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ModelsOpenAIGPT-5.1-Codex-Max

GPT-5.1-Codex-Max

Retired: The model's withdrawal, announced by its lab or by every seller listing it · Retired Jul 23, 2026 · announced on developers.openai.com · read on Oct 31, 2026 · announced replacement: GPT-5.6 Sol (opens in a new tab)
openai/gpt-5.1-codex-max Compare →
Offers
8
Providers
6

Cheapest right now

No offer is selected as the cheapest right now: each of the lowest prices listed below says why on its row.

Not enough history yet · tracking since Sep 15, 2026See the 8 offers

Cheapest, no training on prompts

No offer with a published no-training policy for this model.

Price historyThe cheapest offer each day, against the lab's official list price when it publishes one. Each day at 00:00 UTC, the offer the API would have selected as the cheapest, with the same exclusions as /cheapest. Blended price, promotions included.

Cheapest offer and official list price, by day, 30 days
DayCheapest offerOfficial list price
2026-10-02$3.44, Azure–
2026-10-03$3.44, Azure–
2026-10-04$3.44, Azure–
2026-10-05$3.44, Azure–
2026-10-06$3.44, Azure–
2026-10-07$3.44, Azure–
2026-10-08$3.44, Azure–
2026-10-09$3.44, Azure–
2026-10-10$3.44, Azure–
2026-10-11$3.44, Azure–
2026-10-12$3.44, Azure–
2026-10-13$3.44, Azure–
2026-10-14$3.44, Azure–
2026-10-15$3.44, Azure–
2026-10-16$3.44, Azure–
2026-10-17$3.44, Azure–
2026-10-18$3.44, Azure–
2026-10-25$3.44, Azure–
2026-10-26$3.44, Azure–
2026-10-27$3.44, Azure–
2026-10-30$3.44, Azure–

Cheapest offer

Offers

8 of 8 offers

Offers for GPT-5.1-Codex-Max, one row per offer, sorted by blended price.
RankProvider · viaYou buy access through an aggregator: one account and one API that forward your requests to other providers. "Via" names the aggregator; the price is the one it charges you. When "via" says "hosted API", no aggregator is involved: the model belongs to a lab and another provider sells it.Input $/1MOutput $/1MBlended $/1MA single price that mixes input and output: 3 input tokens for 1 output token, per million tokens. It makes offers easy to rank; your real cost depends on your own mix. ContextThe maximum amount of text, counted in tokens, the model can take in and write in a single request. Past this limit, the request is refused or cut.ConditionsWhat a provider says about how it handles your data and who can sign up: training on prompts, processing region, sign-up requirements. Each comes from the provider's published documents; when nothing is published, it stays unknown.SignalsOffer
1 Azurevia Eden AI 1.25 10.00 3.44 272k Unverified. Withdrawn by its lab; this seller has not shown it for sale for 72 hours: listed, not designated cheapest
: Eden AI (opens in a new tab). No public price page for this model
2 Azurevia Kilo Gateway 1.25 10.00 3.44 400k Unverified. Withdrawn by its lab; this seller has not shown it for sale for 72 hours: listed, not designated cheapest
: Kilo Gateway (opens in a new tab). No public price page for this model
3 Glama 1.25 10.00 3.44 400k Unverified. Withdrawn by its lab; this seller has not shown it for sale for 72 hours: listed, not designated cheapest
: Glama (opens in a new tab). No public price page for this model
4 Nous Portal 1.25 10.00 3.44 400k Unverified. Withdrawn by its lab; this seller has not shown it for sale for 72 hours: listed, not designated cheapest
See pricing at Nous Portal (opens in a new tab)
5 Vercel AI Gateway 1.25 10.00 3.44 – Unverified. Withdrawn by its lab; this seller has not shown it for sale for 72 hours: listed, not designated cheapest
Go to offer at Vercel AI Gateway (opens in a new tab)
6 Azurevia OpenRouter 1.25 10.00 3.44 400k Unverified. Withdrawn by its lab; this seller has not shown it for sale for 72 hours: listed, not designated cheapest · last confirmed 31 October 2026Fee 5.5%: OpenRouter adds a 5.5% fee when you buy credits (read on openrouter.ai/pricing on Oct 31). Offers are ranked with this fee included.
Go to offer at OpenRouter (opens in a new tab)
7 ShengSuanYun 1.32 10.52 3.62 400k Unverified. Withdrawn by its lab; this seller has not shown it for sale for 72 hours: listed, not designated cheapest
: ShengSuanYun (opens in a new tab). No public price page for this model
8 NanoGPT 2.50 20.00 6.88 400k Unverified. Withdrawn by its lab; this seller has not shown it for sale for 72 hours: listed, not designated cheapest · last confirmed 31 October 2026
Go to offer at NanoGPT (opens in a new tab)

