GPT-6.1 Sol API
Near-Astra performance for complex coding, computer use, and professional work—at the Sol price point. Access the live model through one LAYSO API key and evaluate it against your existing GPT-6 routes.
Live catalog status checked September 30, 2026. Route availability and account pricing can change; verify the pricing page before production rollout.
Official specifications
GPT-6.1 Sol at a glance
These values come from OpenAI's announcement, model documentation, and pricing page—not estimates derived from another model.
- Model ID
- gpt-6.1-sol
- Context window
- 1,050,000 tokens
- Maximum output
- 128,000 tokens
- Knowledge cutoff
- April 30, 2026
- Input
- $2.00 / 1M tokens
- Cached input
- $0.10 / 1M tokens
- Cache writes
- $2.50 / 1M tokens
- Output
- $10.00 / 1M tokens
What changed
What GPT-6.1 Sol improves over GPT-6 Sol
OpenAI's launch results point to stronger long-horizon coding, professional automation, computer use, and scientific terminal work. The figures below are first-party benchmark comparisons, not a promise that every prompt will improve by the same amount.
Review OpenAI's benchmark methodology
Complex coding
DeepSWE v1.1
OpenAI reports GPT-6.1 Sol's best score is 6.4 points above GPT-6 Sol, at roughly one fifth of GPT-6 Astra's cost.
Professional automation
AutomationBench
At the same reasoning setting, OpenAI reports a 4.8-point improvement over GPT-6 Sol on professional automation tasks.
Computer use
OSWorld 2.0
OpenAI reports a seven-point gain over GPT-6 Sol at less than half the cost; at max effort it is within 2.1 points of Astra.
Scientific terminal work
Terminal-Bench Science
OpenAI reports more than double GPT-6 Sol's score while using less than half the cost on this benchmark.
Complex coding
Designed for long-horizon software work, debugging, repository changes, and agentic development workflows.
Near-Astra value
OpenAI positions GPT-6.1 Sol close to Astra on demanding tasks while standard token prices remain one fifth of Astra.
Large working context
A 1.05M-token context window supports large codebases and document-heavy workflows, with long-context pricing rules to consider.
One gateway
Call GPT-6.1 Sol through LAYSO
The live LAYSO catalog currently lists gpt-6.1-sol. Use the same base URL and API key pattern as your other compatible chat models.
- Keep the model ID configurable.
- Run quality, latency, and cost evaluations before migration.
- Use the Responses API when your workflow needs OpenAI built-in tools.
curl https://api.layso.ai/v1/chat/completions \
-H "Authorization: Bearer $LAYSO_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "gpt-6.1-sol",
"messages": [
{"role": "user", "content": "Review this migration plan."}
]
}'Migration
GPT-6.1 Sol vs GPT-6 Sol
| Area | GPT-6.1 Sol | Migration check |
|---|---|---|
| Model ID | gpt-6.1-sol | Change the configured model explicitly. |
| Reasoning effort | low, medium, high, xhigh, max | none and minimal are not supported. |
| Tool calling | Responses API recommended | Chat Completions is supported without tool calling. |
| Evaluation focus | Coding, computer use, professional work | Compare quality and total task cost on your prompts. |
GPT-6.1 Sol FAQ
Short answers based on current first-party documentation and the live LAYSO catalog.
Is GPT-6.1 Sol officially available?
Yes. OpenAI announced GPT-6.1 Sol and documents the API model ID gpt-6.1-sol. The model is also listed in the live LAYSO model catalog.
What is the GPT-6.1 Sol API model ID?
Use gpt-6.1-sol. Keep the model name configurable so you can test it alongside GPT-6 Sol and GPT-6 Astra before changing production traffic.
How much does GPT-6.1 Sol cost?
OpenAI lists standard short-context prices of $2 per million input tokens, $0.10 per million cached input tokens, $2.50 per million cache-write tokens, and $10 per million output tokens. Check LAYSO pricing for the live route and billing terms available to your account.
How large is the GPT-6.1 Sol context window?
The official model page lists a 1,050,000-token context window and a maximum output of 128,000 tokens.
Should I migrate from GPT-6 Sol?
Evaluate GPT-6.1 Sol on your own coding, computer-use, and professional workloads first. It changes supported reasoning-effort values and OpenAI recommends the Responses API for tool calling.