OpenAI · gpt-5.1-codex

Provider prices, cheapest first

OpenAI · gpt-5.1-codex official price: not yet recorded. Cheapest inference provider: OpenRouter, input 1.25, output 10 USD per million tokens. Cheapest relay: llms.best, group "Codex" 1.0313 USD_CREDIT per million total tokens (credit price, not cash, observed 2026-10-16). 68 sites have comparable prices; 120 sites list this model.Relay blended price uses 75% input and 25% output.

Price ranges 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 5.1563 · highest 35.131 · 268 quotes USD / per million tokens, site credit

Relay CNY credit prices · Lowest 3.0938 · median 7.6258 · highest 24.406 · 24 quotes CNY / per million tokens, site credit

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
OpenRouter · Aggregator	1.25	10	0.13	—	USD / 1M tokens	2026-10-17	Official source

Unit: USD credits per 1M tokens. These are site-credit prices; actual cost depends on each site’s top-up rate.

Blended price = input × 75% + output × 25%, without cache.

Price range: lowest 1.0313 · median 5.1563 · highest 35.131 (268 quotes, USD credits per million total tokens)

sites have comparable prices68120 sites list this model; approximately 42 operators

Lowest input price0.375USD credits / 1M

Median of each provider’s lowest price1.25USD credits / 1M

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
Recent price
144	api.bltcy.topAsk or discussCollected: 16 Oct 2026, 07:39 UTC Collected this cycle View 18 plans 2 more sites of the same company api.bltcy.ai · main site one-api.bltcy.top Basis: identical quotes, same status-page name, logo or server address. Counted as one company in the ranking; this is not a legal finding.	AZ-premium quality [machine translation]Group on site: AZ-优质 Name on site: gpt-5.1-codex-high Pure Azure-premium quality, supports o1, o3 [machine translation]Original: 纯Azure-优质，支持o1、o3 Operator pending verification	2.625	21	0.2625	7.2188Median price ÷ this price: 0.7×	Full prices and sources
144	one-api.bltcy.topAsk or discussCollected: 16 Oct 2026, 07:49 UTC Collected this cycle View 18 plans 2 more sites of the same company api.bltcy.ai · main site api.bltcy.top Basis: identical quotes, same status-page name, logo or server address. Counted as one company in the ranking; this is not a legal finding.	AZ-premium quality [machine translation]Group on site: AZ-优质 Name on site: gpt-5.1-codex-medium Pure Azure-premium quality, supports o1, o3 [machine translation]Original: 纯Azure-优质，支持o1、o3 Operator pending verification	2.625	21	0.2625	7.2188Median price ÷ this price: 0.7×	Full prices and sources
144	one-api.bltcy.topAsk or discussCollected: 16 Oct 2026, 07:49 UTC Collected this cycle View 18 plans 2 more sites of the same company api.bltcy.ai · main site api.bltcy.top Basis: identical quotes, same status-page name, logo or server address. Counted as one company in the ranking; this is not a legal finding.	AZ-premium quality [machine translation]Group on site: AZ-优质 Name on site: gpt-5.1-codex-high Pure Azure-premium quality, supports o1, o3 [machine translation]Original: 纯Azure-优质，支持o1、o3 Operator pending verification	2.625	21	0.2625	7.2188Median price ÷ this price: 0.7×	Full prices and sources
154	nexaxis.aiAsk or discussCollected: 16 Oct 2026, 07:49 UTC Collected this cycle View 2 plans	ChatGpt_AZ-5.6 5.6-only group [machine translation]Original: 5.6专用分组 Operator pending verification	2.75	22	0.275	7.5625Median price ÷ this price: 0.7×	Full prices and sources
