API prices / Compare

Claude Sonnet 5.5 vs GPT-6.1 Sol: price

Claude Sonnet 5.5 and GPT-6.1 Sol cost about the same for a typical chat workload.

ItemClaude Sonnet 5.5GPT-6.1 Sol
Input per 1M tokens$2.00$2.00
Output per 1M tokens$10.00$10.00
Cached input per 1M$0.10$0.10
1,000 chat messages1,500 tokens in, 500 out each$8.00$8.00
Summarize a 50-page PDF30,000 tokens in, 1,000 out$0.07$0.07
One coding-agent task60,000 tokens in, 4,000 out, no caching$0.16$0.16

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

List prices checked October 26, 2026. Price is half the story: see how people rate each one today.

Claude Sonnet 5.5 vs GPT-6.1 Sol in numbers

Both charge $10.00 per million output tokens. Input costs the same, $2.00 per million tokens. For a coding-agent task (60,000 tokens in, 4,000 out) that is $0.16 on Claude Sonnet 5.5 and $0.16 on GPT-6.1 Sol. Claude Sonnet 5.5 accepts 1M tokens of context and GPT-6.1 Sol 1.05M tokens. Claude Sonnet 5.5 came out on September 28, 2026 and GPT-6.1 Sol on September 29, 2026.

Claude Sonnet 5.5 is made by Anthropic; GPT-6.1 Sol by OpenAI. Estimate your own bill for both in the cost calculator.

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Frequently asked questions

Is Claude Sonnet 5.5 or GPT-6.1 Sol cheaper?

Claude Sonnet 5.5 and GPT-6.1 Sol cost about the same for a typical chat workload. Both charge $10.00 per million output tokens.

Which is better, Claude Sonnet 5.5 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 Claude Sonnet 5.5 and GPT-6.1 Sol pages, and read what users report in Discussions.