GPT-6.1-Sol
The balanced mid-tier of the GPT-6 line, offering most of Astra's quality at a fraction of the cost. A strong default for production applications that need speed and capability together.
At a glance
Released
Oct 15, 2026
Provider
OpenAI
Context window
1,000,000 tokens
Max output
64,000 tokens
Modalities
Text + image → text
Knowledge cutoff
July 2026
API model ID
gpt-6.1-solLicense
Proprietary (API only)
Pricing
Standard
Input$2 / 1M
Output$10 / 1M
Batch (50% off)
Input$1 / 1M
Output$5 / 1M
A typical 1,500-token prompt with a 650-token answer costs ≈ $0.009 on the standard tier. Run your own prompt through the calculator →
What's new vs the previous model
Compared withGPT-6-Sol (August 2026)
- Improved reasoning and reliability over GPT-6-Sol
- Faster responses at the same price point
- Better instruction following
- Still short of Astra on the hardest tasks
Best use cases
Production apps
Serves general assistant and generation workloads at scale.
Coding assistance
Handles day-to-day development tasks quickly.
Document processing
Summarizes and transforms long inputs efficiently.
Strengths & limitations
Strengths
- Strong balance of cost and quality
- Fast
- Large context
- Versatile
Limitations
- Less capable than Astra
- Not the cheapest tier
How to test it
- No-code: open chatgpt.com and pick GPT-6.1-Sol from the model switcher — no API key needed.
- Playground: sign in to the OpenAI Platform and run prompts in the workbench, then copy the generated code.
- API: create a key in the OpenAI Platform and call the API (example below).
curl https://api.openai.com/v1/chat/completions \
-H "Authorization: Bearer $API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "gpt-6.1-sol",
"messages": [{"role": "user", "content": "Explain tokenization in one paragraph."}]
}'