Model Details
Where is GPT-5.6 Sol a perfect fit?
- Complex software engineering, coding, debugging, and repository-scale work
- Deep research and scientific problem-solving
- Long-context analysis of large documents, codebases, and datasets
- Agentic workflows requiring extended reasoning and multiple tool calls
- Computer-use and professional knowledge-work automation
- Complex tasks requiring web search, file search, code execution, or MCP tools
- Cybersecurity analysis and other demanding technical workflows
Quick Model Estimate
Your GPT-5.6 Sol Cost Estimate
💰 Total Cost
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for 1000 input + 1000 output tokens
Cost Breakdown
Prices are watched for changes and checked against the provider's own page.
Pricing
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Context Size
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 OpenAI | Text | Standard | $4.0000 | $20.0000 | $0.4000 | $5.0000 | Up to 272,000 tokens | → |
| OpenAI | Text | Standard | $8.0000 | $30.0000 | $0.8000 | $10.0000 | 272,000+ tokens | → |
| OpenAI | Text | Batch | $2.0000 | $10.0000 | $0.2000 | $2.5000 | Up to 272,000 tokens | → |
| OpenAI | Text | Batch | $4.0000 | $15.0000 | $0.4000 | $5.0000 | 272,000+ tokens | → |
| OpenAI | Text | Flex | $2.0000 | $10.0000 | $0.2000 | $2.5000 | Up to 272,000 tokens | → |
| OpenAI | Text | Flex | $4.0000 | $15.0000 | $0.4000 | $5.0000 | 272,000+ tokens | → |
| OpenAI | Text | Priority | $8.0000 | $40.0000 | $0.8000 | $10.0000 | Up to 272,000 tokens | → |
| OpenAI | Text | Priority | $16.0000 | $60.0000 | $1.6000 | $20.0000 | 272,000+ tokens | → |
 Perplexity | Text | Standard | $4.0000 | $20.0000 | $0.4000 | N/A | Up to 272,000 tokens | → |
| Perplexity | Text | Standard | $8.0000 | $30.0000 | $0.8000 | N/A | 272,000+ tokens | → |
Price changes
Every recorded change to GPT-5.6 Sol’s price, most recent first. Changes across all models are on the changes page.
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Perplexity cut the price of GPT-5.6 Sol, effective 28 September 2026.
Input $5.00 → $4.00 per 1M tokens (-20%), and 2 other price fields. 2 configurations changed.
Per-configuration detail on Perplexity → -
OpenAI cut the price of GPT-5.6 Sol, effective 23 August 2026.
Input $5.00 → $4.00 per 1M tokens (-20%), and 3 other price fields. 8 configurations changed.
Per-configuration detail on OpenAI →
Benchmarks
Scores from standardized evaluations by Artificial Analysis and Design Arena. Higher is better — the indices summarize overall ability, while the detailed scores break down performance on individual benchmarks.
Artificial Analysis
Higher is better · benchmarked by Artificial AnalysisGraduate-level questions in biology, chemistry & physics
Expert-level questions across many academic domains
Precise following of detailed instructions
Tool-using agent tasks in a telecom support setting
Unpublished physics research reasoning problems
Long-context reasoning across large inputs
Research-level scientific coding tasks
Complex command-line and terminal workflows
Economically valuable, real-world knowledge work
Breadth of factual knowledge across domains
How reliably the model avoids fabricated answers
| Variant | GPQA Diamond | Humanity's Last Exam | IFBench | τ²-Bench Telecom | AA-LCR | SciCode | Terminal-Bench Hard | CritPt | GDPval | Omniscience Accuracy | Omniscience Non-Hallucination |
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| GPT-5.6 Sol (Max) | 94.1% | 49.5% | 72.7% | 85.1% | 84% | 57.1% | 65.9% | 32.3% | 55.5% | 59.4% | 7.8% |
| GPT-5.6 Sol (Xhigh) | 93.1% | 47.3% | 71% | 84.8% | 82.3% | 57.1% | 61.4% | 28.6% | 53.4% | 58.8% | 8.1% |
| GPT-5.6 Sol (High) | 92.8% | 46% | 69.2% | 83.3% | 81.7% | 57.8% | 62.1% | 25.7% | 50.2% | 58.4% | 8.8% |
| GPT-5.6 Sol (Medium) | 92.6% | 42.2% | 69.6% | 81% | 80.3% | 57.4% | 62.9% | 22.9% | 46.1% | 57.8% | 9.2% |
| GPT-5.6 Sol (Low) | 89.8% | 39.4% | 66.5% | 76% | 78% | 56.4% | 60.6% | 14.9% | 40.2% | 57.2% | 10.6% |
| GPT-5.6 Sol (Non-reasoning) | 79% | 16.7% | — | — | 62.3% | 47.7% | — | 5.1% | 37.1% | 48.7% | 7.2% |
Compare GPT-5.6 Sol with
Two models side by side: worked costs, every rate, and every benchmark figure both of them report.
Other Models in the GPT-5.6 Family
FAQs about GPT-5.6 Sol
How much does GPT-5.6 Sol cost per 1M tokens?
GPT-5.6 Sol costs between $2.00 and $16.00 per million input tokens, and between $10.00 and $60.00 per million output tokens. The range covers Standard, Batch, Flex and Priority pricing.
What does a typical workload cost with GPT-5.6 Sol?
1,000 requests of 2,000 input and 500 output tokens each — 2,000,000 input and 500,000 output tokens in total — costs $9.00 with GPT-5.6 Sol at its lowest rates. Use the calculator on this page for your own volumes.
Has GPT-5.6 Sol's price changed?
Yes, on 2 occasions. Most recently Perplexity cut it on 28 September 2026, from $5.00 to $4.00 per million input tokens.
Which provider is cheapest for GPT-5.6 Sol?
OpenAI has the lowest input rate for GPT-5.6 Sol, at $2.00 per million tokens. Across all providers: OpenAI from $2.00 and Perplexity from $4.00 per million input tokens.
Is there cheaper GPT-5.6 Sol pricing than the standard rate?
Yes. Batch pricing for GPT-5.6 Sol starts at $2.00 per million input tokens against $4.00 on the standard tier, about 50% lower.
What is GPT-5.6 Sol's context window?
GPT-5.6 Sol has a context window of 1,050,000 tokens, and returns up to 128,000 tokens in a single response.
What input types does GPT-5.6 Sol support?
GPT-5.6 Sol accepts text, image and file input, and returns text.
What is GPT-5.6 Sol's knowledge cutoff?
GPT-5.6 Sol's training data runs to 16 February 2026. It has no built-in knowledge of events after that date.