155	poloai.topAsk or discussCollected: 16 Oct 2026, 07:50 UTC Collected this cycle View 15 plans 2 more sites of the same company poloapi.top xy.poloapi.com Basis: identical quotes, same status-page name, logo or server address. Counted as one company in the ranking; this is not a legal finding.	fast-az Name on site: gpt-5.1-codex-medium Microsoft Azure stable resources [machine translation]Original: 微软Azure稳定资源 Operator pending verification	2.875	23	0.2875	7.9063Median price ÷ this price: 0.7×	Full prices and sources
155	poloai.topAsk or discussCollected: 16 Oct 2026, 07:50 UTC Collected this cycle View 15 plans 2 more sites of the same company poloapi.top xy.poloapi.com Basis: identical quotes, same status-page name, logo or server address. Counted as one company in the ranking; this is not a legal finding.	fast-az Microsoft Azure stable resources [machine translation]Original: 微软Azure稳定资源 Operator pending verification	2.875	23	0.2875	7.9063Median price ÷ this price: 0.7×	Full prices and sources
155	poloai.topAsk or discussCollected: 16 Oct 2026, 07:50 UTC Collected this cycle View 15 plans 2 more sites of the same company poloapi.top xy.poloapi.com Basis: identical quotes, same status-page name, logo or server address. Counted as one company in the ranking; this is not a legal finding.	fast-az Name on site: gpt-5.1-codex-high Microsoft Azure stable resources [machine translation]Original: 微软Azure稳定资源 Operator pending verification	2.875	23	0.2875	7.9063Median price ÷ this price: 0.7×	Full prices and sources
155	poloapi.topAsk or discussCollected: 16 Oct 2026, 07:50 UTC Collected this cycle View 15 plans 2 more sites of the same company poloai.top · main site xy.poloapi.com Basis: identical quotes, same status-page name, logo or server address. Counted as one company in the ranking; this is not a legal finding.	fast-az Name on site: gpt-5.1-codex-medium Microsoft Azure stable resources [machine translation]Original: 微软Azure稳定资源 Operator pending verification	2.875	23	0.2875	7.9063Median price ÷ this price: 0.7×	Full prices and sources
155	poloapi.topAsk or discussCollected: 16 Oct 2026, 07:50 UTC Collected this cycle View 15 plans 2 more sites of the same company poloai.top · main site xy.poloapi.com Basis: identical quotes, same status-page name, logo or server address. Counted as one company in the ranking; this is not a legal finding.	fast-az Name on site: gpt-5.1-codex-high Microsoft Azure stable resources [machine translation]Original: 微软Azure稳定资源 Operator pending verification	2.875	23	0.2875	7.9063Median price ÷ this price: 0.7×	Full prices and sources
155	poloapi.topAsk or discussCollected: 16 Oct 2026, 07:50 UTC Collected this cycle View 15 plans 2 more sites of the same company poloai.top · main site xy.poloapi.com Basis: identical quotes, same status-page name, logo or server address. Counted as one company in the ranking; this is not a legal finding.	fast-az Microsoft Azure stable resources [machine translation]Original: 微软Azure稳定资源 Operator pending verification	2.875	23	0.2875	7.9063Median price ÷ this price: 0.7×	Full prices and sources
155	xy.poloapi.comAsk or discussCollected: 16 Oct 2026, 07:54 UTC Collected this cycle View 15 plans 2 more sites of the same company poloai.top · main site poloapi.top Basis: identical quotes, same status-page name, logo or server address. Counted as one company in the ranking; this is not a legal finding.	fast-az Name on site: gpt-5.1-codex-high Microsoft Azure stable resources [machine translation]Original: 微软Azure稳定资源 Operator pending verification	2.875	23	0.2875	7.9063Median price ÷ this price: 0.7×	Full prices and sources
155	xy.poloapi.comAsk or discussCollected: 16 Oct 2026, 07:54 UTC Collected this cycle View 15 plans 2 more sites of the same company poloai.top · main site poloapi.top Basis: identical quotes, same status-page name, logo or server address. Counted as one company in the ranking; this is not a legal finding.	fast-az Name on site: gpt-5.1-codex-medium Microsoft Azure stable resources [machine translation]Original: 微软Azure稳定资源 Operator pending verification	2.875	23	0.2875	7.9063Median price ÷ this price: 0.7×	Full prices and sources
