ModelPricing.aiGPT-5.6 Sol API Pricing
OpenAI pricing verified
GPT-5.6 Sol costs $4.00 per million input tokens and $20.00 per million output tokens on the OpenAI API. That is promotional pricing — the standard rate is $5.00 input and $30.00 output. Prices are tracked from the official OpenAI pricing table and used by the ModelPricing.ai estimation API, so this page and the API always quote the same numbers. See all OpenAI model pricing or the full LLM pricing comparison.
GPT-5.6 Sol is priced at $4.00 per 1M input and $20.00 per 1M output August 24, 2026 to November 22, 2026, against a list price of $5.00 / $30.00. Applies to the Up to 272K tokens tier.
GPT-5.6 Sol is priced at $8.00 per 1M input and $30.00 per 1M output August 24, 2026 to November 22, 2026, against a list price of $10.00 / $45.00. Applies to the Above 272K tokens tier.
GPT-5.6 Sol Pricing Per Million Tokens
| Tier | Input / 1M | Output / 1M | Cache read / 1M | Cache write / 1M |
|---|---|---|---|---|
| Up to 272K input tokens | $4.00 | $20.00 | $0.400 | $5.00 |
| Above 272K input tokens | $8.00 | $30.00 | $0.800 | $10.00 |
Rates above reflect the promotional pricing currently in effect.
What GPT-5.6 Sol Costs In Practice
Monthly cost at three representative workloads, using the standard text rate in effect today.
| Workload | Monthly cost |
|---|---|
| Light — 1M in / 200K out | $8.00 |
| Moderate — 10M in / 2M out | $80.00 |
| Heavy — 100M in / 20M out | $800.00 |
Need your own numbers? Use the LLM cost calculator or call the estimation API directly.
Compare GPT-5.6 Sol With Other Models
Looking for something cheaper from OpenAI? GPT-5 Nano is the lowest-priced option on input tokens.
GPT-5.6 Sol Pricing FAQ
How much does GPT-5.6 Sol cost per token?
GPT-5.6 Sol costs $4.00 per million input tokens and $20.00 per million output tokens on the OpenAI API. That works out to $0.0040 per thousand input tokens. That is discounted from a list price of $5.00 input and $30.00 output.
How much does it cost to run GPT-5.6 Sol per month?
At 1M in / 200K out per month, GPT-5.6 Sol costs about $8.00. A heavier workload of 100M input and 20M output tokens costs about $800.00.
Does GPT-5.6 Sol charge more for long context?
Yes. GPT-5.6 Sol uses breakpoint pricing: requests above 272K input tokens move to a higher rate of $10.00 per million input tokens, up from $5.00 below the threshold.
Does GPT-5.6 Sol support prompt caching?
Yes. Cached input tokens are billed at $0.400 per million on GPT-5.6 Sol, compared with $4.00 per million for uncached input.
Is there promotional pricing for GPT-5.6 Sol?
Yes. Lower API pricing prices GPT-5.6 Sol at $4.00 per million input tokens and $20.00 per million output tokens August 24, 2026 to November 22, 2026, about 31% below list price.
Estimate GPT-5.6 Sol costs programmatically
POST a token count to /v1/estimate with model gpt-5.6-sol and get a priced breakdown back, promotions
already applied.