GPT-5.1 Codex Max

Providers: 3 Unit: USD / 1M tokens Tracking: Daily Compare with Other Models ↓

Updated: 2026-06-03

As of 2026-06-03, AICostIndex tracks 3 observed provider listings for GPT-5.1 Codex Max. The lowest currently observed prices are $1.2500 for input and $10.0000 for output per 1M tokens. Cached pricing signals are also available on some provider listings. Where available, it also links to the official pricing or source page. Final billing terms should always be verified on the official vendor website.

Quick Take

GPT-5.1 Codex Max is presented here as a pricing reference page first: compare the visible lowest prices, check how many providers are currently listed, and then inspect vendor-level differences.

This page tracks 3 observed provider listings as of 2026-06-03.
The current lowest observed prices are $1.2500 for input and $10.0000 for output per 1M tokens.
Some providers also expose cached pricing, which may materially change repeat-workload costs.

Before any commercial decision, confirm the exact billing terms on the linked official source page.

Providers

Vendors providing this model with comparable snapshots.

OpenRouter

TREND UP Last check: 2026-05-26 17:56 UTC

Standard Pricing

USD / 1M

Input / 1M tokens

$1.2500

Output / 1M tokens

$10.0000

Cached Pricing

USD / 1M

Cached input / 1M

$0.1250

Cached output / 1M

$N/A

Other Pricing Modes USD / 1M

cache_read_input_token_cost$0.1250

Price History · OpenRouter

USD / 1M · Daily · UTC

30D

Vendor Detail Official Price ↗

Evidence: litellm · level=L0 · provider=openrouter

Azure OpenAI

TREND UP Last check: 2026-06-03 17:45 UTC

Standard Pricing

USD / 1M

Input / 1M tokens

$1.2500

Output / 1M tokens

$10.0000

Cached Pricing

USD / 1M

Cached input / 1M

$0.1250

Cached output / 1M

$N/A

Other Pricing Modes USD / 1M

cache_read_input_token_cost$0.1250

Price History · Azure OpenAI

USD / 1M · Daily · UTC

30D

Vendor Detail Official Price ↗

Evidence: litellm · level=L0 · provider=azure

OpenAI

TREND UP Last check: 2026-06-03 17:38 UTC

Standard Pricing

USD / 1M

Input / 1M tokens

$1.2500

Output / 1M tokens

$10.0000

Cached Pricing

USD / 1M

Cached input / 1M

$0.1250

Cached output / 1M

$N/A

Other Pricing Modes USD / 1M

cache_read_input_token_cost$0.1250

Price History · OpenAI

USD / 1M · Daily · UTC

30D

Vendor Detail Official Price

Evidence: litellm · level=L0 · provider=openai

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