No training on promptsPrompts may be used for trainingTraining terms not published

backend not named. The router bills this price itself without naming who serves the model.

  • Azure

    $3.44

    Eden AI

    in
    $1.25
    out
    $10.00
    Context
    272k

    Prompts may be used for trainingUnverified. Withdrawn by its lab; this seller has not shown it for sale for 72 hours: listed, not designated cheapest

    Seller's site: Eden AI (opens in a new tab)No public price page for this model

  • Azure

    $3.44

    Kilo Gateway

    in
    $1.25
    out
    $10.00
    Context
    400k

    Training terms not publishedUnverified. Withdrawn by its lab; this seller has not shown it for sale for 72 hours: listed, not designated cheapest

    Seller's site: Kilo Gateway (opens in a new tab)No public price page for this model

  • Glama

    $3.44

    Glama

    in
    $1.25
    out
    $10.00
    Context
    400k

    No training on promptsUnverified. Withdrawn by its lab; this seller has not shown it for sale for 72 hours: listed, not designated cheapestbackend not named: The router bills this price itself without naming who serves the model.

    Seller's site: Glama (opens in a new tab)No public price page for this model

  • Nous Portal

    $3.44

    Nous Portal

    in
    $1.25
    out
    $10.00
    Context
    400k

    Prompts may be used for trainingUnverified. Withdrawn by its lab; this seller has not shown it for sale for 72 hours: listed, not designated cheapestbackend not named: The router bills this price itself without naming who serves the model.

    See pricing See pricing at Nous Portal (opens in a new tab)via Nous Portal

  • Vercel AI Gateway

    $3.44

    Vercel AI Gateway

    in
    $1.25
    out
    $10.00
    Context
    –

    No training on promptsUnverified. Withdrawn by its lab; this seller has not shown it for sale for 72 hours: listed, not designated cheapest

    Go to offer Go to offer at Vercel AI Gateway (opens in a new tab)via Vercel AI Gateway

  • Azure

    $3.44

    OpenRouter

    in
    $1.25
    out
    $10.00
    Context
    400k

    No training on promptsUnverified. Withdrawn by its lab; this seller has not shown it for sale for 72 hours: listed, not designated cheapest · last confirmed 31 October 2026Fee 5.5%: OpenRouter adds a 5.5% fee when you buy credits (read on openrouter.ai/pricing on Oct 31). Offers are ranked with this fee included.

    Go to offer Go to offer at OpenRouter (opens in a new tab)via OpenRouter

  • ShengSuanYun

    $3.62

    ShengSuanYun

    in
    $1.32
    out
    $10.52
    Context
    400k

    Training terms not publishedUnverified. Withdrawn by its lab; this seller has not shown it for sale for 72 hours: listed, not designated cheapest

    Seller's site: ShengSuanYun (opens in a new tab)No public price page for this model

  • NanoGPT

    $6.88

    NanoGPT

    in
    $2.50
    out
    $20.00
    Context
    400k

    No training on promptsUnverified. Withdrawn by its lab; this seller has not shown it for sale for 72 hours: listed, not designated cheapest · last confirmed 31 October 2026

    Go to offer Go to offer at NanoGPT (opens in a new tab)via NanoGPT

Blended = (3 × input + output) / 4, per million tokens. Prices in USD, converted at the ECB rate when the provider bills in another currency.

Method

Related models

Announced replacement GPT-5.6 Sol

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Also works in Cursor and Codex: see the MCP page.