API PRICES
OpenAI · gpt-5.1
Provider prices, cheapest first
OpenAI · gpt-5.1 official price: input 1.25, output 10.00 USD per million tokens (OpenAI, observed 2026-10-17). Cheapest inference provider: OpenRouter, input 1.25, output 10 USD per million tokens. 100 sites have comparable prices; 177 sites list this model.
Price ranges per million tokens
Official cash prices · Lowest 3.4375 · median 3.4375 · highest 3.4375 · 1 quotes USD / per million tokens
Inference provider cash prices · Lowest 3.4375 · median 3.4375 · highest 3.4375 · 1 quotes USD / per million tokens
Official price
| Provider | Input | Output | Cache read | Cache write | Unit | Observed | Conditions and source |
|---|---|---|---|---|---|---|---|
| OpenAI | 1.25 | 10.00 | 0.125 | — | USD / 1M tokens | Official source |
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 | 1.25 | 10 | 0.125 | — | USD / 1M tokens | Official source | Input 0% · Output 0% |
Unit: USD credits per 1M tokens. These are site-credit prices; actual cost depends on each site’s top-up rate.
Showing: Related variants。These are special editions of the model (thinking, max, search, batch, long context, free, etc.). They are priced differently from the base model, so they are listed separately and not ranked. Names that only add an effort level such as low, high or nothinking are compared with the base model. Back to the default ranking
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Browse all providersPrice range: lowest — · median — · highest — (0 quotes, USD credits per million total tokens)
Relays
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 |
|---|---|---|---|---|---|---|---|
| Related variants · not ranked · Recent price | |||||||
| — | ai.comfly.orgAsk or discussCollected: Collected this cycle View 2 plans 1 more site of the same companyBasis: identical quotes. Counted as one company in the ranking; this is not a legal finding. | vip Name on site: gpt-5.1-thinking Reverse-engineered, usage-based (vip) [machine translation]Original: 逆向按量(vip) Related variant: gpt-5.1-thinking (-thinking · thinking edition) Operator pending verification | 1 | 8 | — | 2.75 | Full prices and sources |
| — | api.bltcy.aiAsk or discussCollected: Collected this cycle View 2 plans 2 more sites of the same companyBasis: identical quotes, same status-page name, logo or server address. Counted as one company in the ranking; this is not a legal finding. | vip Name on site: gpt-5.1-thinking Reverse-engineered, usage-based (vip) [machine translation]Original: 逆向按量(vip) Related variant: gpt-5.1-thinking (-thinking · thinking edition) Operator pending verification | 1 | 8 | — | 2.75 | Full prices and sources |
| — | ai.t8star.orgAsk or discussCollected: Collected this cycle View 2 plans 1 more site of the same company
Basis: identical quotes. Counted as one company in the ranking; this is not a legal finding. | vip Name on site: gpt-5.1-thinking Reverse-engineered, usage-based (vip) [machine translation]Original: 逆向按量(vip) Related variant: gpt-5.1-thinking (-thinking · thinking edition) Operator pending verification | 1 | 8 | — | 2.75 | Full prices and sources |
| — | api.bltcy.topAsk or discussCollected: Collected this cycle View 2 plans 2 more sites of the same company
Basis: identical quotes, same status-page name, logo or server address. Counted as one company in the ranking; this is not a legal finding. | vip Name on site: gpt-5.1-thinking Reverse-engineered, usage-based (vip) [machine translation]Original: 逆向按量(vip) Related variant: gpt-5.1-thinking (-thinking · thinking edition) Operator pending verification | 1 | 8 | — | 2.75 | Full prices and sources |
| — | one-api.bltcy.topAsk or discussCollected: Collected this cycle View 2 plans 2 more sites of the same company
Basis: identical quotes, same status-page name, logo or server address. Counted as one company in the ranking; this is not a legal finding. | vip Name on site: gpt-5.1-thinking Reverse-engineered, usage-based (vip) [machine translation]Original: 逆向按量(vip) Related variant: gpt-5.1-thinking (-thinking · thinking edition) Operator pending verification | 1 | 8 | — | 2.75 | Full prices and sources |
