OpenAI · Frontier
GPT-5.6 Sol
The top tier of OpenAI's GPT-5.6 family and the most expensive model on their price card. Positioned for the hardest reasoning and agentic work.
What that means
A worked example
Per-token pricing is hard to feel. Take a moderately chatty production workload: 100 calls a day, roughly 10,000 tokens in and 2,000 out each time. On GPT-5.6 Sol that comes to about:
$330 / month
Before caching, batching or volume discounts, all of which move this number a long way. Illustrative only.
Strong at
- -Reasoning
- -Coding
- -Agentic tasks
Typical use
- -Complex agents
- -Hard reasoning problems
Watch out for
- -Long-context pricing applies above roughly 270K input tokens
Same tier
What else to look at
| Model | Developer | Context | In / 1M | Out / 1M |
|---|---|---|---|---|
| Claude Fable 5 | Anthropic | 1M | $10 | $50 |
| Claude Opus 5 | Anthropic | 1M | $5 | $25 |
| Claude Opus 4.8 | Anthropic | 1M | $5 | $25 |
| GPT-5.5 | OpenAI | 1M | $5 | $30 |
| Gemini 3.1 Pro | 2M | $2 | $12 |
Verified 2026-08-07.