OpenAI · GPT-5.6
GPT-5.6 Sol Pro
The highest-capability GPT-5.6 option for difficult and longer-running work where a standard reasoning pass is not enough.
Escalate to Pro; do not default to it. The first test must show a material reduction in failure or correction effort.
Use it for
- Long-running professional workflows
- Hard problems after a standard attempt fails
- High-value work with a clear review method
Do not pay the Pro tax for a routine draft, a vague question or a process with no way to judge whether the answer improved.
Effort without the jargon
The task is difficult, valuable and measurable enough to justify the highest-capability option.
Advanced recordCost, limits, privacy and operations
Pro is an escalation path, not a quality guarantee; confirm access, API economics and a measurable gain on the same task before making it a default.
- API cost
- Depends on surfacePro access depends on ChatGPT plan or current API pricing; the cited product record does not publish one portable task price.
- Context window
- Not disclosedNot disclosed in the cited record
- Maximum output
- Not disclosedNot disclosed in the cited record
- Knowledge cutoff
- Not disclosedNot disclosed in the cited record
- Recorded inputs
- Not enumerated in cited record
- Recorded output
- Not enumerated in cited record
Data handling is a product decision
Depends on surfaceOpenAI API training and retention controls differ by endpoint and organisation; ChatGPT Pro is governed by separate product settings. Verify the surface in use.
Operational constraints
- Pro has a separate allowance on some plans and may become temporarily unavailable when that allowance is reached.
- Longer-running work still needs timeout, retry and human-review rules in an integration.
Unknown means the cited official record does not disclose a safe value. It is not an estimate. Prices are provider list prices in USD where stated and can change before this record's review date.
Keep the evidence separate
OpenAI describes Sol Pro as its highest-capability GPT-5.6 choice for difficult tasks and longer-running workflows.
His GPT-5.6 review reinforces that model size and nominal token price do not settle real cost; reasoning volume and performance on the exact task still need measurement.
Read the independent source ↗No Human Bit result is claimed; use this as evaluation guidance only.
Not scheduled
No Human Bit result is claimed for this model yet.