API PRICES
Google · gemini-3.1-flash-image
Provider prices, cheapest first
Google · gemini-3.1-flash-image official price: not yet recorded. Cheapest inference provider: OpenRouter, input 0.5, output 3 USD per million tokens. Cheapest relay: api.gravitex.ai, group "default" 1.125 USD_CREDIT per million total tokens (credit price, not cash, observed 2026-10-10). 59 sites have comparable prices; 292 sites list this model.Relay blended price uses 75% input and 25% output.
Official prices are the vendor's cash prices. Inference providers also list cash prices and can be compared directly. Relays list prices in site credit; what you actually pay depends on each site's top-up rate, so they cannot be compared with official prices directly.
Inference providers
| Provider | Input | Output | Cache read | Cache write | Unit | Observed | Conditions and source | vs official |
|---|---|---|---|---|---|---|---|---|
| OpenRouter · Aggregator | 0.5 | 3 | — | — | USD / 1M tokens | Official source |
Unit: USD credits per 1M tokens. These are site-credit prices; actual cost depends on each site’s top-up rate.
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Browse all providersRelays
Prices below are in site credit, not cash.
| # | Provider | Plan / conditions | Input ↑USD credits / 1M | Output USD credits / 1M | Cache readUSD credits / 1M | BlendedUSD credits / 1M | Details |
|---|---|---|---|---|---|---|---|
| Older price | |||||||
| 22 | aws.babyAsk or discussCollected: View 1 plans | Gemini Vertex | 0.85 | 102 | — | 26.1375 | Full prices and sources |
| 23 | cloudreamai.comAsk or discussCollected: View 2 plans | default Regular user group, GPT series models available [machine translation]Original: 普通用户分组，可用GPT系列模型 | 0.9 | 108 | — | 27.675 | Full prices and sources |
| 24 | ai.flashapi.topAsk or discussCollected: View 1 plans | Gemini [Gemini-T3/T1 account pool] image generation + text; when resources run short, just retry/switch models [machine translation]Original: 【Gemini-T3/T1号池】可生图+文本，资源不足时直接重试/切换模型 | 1 | 120 | — | 30.75 | Full prices and sources |
| 24 | zen-ai.topAsk or discussCollected: View 1 plans | Premium-quality gemini [machine translation]Group on site: 优质gemini High-availability gemini, 2 yuan per 1 dao (US dollar) [machine translation]Original: 高可用gemini, 2元1刀 | 1 | 120 | — | 30.75 | Full prices and sources |
| 26 | code0.aiAsk or discussCollected: View 1 plans | Gemini VertexAI AIstudio original-vendor API, not dumbed down, slightly lower concurrency [machine translation]Original: VertexAI AIstudio原厂接口不降智，并发略低 | 1.25 | 150 | — | 38.4375 | Full prices and sources |
| 27 | chatfire.cnAsk or discussCollected: View 1 plans | global Some international models [machine translation]Original: 部分国际模型 | 1.5 | 180 | — | 46.125 | Full prices and sources |
| 28 | ogog.aiAsk or discussCollected: View 2 plans | Gemini Gemini | 1.65 | 198 | — | 50.7375 | Full prices and sources |
| 29 | api.zhiyunai168.comAsk or discussCollected: View 1 plans 1 more site of the same companyBasis: identical homepage assets, identical quotes, same status-page name, logo or server address. Counted as one company in the ranking; this is not a legal finding. | gemini official relay premium [machine translation]Group on site: gemini 官转高级 gemini official relay t3t5key pool, supports high concurrency, stable enterprise use [machine translation]Original: gemini 官转 t3t5key池，支持高并发，企业稳定使用 | 1.75 | 210 | — | 53.8125 | Full prices and sources |
| 30 | ai.ufoai.onlineAsk or discussCollected: View 2 plans | Gemini[high quality] [machine translation]Group on site: Gemini[高质] Gemini [high quality], 71% cheaper than official [machine translation]Original: Gemini[高质]，比官方便宜71% | 2 | 240 | 0.2 | 61.5 | Full prices and sources |
| 31 | 666api.aiAsk or discussCollected: View 3 plans | Domestic deployment [machine translation]Group on site: 国产部署 Deployment [machine translation]Original: 部署 | 2.4 | 48 | — | 13.8 | Full prices and sources |
| 32 | dltokenapi.comAsk or discussCollected: View 1 plans | Antigravity Gemini [machine translation]Group on site: 反重力Gemini Has the latest gemini3.5 [machine translation]Original: 有最新得gemini3.5 | 3 | 18 | 0.3 | 6.75 | Full prices and sources |
