OpenAI: GPT-5.6 Sol
GPT-5.6 Sol from OpenAI is a powerful AI model with an extensive context length of 1,050,000 tokens and supports handling text, images, and files. It excels in both input and output reasoning, making it versatile for various tasks. However, its structured output capability remains unverified. For those looking to integrate robust AI capabilities into their projects without the need for complex structured outputs, GPT-5.6 Sol is a compelling choice. Its blended benchmark score of 99.3 across three independent benchmarks places it among the top models. Given its pricing at $5 per million input tokens and $30 per million output tokens, while not necessarily the cheapest option, it offers excellent value for those prioritizing performance and feature set.
Benchmark results
Independent, published benchmarks. Blended score 99.3 across 3 benchmarks, last refreshed 2026-08-13. How scoring works →
| Benchmark | Measures | Score |
|---|---|---|
| AI Index | broad capability composite | 100.0 |
| AI Index Coding | software engineering tasks | 100.0 |
| AI Index Agentic | multi-step tool-using tasks | 95.3 |
- Model ID
- openai/gpt-5.6-sol
- Vendor
- openai
- Released
- July 2026
- Tokenizer
- GPT
- Input Modalities
- file, image, text
- Output Modalities
- text
- Max Output
- 128,000 tokens
- Tool Calling
- ✓ supported
- Structured Output
- ✓ supported
- Reasoning Mode
- ✓ supported
- Vision
- ✓ accepts images
- Audio
- no
- Moderated
- yes
What it costs in practice
Computed from the current $5.00/M input and $30.00/M output rates. Run your own numbers →
| Job | Tokens | Cost |
|---|---|---|
| Summarize a 50-page report | 30k in / 1.5k out | $0.20 |
| Classify 1,000 customer emails | 500k in / 50k out | $4.00 |
| A month of a busy support chatbot | 5M in / 2M out | $85.00 |
Category rankings
Where OpenAI: GPT-5.6 Sol places across the 1 category it ranks in. How we rank →
| # | Category | Score |
|---|---|---|
| #25 | Browser AutomationAgents · of 25 ranked | 170 |
Similar models
OpenAI: GPT-5.6 Sol Pro
OpenAI: GPT-5.5
OpenAI: GPT-4o (batch)
OpenAI: gpt-oss-120b
OpenAI: gpt-oss-20b
OpenAI: gpt-oss-safeguard-20b
Quick answers
- How much does OpenAI: GPT-5.6 Sol cost?
- $5.00 per million input tokens and $30.00 per million output tokens.
- What is OpenAI: GPT-5.6 Sol's context window?
- 1,050,000 tokens, roughly 1,575 pages of text in a single request.
- Does OpenAI: GPT-5.6 Sol support tool calling?
- It supports tool calling, structured output, a reasoning mode.
- Can OpenAI: GPT-5.6 Sol process images?
- Yes, it accepts image input.