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Gemini 3.1 Pro vs GPT-6.1 Sol: price

GPT-6.1 Sol is 1.1× cheaper than Gemini 3.1 Pro for a typical chat (1,500 tokens in, 500 out).

ItemGemini 3.1 ProGPT-6.1 Sol
Input per 1M tokens$2.00$2.00
Output per 1M tokens$12.00$10.00
Cached input per 1M$0.20$0.10
1,000 chat messages1,500 tokens in, 500 out each$9.00$8.00
Summarize a 50-page PDF30,000 tokens in, 1,000 out$0.072$0.07
One coding-agent task60,000 tokens in, 4,000 out, no caching$0.168$0.16

GPT-6.1 Sol: Prompts over 272K tokens: 2x input, 1.5x output.

List prices checked November 5, 2026. Price is half the story: see how people rate each one today.

Gemini 3.1 Pro vs GPT-6.1 Sol in numbers

Output, usually the bigger part of the bill, costs $12.00 on Gemini 3.1 Pro and $10.00 on GPT-6.1 Sol, so GPT-6.1 Sol is 1.2× cheaper there. Input costs the same, $2.00 per million tokens. For a coding-agent task (60,000 tokens in, 4,000 out) that is $0.168 on Gemini 3.1 Pro and $0.16 on GPT-6.1 Sol. Gemini 3.1 Pro accepts 1.05M tokens of context and GPT-6.1 Sol 1.05M tokens. Gemini 3.1 Pro came out on February 19, 2026 and GPT-6.1 Sol on September 29, 2026.

Gemini 3.1 Pro is made by Google; GPT-6.1 Sol by OpenAI. Estimate your own bill for both in the cost calculator.

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Frequently asked questions

Is Gemini 3.1 Pro or GPT-6.1 Sol cheaper?

GPT-6.1 Sol is 1.1× cheaper than Gemini 3.1 Pro for a typical chat (1,500 tokens in, 500 out). Output, usually the bigger part of the bill, costs $12.00 on Gemini 3.1 Pro and $10.00 on GPT-6.1 Sol, so GPT-6.1 Sol is 1.2× cheaper there.

Which is better, Gemini 3.1 Pro or GPT-6.1 Sol?

It depends on the task, and price is only part of it. Check how people rate each one today on the Gemini 3.1 Pro and GPT-6.1 Sol pages, and read what users report in Discussions.