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GPT-5.1 Codex Max

Name: GPT-5.1 Codex Max
Brand: OpenAI
Availability: InStock

from $1.10 at 11 providers

openai/gpt-5.1-codex-max · 11 providers · Text models ·

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https://airatecard.com/export?format=json&model=openai%2Fgpt-5.1-codex-max

API parameters and a form

Model	Variant	Provider	Input, $	Output, $	Your cost/mo, $	Subscription, $/mo	Region	Context	Max output	Accepts	Last checked
= GPT-5.1 Codex Max×		Provider aihubmix 1 aiml 1 azure 1 edenai 1 jiekou 1 kilo 1 ofox 1 opencode 1 openrouter 1 poe 1 vercel 1				Pricing pay per use 11	Region GLOBAL 1			Input file 1 image 10 pdf 2 text 10	Status Active 11
GPT-5.1-Codex-Max GPT-5.1 Codex Max		poe ↗	$1.10	$9.00	—			400K	128K	multi: image, text	4 Nov 12:26
gpt-5.1-codex-max GPT-5.1 Codex Max		jiekou ↗	$1.19	$9.50	—			400K	128K	multi: image, text	4 Nov 12:00
GPT-5.1-Codex Max GPT-5.1 Codex Max		aihubmix ↗	$1.25	$10.00	—			400K	128K	multi: image, text	4 Nov 12:00
GPT-5.1 Codex Max GPT-5.1 Codex Max		azure ↗	$1.25	$10.00	—			400K	128K	multi: image, text	4 Nov 12:08
GPT-5.1 Codex Max GPT-5.1 Codex Max	via Azure	edenai ↗	$1.25	$10.00	—		Global	272K	128K	multi: file, image, text	4 Nov 12:00
OpenAI: GPT-5.1-Codex-Max GPT-5.1 Codex Max		kilo ↗	$1.25	$10.00	—			400K	128K	multi: image, pdf, text	4 Nov 12:00
GPT-5.1 Codex Max GPT-5.1 Codex Max		ofox ↗	$1.25	$10.00	—			256K	128K	multi: image, text	4 Nov 12:00
GPT-5.1 Codex Max GPT-5.1 Codex Max		opencode ↗	$1.25	$10.00	—			400K	128K	multi: image, text	4 Nov 12:00
OpenAI: GPT-5.1-Codex-Max GPT-5.1 Codex Max		openrouter ↗	$1.25	$10.00	—			400K	128K	multi: image, text	4 Nov 12:00
GPT 5.1 Codex Max GPT-5.1 Codex Max		vercel ↗	$1.25	$10.00	—			400K	128K	multi: image, pdf, text	4 Nov 12:00
GPT-5.1 Codex Max GPT-5.1 Codex Max		aiml ↗	$2.65	$21.16	—			400K	128K	text, image/jpeg, image/png +2	4 Nov 12:00

Ranges in one field: "from-to" - "0.5-3", "-3" (up to), "128k-" (from); a colon works too. Several ticked values of one column are ORed, columns are ANDed.

Input price history, $/1M

Latest: minimum $1.10, median $1.25 (Nov 4, 2026)

The GPT family - base models: 241

gpt
gpt-astra
gpt-codex
- GPT-5-Codex 11
- GPT-5.1 Codex 16
- GPT-5.1 Codex Max 14
- GPT-5.1 Codex mini 17
- GPT-5.2 Codex 17
- GPT-5.3 Codex 25
gpt-codex-mini
- Codex Mini 1
gpt-codex-spark
- GPT-5.3 Codex Spark 4
gpt-image
- chatgpt-image-latest 1
- GPT-Image-1 9
- GPT-Image-1 Mini 8
- GPT-Image-1.5 13
- GPT-Image-2 16
- GPT Image 2.5 Flare 15
- GPT Image 2.5 Sunburst 16
gpt-luna
- GPT-5.6 Luna 29
- GPT-6 Luna 31
- OpenAI: GPT Luna Latest 3
gpt-mini
- GPT-4.1 mini 24
- GPT-4o mini 24
- GPT-4o-mini-Search 1
- GPT-4o Mini Transcribe 6
- GPT-4o Mini TTS 4
- GPT-5 Mini 28
- GPT-5.4 mini 30
- GPT-Audio Mini 7
- OpenAI: GPT Mini Latest 5
- GPT-Realtime-2.1 Mini 2
- GPT-Realtime Mini 3
gpt-nano
- GPT-4.1 nano 22
- GPT-5 Nano 27
- GPT-5.4 nano 27
gpt-oss
- GPT OSS 20B 34
- GPT OSS 120B 48
- GPT OSS Safeguard 20B 9
- GPT OSS Safeguard 120B 6
gpt-pro
- GPT-5 Pro 18
- GPT-5.2 Pro 18
- GPT-5.4 Pro 23
- GPT-5.5 Pro 19
gpt-sol
- GPT-5.6 Sol 31
- GPT-6 Sol 30
- GPT-6.1 Sol 31
- OpenAI: GPT Sol Latest 3
gpt-terra
- GPT-5.6 Terra 30
- GPT-6.1 Terra 22
- OpenAI: GPT Terra Latest 3

About the model: cost of your workload, questions, comparisons, citation

Cost of my workload → in the Tools tab: every provider of this model, cheapest first

Frequently asked questions

How much does GPT-5.1 Codex Max API cost?

From $1.10 input and $9.00 output per 1M tokens, at poe.

Which provider offers GPT-5.1 Codex Max cheapest?

poe offers the lowest price, $1.10 per 1M tokens, among 11 providers.

What is the context window of GPT-5.1 Codex Max?

400K tokens.

Compare

vs Claude Haiku 4.5 (latest) vs Claude Haiku 5.5 vs Claude Opus 4.5 (latest)

Source: AI Rate Card, https://airatecard.com/en/model/openai/gpt-5.1-codex-max, prices checked 2026-11-04