OpenAI · Flagship
GPT-5.6 Sol
Launched alongside GPT-5.6 Terra and GPT-5.6 Luna as a three-tier family
- Provider
- OpenAI
- Family
- GPT
- Model type
- Flagship
- Official release date
- Jul 9, 2026
- Release type
- New model
- Status
- Generally available
- Previous version
- GPT-5.5
- Input
- text, image
- Output
- text
- Context window
- 1,050,000 tokens
- Max output
- 128,000 tokens
- API model id
gpt-5.6-sol- API price (input)
- $4 per 1M tokens
- API price (output)
- $20 per 1M tokens
- Price notes
- Listed under "More models"; page mentions promotional pricing through at least 2026-11-21. Alias gpt-5.6 routes here.
- Consumer apps
- —
- Developer API
- OpenAI API
- Free access
- None documented
- Paid access
- —
- Availability
- —
- Licence
- proprietary
Main improvements
- Launched alongside GPT-5.6 Terra and GPT-5.6 Luna as a three-tier family
- Was the recommended replacement for GPT-5 and o3 snapshots
Best use cases
- Complex professional work
Benchmarks
No benchmark results recorded. We only list scores with a source, benchmark version and date.
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