API PRICES
OpenAI · gpt-5.1
Tiered prices, cheapest first
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
Relay USD credit prices · Lowest 1.0313 · median 3.4375 · highest 20.625 · 58 quotes USD / per million tokens, site credit
Relay CNY credit prices · Lowest 1.5469 · median 5.1563 · highest 41.475 · 17 quotes CNY / per million tokens, site credit
Uses the standard tier (shortest context, base price). Full rules are in Details.
Unit: USD credits per 1M tokens. These are site-credit prices; actual cost depends on each site’s top-up rate.
| # | Provider | Plan / conditions | Input ↑USD credits / 1M | Output USD credits / 1M | Cache readUSD credits / 1M | BlendedUSD credits / 1M | Details |
|---|---|---|---|---|---|---|---|
| Recent price | |||||||
| 01 | wolfai.topAsk or discussCollected: Collected this cycle View 5 plans | user Standard tier · standard Claude Code premium reverse-engineered blend | 1M context + 5m cache [machine translation]Original: Claude Code 优质逆向混合｜1M 上下文+5m 缓存 Operator pending verification | 0.5 | 4 | 0.05 | 1.375 | Full prices and sources |
| 02 | home.moleapi.comAsk or discussCollected: Collected this cycle View 2 plans | discount Standard tier · base Special price [machine translation]Original: 特价 Operator pending verification | 1 | 8 | 0.1 | 2.75 | Full prices and sources |
| 03 | api.101aix.comAsk or discussCollected: Collected this cycle View 2 plans | OpenAI Standard tier · standard · 8 tiers OpenAI|pure OpenAI official native KEY [machine translation]Original: OpenAI|纯OpenAI官方原生KEY Operator pending verification | 1.25 | 10 | 0.125 | 3.4375 | Full prices and sources |
| 03 | lightingtheword.comAsk or discussCollected: Collected this cycle View 1 plans | default Standard tier · standard Default group [machine translation]Original: 默认分组 Operator pending verification | 1.25 | 10 | 0.125 | 3.4375 | Full prices and sources |
| 05 | nexaxis.aiAsk or discussCollected: Collected this cycle View 3 plans | ChatGPT_AZ Standard tier · standard ChatGPT_AZ Operator pending verification | 1.625 | 13 | 0.1625 | 4.4688 | Full prices and sources |
| 06 | witflow.aiAsk or discussCollected: Collected this cycle View 1 plans 1 more site 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. | OpenAI-AZ-all models [machine translation]Group on site: OpenAI-AZ-全模型 Standard tier · standard az resources only [machine translation]Original: 只有az资源 Operator pending verification | 5 | 40 | 0.5 | 13.75 | Full prices and sources |
Special groups · 1 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.
- marked display-only or do-not-select: 1 rows
- ff.zwenooo.link · ds4 · gpt-5.1 · Input 1.25 / Output 10 USD credits / 1M
Related variants · 1 rows · not ranked
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.
- vercel/openai/gpt-5.1-thinking (-thinking · thinking edition): 1 rows
- ai.bytonsec.com · VERCEL · vercel/openai/gpt-5.1-thinking · Input 7.5 / Output 60 USD credits / 1M
How this ranking works
All tiered prices: 30,485 prices from 636 sites (about 555 companies). 28,608 are ranked, from 629 sites (about 548 companies); 1,877 more are listed separately and not ranked. Prices collected up to 2026-10-17.
This model has 23 tiered prices; 23 can be compared directly (21 ranked, 2 listed separately).
15 recent · 0 stale (older than 10 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 values are separately unverified, without proof of free eligibility.
For tiered models (e.g. longer context costs more) we use the standard tier: shortest context, normal service tier, base price without promotions. Prices that change with time of day or request options are listed separately with the reason. See “Details” for the full rules.
Prices are converted to site credits using each site’s published ratio and display multiplier. What you actually pay depends on its top-up rate. 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.
Sources not accepted this cycle and reasons
FAQ
Which API is cheapest for OpenAI · gpt-5.1?
llms.best, group "Codex", 1.0313 USD credit per million total tokens, observed 2026-10-16. 100 sites have comparable 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 →