155	xy.poloapi.comAsk or discussCollected: 16 Oct 2026, 07:54 UTC Collected this cycle View 15 plans 2 more sites of the same company poloai.top · main site poloapi.top Basis: identical quotes, same status-page name, logo or server address. Counted as one company in the ranking; this is not a legal finding.	fast-az Microsoft Azure stable resources [machine translation]Original: 微软Azure稳定资源 Operator pending verification	2.875	23	0.2875	7.9063Median price ÷ this price: 0.7×	Full prices and sources
164	www.cybersol.netAsk or discussCollected: 16 Oct 2026, 07:53 UTC Collected this cycle View 2 plans	GPT Premium Openai official enterprise account direct connection, high availability. Images unaffected. [machine translation]Original: Openai官方企业账号直连，高可用。出图无影响。 Operator pending verification	3	24	0.3	8.25Median price ÷ this price: 0.6×	Full prices and sources
165	api.zhiyunai168.comAsk or discussCollected: 16 Oct 2026, 07:43 UTC Collected this cycle View 2 plans 1 more site of the same company api1.zhiyunai168.com 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.	Azure premium T6 [machine translation]Group on site: Azure高级T6 Azure premium T6 account, supports high concurrency, high concurrency, supports gpt-5.6,gpt-6-astra [machine translation]Original: Azure高级T6账户，支持高并发，高并发，支持gpt-5.6,gpt-6-astra Operator pending verification	3.125	25	—	8.5938Median price ÷ this price: 0.6×	Full prices and sources
165	api1.zhiyunai168.comAsk or discussCollected: 16 Oct 2026, 07:43 UTC Collected this cycle View 2 plans 1 more site of the same company api.zhiyunai168.com · main site 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.	Azure premium T6 [machine translation]Group on site: Azure高级T6 Azure premium T6 account, supports high concurrency, high concurrency, supports gpt-5.6,gpt-6-astra [machine translation]Original: Azure高级T6账户，支持高并发，高并发，支持gpt-5.6,gpt-6-astra Operator pending verification	3.125	25	—	8.5938Median price ÷ this price: 0.6×	Full prices and sources
167	aigcbest.topAsk or discussCollected: 16 Oct 2026, 07:37 UTC Collected this cycle View 2 plans 2 more sites of the same company api.ifopen.ai api2.aigcbest.top Basis: identical quotes, same status-page name, logo or server address. Counted as one company in the ranking; this is not a legal finding.	All-model dedicated line channel [machine translation]Group on site: 全模型专线渠道 👍 Highest concurrency guaranteed on all models \| stable 24 hours [machine translation]Original: 👍 全模型最高并发保证 \| 24小时稳定 Operator pending verification	3.25	26	0.325	8.9375Median price ÷ this price: 0.6×	Full prices and sources
167	api.ifopen.aiAsk or discussCollected: 16 Oct 2026, 07:40 UTC Collected this cycle View 2 plans 2 more sites of the same company aigcbest.top · main site api2.aigcbest.top Basis: identical quotes, same status-page name, logo or server address. Counted as one company in the ranking; this is not a legal finding.	All-model dedicated line channel [machine translation]Group on site: 全模型专线渠道 👍 Highest concurrency guaranteed on all models \| stable 24 hours [machine translation]Original: 👍 全模型最高并发保证 \| 24小时稳定 Operator pending verification	3.25	26	0.325	8.9375Median price ÷ this price: 0.6×	Full prices and sources
