GPT-6.1 Sol Pro

Pricing updated daily · Last refreshed Oct 29, 2026

OpenAI model with a 1.05M-token context window, priced at $2.00 per million input tokens and $10.00 per million output tokens.

At a glance

Provider
OpenAI
Context window
1,050,000 tokens
Max output
128,000 tokens
Input price
$2.00 / 1M tokens
Output price
$10.00 / 1M tokens
Input types
image, text
Function calling
Yes
Released
September 29, 2026

What it costs

Illustrative request sizes, not measurements of any real product. For your own volumes, use the cost estimator.

Example costs for GPT-6.1 Sol Pro
WorkloadTokens in / outPer requestPer 1,000 requests
Short chat reply1,000 / 500$0.0070$7.00
Question over retrieved documents8,000 / 500$0.0210$21.00
Summarise a long document50,000 / 1,500$0.1150$115.00

How it compares

  • Input price ($2.00 per 1M tokens) is the 22nd lowest of 30 models in the catalogue.
  • Output price ($10.00 per 1M tokens) is the 22nd lowest of 30.
  • Context window (1.05M tokens) is the 2nd largest of 30.
  • Maximum output (128K tokens) is the 7th largest of 30.
  • On blended price it is 100% more expensive than the median OpenAI model in the catalogue.

These are rankings by listed price and size within this catalogue (blended price weights input 3:1 against output), not a measure of output quality.

Cheaper models with the same capabilities

Lower blended price, at least the same context window, and the same input types and function calling.

Cheaper alternatives to GPT-6.1 Sol Pro
ModelProviderContextInput $/1MOutput $/1M
Llama 4 ScoutMeta1.31M$0.10$0.30
GPT-6 Luna ProOpenAI1.05M$0.10$0.50
GPT-6.1 TerraOpenAI1.05M$1.00$5.00

More from OpenAI

Other OpenAI models
ModelProviderContextInput $/1MOutput $/1M
GPT-6.1 TerraOpenAI1.05M$1.00$5.00
GPT-6.1 Terra ProOpenAI1.05M$1.00$5.00
GPT-6.1 SolOpenAI1.05M$2.00$10.00
GPT-6 Luna ProOpenAI1.05M$0.10$0.50

Try it with your own text

Source: OpenRouter’s public model catalogue (openai/gpt-6.1-sol-pro), read once a day. These are the prices OpenRouter charges; a provider’s own list price can differ, so check the provider before committing to a budget.

llmtools is a vendor-neutral toolkit for working with large language models — token counting, cost estimation and model comparison, computed in your browser. OpenAI token counts are exact, using the same encoding the model does (o200k_base for GPT-4o, cl100k_base for GPT-4/3.5); Claude and Gemini counts are labelled approximations, since neither publishes a tokenizer that runs client-side. Model pricing is read from OpenRouter’s public catalogue once a day. Nothing you type is ever transmitted anywhere.