AI Rate CardGemini 2.5 Pro vs GPT-5.1 Chat: API price and specs
Gemini 2.5 Pro is 43% cheaper than GPT-5.1 Chat on input price.
Gemini 2.5 Pro is 44% cheaper than GPT-5.1 Chat on output price.
Gemini 2.5 Pro is 44% cheaper than GPT-5.1 Chat on a 1M-in / 200k-out workload.
Gemini 2.5 Pro has a 732.4% larger context than GPT-5.1 Chat.
| Field | Gemini 2.5 Pro | GPT-5.1 Chat |
|---|---|---|
| Lowest input, per 1M | $0.62 | $1.10 +76% |
| Median input, per 1M | $1.25 | $1.25 |
| Lowest output, per 1M | $5.00 | $9.00 +80% |
| Median output, per 1M | $10.00 | $10.00 |
| Lowest unit price | — | — |
| Cost of 1M in + 200k out | $1.62 | $2.90 +78.5% |
| Context | 1.1M | 128K +88% |
| Max output | 66K | 64K +2.3% |
| Providers | 24 | 6 +75% |
| Regions | EU, GLOBAL, US | — |
| Accepts | application/pdf, audio, audio/aac, audio/aiff, audio/alaw, audio/flac, audio/l16, audio/m4a, audio/mp3, audio/mpeg, audio/mulaw, audio/ogg, audio/opus, audio/wav, audio/webm, file, image, image/heic, image/heif, image/jpeg, image/png, image/webp, pdf, text, video, video/3gpp, video/avi, video/mov, video/mp4, video/mpeg, video/mpg, video/webm, video/wmv, video/x-flv | image, image/gif, image/jpeg, image/png, image/webp, pdf, text |
| Returns | text | image, text |
| Type | Text models | Text models |
| Free option | no | no |
| Cheapest provider | kilo | poe |
Your own workload: how many tokens the model gets (input) and gives back (output) - for example, in a month. The "Cost" row of the table above is recalculated for these numbers, for each model.
Computed from current offers each time the page opens; the best value of a row is bold, the percent is how far behind the best.
Providers selling both
302ai, aihubmix, helicone, orcarouter, poe, zenmux
Frequently asked questions
Which is cheaper, Gemini 2.5 Pro or GPT-5.1 Chat?
Gemini 2.5 Pro is 43% cheaper than GPT-5.1 Chat on input price. Gemini 2.5 Pro is 44% cheaper than GPT-5.1 Chat on output price. Gemini 2.5 Pro is 44% cheaper than GPT-5.1 Chat on a 1M-in / 200k-out workload.
Which has the larger context, Gemini 2.5 Pro or GPT-5.1 Chat?
Gemini 2.5 Pro: 1.1M tokens; GPT-5.1 Chat: 128K tokens.
Where can I use both Gemini 2.5 Pro and GPT-5.1 Chat?
302ai, aihubmix, helicone, orcarouter, poe, zenmux