OpenAI: GPT-5.6 Sol Pro
openai/gpt-5.6-sol-pro
ReasoningToolsJSONVision
Intelligence
—
Design Elo
—
Speed
82
96th fastest
Latency
7.7s
first token
Input price
$5.00
279th cheapest
Context
1.1M
128K max out
How it compares
Faster than70%
of all ranked models
Cheaper than9%
of all ranked models
Overview
GPT-5.6 Sol Pro is the same underlying model as [GPT-5.6 Sol](https://openrouter.ai/openai/gpt-5.6-sol), served with `reasoning.mode` set to `pro` for higher-quality responses on complex tasks. Learn more in OpenAI's docs: https://developers.openai.com/api/docs/guides/reasoning#reasoning-mode
Providers & pricing (5)
| Provider | In $/M | Out $/M | Context | Uptime |
|---|---|---|---|---|
| Azure | $5.00 | $30.00 | 1.1M | 89.8% |
| OpenAI | $5.00 | $30.00 | 1.1M | 61.9% |
| OpenAI | $2.50 | $15.00 | 1.1M | 61.9% |
| OpenAI | $10.00 | $60.00 | 1.1M | 61.9% |
| Azure | $5.50 | $33.00 | 1.1M | — |
Specifications
Context window1.1M
Max output128K
Knowledge cutoffFeb 2026
Input modalitiesfile, image, text
Output modalitiestext
Prompt caching—
Cache read price$0.500/M
ModeratedNo
GPT-5.6 Sol Pro FAQ
How much does GPT-5.6 Sol Pro cost?
GPT-5.6 Sol Pro costs $5.00 per million input tokens and $30.00 per million output tokens via OpenRouter, making it 279th cheapest of 306 paid models.
How fast is GPT-5.6 Sol Pro?
GPT-5.6 Sol Pro generates around 82 tokens per second with 7.7s time-to-first-token (p50), the 96th fastest tracked model.
What is GPT-5.6 Sol Pro's context window?
GPT-5.6 Sol Pro supports a 1.1M-token context window and can output up to 128K tokens. It accepts file, image, text input.