GPT-6.1 Sol vs GPT-6 Sol
Which one to choose
Pick GPT-6.1 Sol for new coding, computer-use and professional-work projects that are text and tools only: OpenAI recommends it over GPT-6 Sol and describes near-Astra intelligence from it. Pick GPT-6 Sol when you need image input, schema-constrained JSON, or a reasoning setting of none. The split is capability fit: 6.1 is the maker's successor, but it gives up several input and output options.
Pricing comparison
| GPT-6.1 Sol | GPT-6 Sol | |
|---|---|---|
| Model maker | OpenAI | OpenAI |
| Delivery availability | Available | Available |
| Context window | 1.05M | 1.05M |
| Max output | 128K | 128K |
| Official price | Input$2.00per 1M tokensOutput$10.00per 1M tokens | Input$2.00per 1M tokensOutput$10.00per 1M tokens |
| TokenLab price | Input$0.60per 1M tokensOutput$3.00per 1M tokens | Input$0.60per 1M tokensOutput$3.00per 1M tokens |
| Model performance |
|
|
| Capabilities | CodePrompt CacheReasoningTool use | CodeJSON modePrompt CacheReasoningTool useVision |
Choose GPT-6.1 Sol when
- Your workload is text and tool calls on complex coding or professional tasks
- You do not need images or schema-bound JSON
- You want reasoning effort that scales from low up to max
Choose GPT-6 Sol when
- Your prompts include screenshots, diagrams or other images
- You rely on schema-checked JSON output
- You want to turn reasoning off for simple calls
How they differ
| Aspect | GPT-6.1 Sol | GPT-6 Sol |
|---|---|---|
| Relationship | OpenAI's update to GPT-6 Sol and the model it recommends for new projects. | The earlier Sol, kept for existing deployments. |
| Reasoning range | Effort runs from low to max, with medium as default; it cannot be set to none. | Supports a reasoning setting of none as well as higher levels. |
| Image input | Text only, with no image input. | Accepts images alongside text. |
| Structured output | No schema-constrained JSON output. | Returns schema-checked JSON next to tool calls. |
| Hard-task results | OpenAI reports it ahead of GPT-6 Sol on computer-use and terminal science evaluations at maximum effort. | The baseline those OpenAI comparisons use. |
Summary
- GPT-6.1 Sol: Input $0.60 / Output $3.00 per 1M tokens; GPT-6 Sol: Input $0.60 / Output $3.00 per 1M tokens. Rates depend on the billing unit, specification, and usage. Compare matching conditions in the model's detailed pricing; a single rate does not determine the total cost.
FAQ
Is GPT-6.1 Sol better than GPT-6 Sol?
For complex coding and computer use, OpenAI says yes and recommends 6.1 for new projects. It is not a superset, though: GPT-6 Sol still handles images, schema-checked JSON and a reasoning setting of none.
Can GPT-6.1 Sol replace GPT-6 Sol without prompt changes?
Only if you use no images and no strict JSON schemas. Otherwise change those parts first. Also set reasoning effort explicitly, because none is not available.
Which is better for coding agents?
GPT-6.1 Sol, per OpenAI's evaluations, as long as the agent works on text and tools. If the agent also reads screenshots, GPT-6 Sol is the option that accepts them.
Should I use both?
It can make sense: route text-and-tool coding runs to GPT-6.1 Sol, and send image-bearing, schema-bound or reasoning-off requests to GPT-6 Sol, which supports those options.
Which is cheaper, GPT-6.1 Sol or GPT-6 Sol?
GPT-6.1 Sol: Input $0.60 / Output $3.00 per 1M tokens; GPT-6 Sol: Input $0.60 / Output $3.00 per 1M tokens. Rates depend on the billing unit, specification, and usage. Compare matching conditions in the model's detailed pricing; a single rate does not determine the total cost.
What are the key differences between GPT-6.1 Sol and GPT-6 Sol?
GPT-6 Sol: JSON mode, Vision
Sources
Reviewed Oct 2, 2026