GPT-6.1 Sol

Q: What is the API model name for GPT-6.1 Sol?

Use gpt-6.1-sol in API calls to OpenAI. The context window is 1.05M tokens, and a response can run to 128,000 output tokens.

GPT-6.1 Sol API pricing is $2 per million input tokens and $10 per million output tokens.

Provider: OpenAI
API model name: gpt-6.1-sol
Status: Current
Input, $ per 1M tokens: $2.00
Cached input, $ per 1M tokens: $0.10
Output, $ per 1M tokens: $10.00
Sample request (10K in, 2K out), $: $0.04
Context window, tokens: 1.05M
Price checked on: October 31, 2026
Official pricing page: developers.openai.com

These are standard rates on OpenAI’s own API. Cached input is billed at $0.10 per million tokens, half of GPT-6 Sol’s $0.20. A request with 10,000 input tokens and 2,000 output tokens costs about $0.04 before caching or batch discounts. The API model name is gpt-6.1-sol, and the context window is 1.05M tokens. GPT-6 Astra runs the same request for about $0.20.

Cache writes, $ per 1M tokens: $2.50
Max output, tokens: 128K
Input types: Text, image
Open weights: No
Long-context pricing: $4 input, $0.20 cached input, $5 cache writes, $15 output
Batch pricing: 50% off standard rates
Pricing notes: Long-context rates apply to the whole request once a prompt exceeds 272K input tokens. Fast mode costs 2x standard rates.
Sources: Page URL Checked
OpenAI API pricing https://developers.openai.com/api/docs/pricing 2026-10-21
OpenAI GPT-6.1 Sol model page (prices, context and output limits) https://developers.openai.com/api/docs/models/gpt-6.1-sol 2026-09-30

Page	URL	Checked
OpenAI API pricing	https://developers.openai.com/api/docs/pricing	2026-10-21
OpenAI GPT-6.1 Sol model page (prices, context and output limits)	https://developers.openai.com/api/docs/models/gpt-6.1-sol	2026-09-30

Price changes for this model

Effective	Change	Was	Now	Official source
September 29, 2026	New pricing tier	GPT-6 Sol: $2 input, $0.20 cached input, $10 output per 1M tokens	GPT-6.1 Sol: $2 input, $0.10 cached input, $2.50 cache writes, $10 output per 1M tokens	developers.openai.com

Questions

How much does the GPT-6.1 Sol API cost?

GPT-6.1 Sol costs $2 per million input tokens and $10 per million output tokens on OpenAI’s own API. Cached input costs $0.10 per million tokens.

What is the API model name for GPT-6.1 Sol?

Use gpt-6.1-sol in API calls to OpenAI. The context window is 1.05M tokens, and a response can run to 128,000 output tokens.

What does one GPT-6.1 Sol request cost?

A request with 10,000 input tokens and 2,000 output tokens costs about $0.04 at standard rates, before caching or batch discounts. Batch requests get 50% off standard rates.

Does GPT-6.1 Sol cost more for long prompts?

Yes. OpenAI lists long-context rates per million tokens: $4 input, $0.20 cached input, $5 cache writes, $15 output. Long-context rates apply to the whole request once a prompt exceeds 272K input tokens.

Sources

Prices are read from each provider’s official pricing page: OpenAI, Anthropic, Google Gemini API, xAI, DeepSeek and Mistral AI. Context and output limits that a provider does not publish come from OpenRouter’s model listing. Each model’s Sources field lists the pages used and the date each was checked. How we check prices · Price change log