| 33 | aizhongzhuan.comAsk or discussCollected: View 1 plans | Banana image generation [machine translation]Group on site: 香蕉生图 For Banana image generation [machine translation]Original: 香蕉生图用 | 4.5 | 27 | 0.45 | 10.125 | Full prices and sources |
| Flagged · not ranked · Older price | |||||||
| — | constreet.ccAsk or discussCollected: View 1 plans 1 more site of the same companyBasis: identical homepage assets, identical quotes, same status-page name, logo or server address. Counted as one company in the ranking; this is not a legal finding. | Gemini T3/T1 pool [machine translation]Group on site: Gemini T3/T1池 [Gemini-T3/T1 account pool] image generation + text; when resources run short, just retry/switch models [machine translation]Original: 【Gemini-T3/T1号池】可生图+文本，资源不足时直接重试/切换模型 Note: far from other providers’ prices. This price is not ranked or counted. | 20 | 60 | — | 30 | Full prices and sources |
| — | api.constreet.ccAsk or discussCollected: View 1 plans 1 more site of the same company
Basis: identical homepage assets, identical quotes, same status-page name, logo or server address. Counted as one company in the ranking; this is not a legal finding. | Gemini T3/T1 pool [machine translation]Group on site: Gemini T3/T1池 [Gemini-T3/T1 account pool] image generation + text; when resources run short, just retry/switch models [machine translation]Original: 【Gemini-T3/T1号池】可生图+文本，资源不足时直接重试/切换模型 Note: far from other providers’ prices. This price is not ranked or counted. | 20 | 60 | — | 30 | Full prices and sources |
Special groups · 5 rows · not ranked
These plans are marked as test, internal, disabled, gated by top-up or membership, or have a near-zero ratio. They may not be purchasable or stable, so they are listed separately and left out of the ranking and statistics.
- test or debug group: 5 rows
- api.tenzen.ai · Test group [machine translation]Group on site: 测试分组 · gemini-3.1-flash-image · Input 0.5 / Output 60 USD credits / 1M
- hk.apitoken.ai · sandbox · gemini-3.1-flash-image · Input 0.5 / Output 60 USD credits / 1M
- tenzen.ai · Test group [machine translation]Group on site: 测试分组 · gemini-3.1-flash-image · Input 0.5 / Output 60 USD credits / 1M
- www.amutes.com · vertex-test · gemini-3.1-flash-image · Input 0.85 / Output 102 USD credits / 1M
- 666api.ai · Test-LT [machine translation]Group on site: 测试-LT · gemini-3.1-flash-image · Input 3 / Output 60 USD credits / 1M
How this ranking works
All per-token prices: 96,427 prices from 839 sites (about 733 companies). 88,950 are ranked, from 826 sites (about 720 companies); 7,477 more are listed separately and not ranked. Prices collected up to 2026-10-10.
This model has 604 recorded prices; 151 can be compared directly (146 ranked, 5 listed separately). Not comparable yet: billed per request or another unit 163, price not parsed yet 110, tiered by rules (see Tiered prices) 74, new price under review; showing the previous one 61, ratio looks unset 28, scope of the official doc price not confirmed 12, display unit not confirmed 5
15 recent · 99 stale (older than 7 days, or not updated by this refresh) · 0 unverified timestamps. Minimum and median only count recent paid prices; older prices stay in the table. 0 zero-valued pairs are separately unverified, without proof of free eligibility. Timing does not verify payment, upstream identity or quality.
Prices are converted to site credits using each site’s published ratio. What you actually pay depends on its top-up rate. Input, output and cache prices in each row come from the same plan. Several sites run by the same company take one place in the ranking: its cheapest plan, with the other sites listed under it. We judge “same company” by identical prices, status pages or homepage code; this is not a legal finding. To see every site’s prices, choose “All plans” or filter by provider.
“Self-declared unofficial channel” means the plan name itself says “reverse-engineered” or similar. We have not verified their source or quality. Minimum and median only count regular plans.