167	api2.aigcbest.topAsk or discussCollected: 16 Oct 2026, 07:43 UTC Collected this cycle View 2 plans 2 more sites of the same company aigcbest.top · main site api.ifopen.ai Basis: identical quotes, same status-page name, logo or server address. Counted as one company in the ranking; this is not a legal finding.	All-model dedicated line channel [machine translation]Group on site: 全模型专线渠道 👍 Highest concurrency guaranteed on all models \| stable 24 hours [machine translation]Original: 👍 全模型最高并发保证 \| 24小时稳定 Operator pending verification	3.25	26	0.325	8.9375Median price ÷ this price: 0.6×	Full prices and sources
170	sg.uiuiapi.comAsk or discussCollected: 16 Oct 2026, 07:51 UTC Collected this cycle View 2 plans	AZ-T3-Openai Name on site: gpt-5.1-codex-high AzureGPT models have higher stability [machine translation]Original: AzureGPT模型稳定性更高 Operator pending verification	3.75	22.5	—	8.4375Median price ÷ this price: 0.6×	Full prices and sources
170	ai.comfly.orgAsk or discussCollected: 16 Oct 2026, 07:36 UTC Collected this cycle View 18 plans 1 more site of the same company ai.t8star.org Basis: identical quotes. Counted as one company in the ranking; this is not a legal finding.	ssvip Pure OpenAI, special-price group [machine translation]Original: 纯OpenAI，特价分组 Operator pending verification	3.75	30	0.375	10.313Median price ÷ this price: 0.5×	Full prices and sources
170	api.bltcy.aiAsk or discussCollected: 16 Oct 2026, 07:39 UTC Collected this cycle View 18 plans 2 more sites of the same company api.bltcy.top one-api.bltcy.top Basis: identical quotes, same status-page name, logo or server address. Counted as one company in the ranking; this is not a legal finding.	ssvip Pure OpenAI, special-price group [machine translation]Original: 纯OpenAI，特价分组 Operator pending verification	3.75	30	0.375	10.313Median price ÷ this price: 0.5×	Full prices and sources
170	sg.uiuiapi.comAsk or discussCollected: 16 Oct 2026, 07:51 UTC Collected this cycle View 2 plans	AZ-T3-Openai Name on site: gpt-5.1-codex-medium AzureGPT models have higher stability [machine translation]Original: AzureGPT模型稳定性更高 Operator pending verification	3.75	30	—	10.313Median price ÷ this price: 0.5×	Full prices and sources
170	xinsuanai.comAsk or discussCollected: 16 Oct 2026, 07:53 UTC Collected this cycle View 4 plans	vip vip group [machine translation]Original: vip分组 Operator pending verification	3.75	30	—	10.313Median price ÷ this price: 0.5×	Full prices and sources
170	ai.t8star.orgAsk or discussCollected: 16 Oct 2026, 07:36 UTC Collected this cycle View 18 plans 1 more site of the same company ai.comfly.org · main site Basis: identical quotes. Counted as one company in the ranking; this is not a legal finding.	ssvip Pure OpenAI, special-price group [machine translation]Original: 纯OpenAI，特价分组 Operator pending verification	3.75	30	0.375	10.313Median price ÷ this price: 0.5×	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.

test or debug group: 1 rows

test-api.apiqik.online · openai · gpt-5.1-codex · Input 0.375 / Output 3 USD credits / 1M

View all 1 rows →

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 612 recorded prices; 321 can be compared directly (320 ranked, 1 listed separately). Not comparable yet: price not parsed yet 150, scope of the official doc price not confirmed 72, ratio looks unset 45, display unit not confirmed 6, tiered by rules (see Tiered prices) 2, new price under review; showing the previous one 1

268 recent · 26 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-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.

Full methodology →

Sources not accepted this cycle and reasons

FAQ

Which API is cheapest for OpenAI · gpt-5.1-codex?

llms.best, group "Codex", 1.0313 USD credit per million total tokens, observed 2026-10-16. 68 sites have comparable prices.

How do I use OpenAI · gpt-5.1-codex in Claude Code or Codex?

Install Grandet Skill, then say "Connect the cheapest OpenAI · gpt-5.1-codex API to Claude Code for me". Install Skill →