gpt-5.1-chat API price comparison
Compare gpt-5.1-chat token prices across supported API token platforms.
Cheapest overall
Yunwu
6.75 USD/M tokens combined per 1M tokens
Lowest input
Yunwu
0.75 USD/M tokens input per 1M tokens
Lowest output
Yunwu
6.00 USD/M tokens output per 1M tokens
Last refreshed
Jun 20, 2026
3 listed platforms
Best listed option
gpt-5.1-chat is currently cheapest overall on Yunwu, with input at 0.75 USD/M tokens and output at 6.00 USD/M tokens per million tokens.
Pricing insight
Across 3 listed routes, gpt-5.1-chat is cheapest overall on Yunwu at 6.75 USD/M tokens. The median combined price is 11.25 USD/M tokens, so the cheapest route is about 40% below the median listed route.
-
Lowest total cost
Yunwu
Best first check for balanced coding-agent sessions: 6.75 USD/M tokens.
-
Prompt-heavy work
Yunwu
Useful for large repositories and long context reads: 0.75 USD/M tokens input.
-
Response-heavy work
Yunwu
Useful for long answers, edits, and agent loops: 6.00 USD/M tokens output.
Median combined price
11.25 USD/M tokens
Baseline for judging whether the cheapest route is unusually low.
Cache price coverage
67%
2 of 3 routes publish cache read or write prices.
Fresh rows
0/3
Routes crawled in the last 72 hours.
Use case fit
gpt-5.1-chat is suited to general API tasks, coding assistants, and agent workflows across the OpenAI model family. Output price matters most for long-form answers and tool-heavy sessions.
Platform price comparison
| Platform | Ratio | Input | Output | Total |
|---|---|---|---|---|
| Yunwu | 0.60x | 0.75 USD/M tokens | 6.00 USD/M tokens | 6.75 USD/M tokens |
| Atlas Cloud | 1.00x | 1.25 USD/M tokens | 10.00 USD/M tokens | 11.25 USD/M tokens |
| DMXAPI | 1.00x | 1.25 USD/M tokens | 10.00 USD/M tokens | 11.25 USD/M tokens |
FAQ
Where is gpt-5.1-chat cheapest?
Yunwu has the lowest listed combined price at 6.75 USD/M tokens per 1M tokens.
What do input and output prices mean?
Input is charged for prompt tokens you send. Output is charged for tokens generated by the model.
How often are prices refreshed?
Prices are crawler-backed and this page was last refreshed Jun 20, 2026. Always confirm before large purchases.