Gemini 3.1 Flash Image vs GPT Image 2.5 Flare
rates, context and capabilities side by side on the impossibl api, and what the same workload costs on each.
| specification | Gemini 3.1 Flash Image google/gemini-3.1-flash-image | GPT Image 2.5 Flare openai/gpt-image-2.5-flare |
|---|---|---|
| input · usd / 1m tok | $0.50 | $5.00 |
| output · usd / 1m tok | $60.00 | $30.00 |
| context window | 65.54ktokens | 32ktokens |
| modalities · in → out | takes text in, gives image out | takes text in, gives image out |
pricing
| base api rates · usd per 1m tokens | Gemini 3.1 Flash Image google/gemini-3.1-flash-image | GPT Image 2.5 Flare openai/gpt-image-2.5-flare |
|---|---|---|
| input | $0.50 | $5.00 |
| output | $60.00 | $30.00 |
| text and thinking output | $3.00 | not applicable |
a shared cost estimate needs models of one type with token pricing; compare the published rates and billing units here.
specifications
| as published | Gemini 3.1 Flash Image google/gemini-3.1-flash-image | GPT Image 2.5 Flare openai/gpt-image-2.5-flare |
|---|---|---|
| creator | OpenAI | |
| model type | Image generation | Image generation |
| context window | 65,536tokens | 32,000tokens |
| input | takes text in, gives image out | takes text in, gives image out |
| output | image | image |
| tool calling | not supported | not verified |
| released | not published | sep 8, 2026 |
| endpoint | /v1/images/generations | /v1/images/generations |
unknown means the public catalog does not establish that fact. a model's documented capabilities can differ from what a particular api supports. see the model documentation for integration details.
benchmarks
| primary configuration | Gemini 3.1 Flash Image google/gemini-3.1-flash-image no benchmarks yet | GPT Image 2.5 Flare openai/gpt-image-2.5-flare text-to-image |
|---|---|---|
| intelligence index · gateway rank | not measured | not measured |
each column describes the tested configuration named under the model; performance and costs can differ on impossibl. a score one model was not measured on is left blank rather than scored zero. indices are ranked against every model on the gateway with one. last checked 2026-09-11.
summary
Gemini 3.1 Flash Image and GPT Image 2.5 Flare are available through the Impossibl API. they share the /v1/images/generations endpoint; the model identifier selects the model for a request.
Gemini 3.1 Flash Image is created by Google. It has a 65,536-token context window. Base API pricing (USD): $0.50 per million input tokens; $60.00 per million output tokens.
GPT Image 2.5 Flare is created by OpenAI. It has a 32,000-token context window. Base API pricing (USD): $5.00 per million input tokens; $30.00 per million output tokens.
Gemini 3.1 Flash Image →GPT Image 2.5 Flare →
this page compares Gemini 3.1 Flash Image vs GPT Image 2.5 Flare as listed by the impossibl public api. prices and availability come from that catalog, refreshed here every five minutes. this is an impossibl offering, not a comparison of independent hosting-provider quotes.
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