GPT-5.6 Sol Pro (batch)
OpenAI · Multimodal · Released Jul 2026
GPT-5.6 Sol Pro (batch) is OpenAI's flagship reasoning model in the GPT-5.6 series, served in batch mode with pro-level reasoning for higher-quality responses on complex tasks and a 1.05M token context window.
- Strengths
- Combines the flagship reasoning capability of Sol with pro-level reasoning mode to deliver higher-quality outputs on complex, difficult problems.
- Best for
- Batch workloads requiring sophisticated reasoning and problem-solving, where latency is not a constraint and maximum accuracy matters.
- Limitations
- Batch-only availability limits it to asynchronous, non-real-time use cases; it has been superseded by the GPT-6 Astra series as OpenAI's flagship offering.
Input / 1M
$2.00
Output / 1M
$10.00
Cached input / 1M
$0.2
Context window
1.05M
Also billed
- Cache write
- $2.50 / 1M
Price history
Input (solid)Output (dashed)
Price change
- 30d
- in increased 100.0% out increased 100.0%
- 90d
- in decreased 20.0% out decreased 33.3%
- 1y
- in decreased 20.0% out decreased 33.3%
- Since launch
- in decreased 20.0% out decreased 33.3%
Snapshots
| Effective | Input | Output | Cached in | Note | Source |
|---|---|---|---|---|---|
| 15 Oct 2026 | $2.00 | $10.00 | $0.2 | Imported from OpenRouter | openrouter.ai |
| 22 Aug 2026 | $1.00 | $5.00 | $0.1 | Imported from OpenRouter | openrouter.ai |
| 17 Aug 2026 | $1.25 | $7.50 | $0.125 | Imported from OpenRouter | openrouter.ai |
| 6 Aug 2026 | $2.50 | $15.00 | $0.25 | Imported from OpenRouter | openrouter.ai |