OpenAI · AI model API pricing
How much does GPT-5.6 Sol cost?
OpenAI's flagship (GA July 9, 2026) — top of the GPT-5.6 family, priced at the classic frontier rate.
Rate card
| Input tokens | $5 / 1M |
| Cached input | $0.50 / 1M |
| Output tokens | $30 / 1M |
| Context window | 1M |
What that means per month
| Workload | Tokens / month | Cost / month |
|---|---|---|
| Prototype | 1M in · 0.3M out | $14/mo |
| Small app | 10M in · 3M out | $140/mo |
| Production app | 50M in · 15M out | $700/mo |
| High volume | 200M in · 60M out | $2,800/mo |
| Heavy platform | 1B in · 300M out | $14,000/mo |
Standard on-demand rates from OpenAI's official pricing page, last checked 2026-07-16. Batch API runs at 50% of these rates. Monthly figures exclude caching and batch discounts. Confirm live pricing before committing.
Cheaper alternatives
At a reference workload of 10M input / 3M output tokens a month, these cost less than GPT-5.6 Sol ($140/mo):
-
Claude Opus 4.8 $125/mo -
Kimi K3 $75/mo - Claude Sonnet 5 $75/mo