both models live?
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Benchmark Performance Metrics
Scores show the raw performance percentages verified across key evaluation suites. Higher bars indicate superior accuracy and capability in that domain.
GPT-5.6 Sol Quirks & Gotchas
No developer gotchas reported.
GPT-5 Pro Quirks & Gotchas
No developer gotchas reported.