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Pricing · OpenAI

GPT-6 Sol

OpenAI's gpt-6-sol, 1.1M tokens of context. Every number on this page was read off OpenAI's own pricing page — never estimated, never recalled from memory.

How OpenAI describes it

“GPT-6 Sol is built for complex coding and agentic workflows.”

Pricing

Input $2.00 per 1M tokens
Output $10.00 per 1M tokens
Cached input $0.20 per 1M tokens · 0.1× the input price
Cache write $2.50 per 1M tokens

Long-prompt tiers

Pricing changes above a prompt-size threshold. If your average request is near the boundary, the effective rate is not the headline rate.

Condition Input Output Cached input
prompt > 272000 tokens $4.00 $15.00 $0.40

At the calculator's starting volume, 1M input tokens and 200K output tokens with no cache hits, GPT-6 Sol costs $4.00: $2.00 for input and $2.00 for output, at the prices above. Same formula as the calculator; change the volume there.

Where this price sits

$2.00 per 1M input tokens (for prompts up to 272K tokens) is the 39th cheapest input price of the 67 current models with a verified price on this site, and the 4th of OpenAI's 11. Output costs 5.0× the input price.

Other current models in the GPT-6 family:

Against GPT-5.6 Sol

GPT-5.6 Sol is the earlier version of the same name in this dataset (still current). Against GPT-5.6 Sol, GPT-6 Sol has input at $2.00 against $4.00, 2× less; output at $10.00 against $20.00, 2× less; cached input at $0.20 against $0.40, 2× less (per 1M tokens). Its prices were verified September 28, 2026: GPT-5.6 Sol pricing →

Specifications

API model id gpt-6-sol
Provider OpenAI
Family GPT-6
Context window 1.1M tokens
Max output 128K tokens
Knowledge cutoff 2026-04-20
Released September 22, 2026
Status Current

GPT-6 Sol was released on September 22, 2026. It returns up to 128K tokens per response, against a context window of 1.1M tokens.

Questions about GPT-6 Sol pricing

How much does GPT-6 Sol cost per million tokens?
$2.00 per 1M input tokens and $10.00 per 1M output tokens for prompts up to 272,000 tokens, read on OpenAI's model page on September 30, 2026.
What does a cached input token cost on GPT-6 Sol?
$0.20 per 1M cached input tokens, 10% of the $2.00 input price; writing to the cache costs $2.50 per 1M tokens.
Does GPT-6 Sol cost more for long prompts?
Yes. For prompts over 272,000 tokens it costs $4.00 per 1M input tokens and $15.00 per 1M output tokens, $0.40 for cached input, against $2.00 and $10.00 below that.

Released September 22, 2026 (OpenAI changelog, Sep 22: 'Released GPT-6 Sol (gpt-6-sol) and GPT-6 Luna (gpt-6-luna). … GPT-6 Sol: $2 input, $0.20 cached input, and $10 output.'). Since GPT-6.1 Sol was released on September 29, 2026, OpenAI's pricing page no longer lists gpt-6-sol, so this row cites its model page, which still prices it (read on 2026-09-30): 'See GPT-6.1 Sol for the newer Sol model.', 'Input $2.00 Cached input $0.20 Cache writes $2.50 Output $10.00', 'Cached input tokens are priced at 10% of the uncached input token rate.', 'Prompts with more than 272K input tokens are priced at 2x input and cache rates and 1.5x output for the full request.', 'Use gpt-6-sol in your API requests.' OpenAI's deprecations page does not name it (read the same day), so it is not deprecated. The long-context figures ($4.00 input, $0.40 cached input, $5.00 cache writes, $15.00 output) were read on 2026-09-24 from the pricing page, Flagship models, Standard tab: 'gpt-6-sol | $2.00 | $0.20 | $2.50 | $10.00 | $4.00 | $0.40 | $5.00 | $15.00'; the model page prints the 2x / 1.5x rule for them, not the figures. Model page, read on 2026-09-24: '1,050,000 context window', '128,000 max output tokens', 'Apr 20, 2026 knowledge cutoff'.

Verified September 30, 2026 against OpenAI's model page. Confidence: confirmed. No price change recorded for this model. How the data is checked.

Other OpenAI models with a verified price

Cheaper or equally priced alternatives

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