InferIndex · https://inferindex.dev/en/compare/google/gemini-2.5-pro-preview/vs/openai/gpt-5
Gemini 2.5 Pro Preview 06-05 costs from $3.44 per million tokens and GPT-5 from $3.44 (at a 3:1 input:output mix): the cheapest price for each; prices checked on .
Verdict
At these prices, the two models cost about the same per million tokens (at a 3:1 input:output mix).
Each model's lowest blended price, per 1M tokens, across every provider we track.
| Model | Lowest blended price, $ per 1M tokens. Green background: the most favourable value of each column. | Input price of the cheapest offer, per 1M tokens | Output price of the cheapest offer, per 1M tokens | The provider's published policy says the text you send is not used to train models. We only show what is published; we can't check it ourselves. | For 2,000 input tokens and 500 output tokens per request, 1,000 requests a day, at the cheapest offer for that workload. Change the workload above. | Offers | Providers | The maximum amount of text, counted in tokens, the model can take in and write in a single request. Past this limit, the request is refused or cut. | Observation |
|---|---|---|---|---|---|---|---|---|---|
| Most expensive offer · $4.38. The highest blended price among comparable offers: one price per provider (its cheapest route), standard tier, current prices only. Priority tiers and prices converted from points are not counted. | $1.25 | $10.00 | $3.44 | $225.00at Google AI Studio via OpenRouter | 8 | 4 | 1M | ||
| Most expensive offer · $3.78. The highest blended price among comparable offers: one price per provider (its cheapest route), standard tier, current prices only. Priority tiers and prices converted from points are not counted. | $1.25 | $10.00 | $3.44 | $225.00at OpenAI | 29 | 16, most favourable value of the column | 400k |
Green background: the most favourable value of each column.
Prices as of Oct 31, 2026, 1:58 AM UTCSame rules as the API's /cheapest route. The monthly estimate uses the cheapest offer for that workload.