| — | ai.comfly.orgAsk or discussCollected: Collected this cycle View 2 plans 1 more site of the same companyBasis: identical quotes. Counted as one company in the ranking; this is not a legal finding. | default Name on site: gpt-5.1-thinking Default group [machine translation]Original: 默认分组 Related variant: gpt-5.1-thinking (-thinking · thinking edition) Operator pending verification | 1.25 | 10 | — | 3.4375 | Full prices and sources |
| — | api.bltcy.aiAsk or discussCollected: Collected this cycle View 2 plans 2 more sites of the same companyBasis: identical quotes, same status-page name, logo or server address. Counted as one company in the ranking; this is not a legal finding. | default Name on site: gpt-5.1-thinking Default group [machine translation]Original: 默认分组 Related variant: gpt-5.1-thinking (-thinking · thinking edition) Operator pending verification | 1.25 | 10 | — | 3.4375 | Full prices and sources |
| — | api.hopeai.ccAsk or discussCollected: Collected this cycle View 2 plans | default Name on site: gpt-5.1-thinking Default group [machine translation]Original: 默认分组 Related variant: gpt-5.1-thinking (-thinking · thinking edition) Operator pending verification | 1.25 | 10 | — | 3.4375 | Full prices and sources |
| — | api.xhuoai.comAsk or discussCollected: Collected this cycle View 2 plans | default Name on site: gpt-5.1-thinking Default group, supports all common models, OpenAI special-price channel (AZ Microsoft channel) Claude Code, Gemini stable channel (GCP/Velax), top value-for-money choice, 20% of list price, rate multiplier 1.0 [machine translation]Original: 默认分组，支持所有常用模型,OpenAI特价渠道（AZ微软渠道）Claude Code,Gemini稳定渠道（GCP/Velax），性价比首选，2折，倍率1.0 Related variant: gpt-5.1-thinking (-thinking · thinking edition) Operator pending verification | 1.25 | 10 | — | 3.4375 | Full prices and sources |
| — | api.xistree.hkAsk or discussCollected: Collected this cycle View 1 plans | default Name on site: gpt-5.1-thinking Default group [machine translation]Original: 默认分组 Related variant: gpt-5.1-thinking (-thinking · thinking edition) Operator pending verification | 1.25 | 10 | — | 3.4375 | Full prices and sources |
| — | ai.t8star.orgAsk or discussCollected: Collected this cycle View 2 plans 1 more site of the same company
Basis: identical quotes. Counted as one company in the ranking; this is not a legal finding. | default Name on site: gpt-5.1-thinking Default group [machine translation]Original: 默认分组 Related variant: gpt-5.1-thinking (-thinking · thinking edition) Operator pending verification | 1.25 | 10 | — | 3.4375 | Full prices and sources |
| — | api.bltcy.topAsk or discussCollected: Collected this cycle View 2 plans 2 more sites of the same company
Basis: identical quotes, same status-page name, logo or server address. Counted as one company in the ranking; this is not a legal finding. | default Name on site: gpt-5.1-thinking Default group [machine translation]Original: 默认分组 Related variant: gpt-5.1-thinking (-thinking · thinking edition) Operator pending verification | 1.25 | 10 | — | 3.4375 | Full prices and sources |
| — | one-api.bltcy.topAsk or discussCollected: Collected this cycle View 2 plans 2 more sites of the same company
Basis: identical quotes, same status-page name, logo or server address. Counted as one company in the ranking; this is not a legal finding. | default Name on site: gpt-5.1-thinking Default group [machine translation]Original: 默认分组 Related variant: gpt-5.1-thinking (-thinking · thinking edition) Operator pending verification | 1.25 | 10 | — | 3.4375 | Full prices and sources |
| — | api.hopeai.ccAsk or discussCollected: Collected this cycle View 2 plans | Azure Name on site: gpt-5.1-thinking Related variant: gpt-5.1-thinking (-thinking · thinking edition) Operator pending verification | 2.25 | 18 | — | 6.1875 | Full prices and sources |
