Chat with GPT-5.6 Sol or create an Agent
Start a private conversation with OpenAI's frontier GPT-5.6 tier, then use the same fixed model for a coding, research, or workflow Agent.
Chat with GPT-5.6 Sol or build on it
Open the shared GPT-5.6 Sol Chatbot for a direct conversation, or create a new private Agent with a fixed GPT-5.6 Sol runtime.
Chat now or create an Agent
Start a conversation with the fixed model, or use it to create a private Agent with your own Skill and instructions.
Release and API status
Current public facts from OpenAI documentation.
GPT-5.6 Sol facts
Use these fields when deciding whether GPT-5.6 Sol fits a private Agent workload.
- Model ID
- gpt-5.6-sol
- Context window
- 1.05M
- Max output
- 128K
- Modalities
- Text and image input
- Reasoning
- none to max
- Model weights
- Not publicly specified
Use gpt-5.6-sol for the Sol tier; gpt-5.6 is the documented alias.
OpenAI documents a 1,050,000-token context window for GPT-5.6 Sol.
OpenAI documents a 128,000-token maximum output for GPT-5.6 Sol.
OpenAI model comparison lists image input support for the GPT-5.6 family.
Reasoning effort levels are documented for GPT-5.6 Sol.
OpenAI documents the API model, not downloadable model weights.
Best-fit Agent use cases
Prioritize workflows where strong reasoning and long context matter more than raw token price.
Decision evidence
Provider-published facts that matter for private Agent selection.
| Dimension | Official evidence | Decision use |
|---|---|---|
| Model positioning | OpenAI describes GPT-5.6 Sol as the frontier tier for complex professional work. | Start here when quality and reasoning depth outweigh cost sensitivity. |
| Long context | OpenAI lists a 1.05M context window and 128K max output. | Useful for repository, document, or workflow Agents that need many inputs at once. |
| Tiered pricing | OpenAI publishes Sol, Terra, and Luna pricing with standard, batch, flex, and priority modes. | Test Sol for quality, then compare Terra or Luna when cost becomes the constraint. |
Do not treat provider positioning as an outcome benchmark; run your own acceptance scenarios.
Published API pricing
Standard short-context / long-context rates per 1M tokens from OpenAI pricing.
| Model | Input | Output |
|---|---|---|
| gpt-5.6-sol | $5.00 / $10.00 | $30.00 / $45.00 |
| gpt-5.6-terra | $2.50 / $5.00 | $15.00 / $22.50 |
| gpt-5.6-luna | $1.00 / $2.00 | $6.00 / $9.00 |
Prices shown as short context / long context per 1M tokens. Batch, flex, priority, tool, and data residency charges can change the effective cost.
Operational limits
Validate these before production Agent rollout.
Official sources
Primary OpenAI documentation used for this page.
GPT-5.6 Sol FAQ
Answers about GPT-5.6 Sol online Chat, API access, pricing, context, and Agent creation.
Use GPT-5.6 Sol for your next task
Start a direct Chat now, or create a private GPT-5.6 Sol Agent with your own workflow and Skill.