| — | api.xhuoai.comAsk or discussCollected: Collected this cycle View 2 plans | Enterprise channel [machine translation]Group on site: 企业渠道 Name on site: gpt-5.1-thinking OpenAI/Claude enterprise-grade channel, top choice for top speed and stability, ultra-high concurrency, features identical to official, 5.6/10 of list price, rate multiplier 4.0 [machine translation]Original: OpenAI/Claude企业级渠道，追求极速稳定首选，超高并发，功能与官方完全一致，5.6折，倍率4.0 Related variant: gpt-5.1-thinking (-thinking · thinking edition) Operator pending verification | 5 | 40 | — | 13.75 | Full prices and sources |
| — | gptapi.asiaAsk or discussCollected: Collected this cycle View 1 plans 2 more sites 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. | enterprise Name on site: gpt-5.1-thinking Enterprise channel [machine translation]Original: 企业通道 Related variant: gpt-5.1-thinking (-thinking · thinking edition) Operator pending verification | 8.82 | 70.56 | — | 24.255 | Full prices and sources |
| — | cn.gptapi.asiaAsk or discussCollected: Collected this cycle View 1 plans 2 more sites 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. | enterprise Name on site: gpt-5.1-thinking Enterprise channel [machine translation]Original: 企业通道 Related variant: gpt-5.1-thinking (-thinking · thinking edition) Operator pending verification | 8.82 | 70.56 | — | 24.255 | Full prices and sources |
| — | yutoapi.comAsk or discussCollected: Collected this cycle View 1 plans 2 more sites 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. | enterprise Name on site: gpt-5.1-thinking Enterprise channel [machine translation]Original: 企业通道 Related variant: gpt-5.1-thinking (-thinking · thinking edition) Operator pending verification | 8.82 | 70.56 | — | 24.255 | Full prices and sources |
| Related variants · not ranked · Older price | |||||||
| — | kg-api.cloudAsk or discussCollected: Carried previous price Not updated this time; showing the previous price View 2 plans | vip Name on site: gpt-5.1-thinking Reverse-engineered, usage-based (vip) [machine translation]Original: 逆向按量(vip) Related variant: gpt-5.1-thinking (-thinking · thinking edition) Operator pending verification | 1 | 8 | — | 2.75 | Full prices and sources |
| — | kg-api.cloudAsk or discussCollected: Carried previous price Not updated this time; showing the previous price View 2 plans | default Name on site: gpt-5.1-thinking Default group [machine translation]Original: 默认分组 Related variant: gpt-5.1-thinking (-thinking · thinking edition) Operator pending verification | 1.25 | 10 | — | 3.4375 | Full prices and sources |
How this ranking works
All per-token prices: 97,455 prices from 871 sites (about 765 companies). 89,631 are ranked, from 861 sites (about 755 companies); 7,824 more are listed separately and not ranked. Prices collected up to 2026-10-17.
This model has 792 recorded prices; 375 can be compared directly (352 ranked, 23 listed separately). Not comparable yet: price not parsed yet 265, scope of the official doc price not confirmed 60, ratio looks unset 40, tiered by rules (see Tiered prices) 23, display unit not confirmed 14, billed per request or another unit 3
18 recent · 2 stale (older than 10 days, or not updated by this refresh) · 0 unverified timestamps. No recent prices to summarize in this group. 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.
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FAQ
Which API is cheapest for OpenAI · gpt-5.1?
No valid quotes within 10 days. Older quotes are listed as reference prices.
What is the official price for OpenAI · gpt-5.1?
Input 1.25, output 10 USD per million tokens, checked 2026-10-17. Lowest inference provider: OpenRouter, input 1.25, output 10 USD per million tokens. Input 0% higher than official.
How do I use OpenAI · gpt-5.1 in Claude Code or Codex?
Install Grandet Skill, then say "Connect the cheapest OpenAI · gpt-5.1 API to Claude Code for me". Install Skill →