Model

GPT-5.1 Codex Max

Name: GPT-5.1 Codex Max
Brand: openai

Coding-optimized GPT model for repository edits, reviews, and agentic software work

13 providers · 13 listingsreleased Nov 13, 2025knowledge cutoff 2024-09-30closed weights

$1.10

lowest input /M · Poe

lowest output /M · Poe

400K

context window

128K

max output

Compare providers (sorted by listed input price)

13 providers list GPT-5.1 Codex Max. The cheapest full-context option is Poe at $1.1/$9 per M. Listed prices span 2.2× for identical weights.

			Cache read /M	Cache write /M		Capabilities
Poe openai/gpt-5.1-codex-max	$1.10	$9	$0.11	—	400K	reasoningtoolsno structuredvision	Dec 8, 2025
Jiekou.AI gpt-5.1-codex-max	$1.13	$9	—	—	400K	reasoningtoolsstructuredvision	Jan 1, 2026
DigitalOcean openai-gpt-5.1-codex-max	$1.25	$10	$0.125	—	400K	reasoningtoolsstructuredvision	Nov 13, 2025
Vivgrid gpt-5.1-codex-max	$1.25	$10	$0.125	—	400K	reasoningtoolsstructuredno vision	Nov 13, 2025
Vercel AI Gateway openai/gpt-5.1-codex-max	$1.25	$10	$0.125	—	400K	reasoningtoolsstructuredvision	Nov 13, 2025
Kilo Gateway openai/gpt-5.1-codex-max	$1.25	$10	$0.125	—	400K	reasoningtoolsstructuredvision	Nov 13, 2025
Azure gpt-5.1-codex-max	$1.25	$10	$0.125	—	400K	reasoningtoolsstructuredvision	Nov 13, 2025
Abacus gpt-5.1-codex-max	$1.25	$10	—	—	400K	reasoningtoolsstructuredvision	Nov 13, 2025
OpenCode Zen gpt-5.1-codex-max	$1.25	$10	$0.125	—	400K	reasoningtoolsstructuredvision	Nov 13, 2025
OpenRouter openai/gpt-5.1-codex-max	$1.25	$10	$0.125	—	400K	reasoningtoolsstructuredvision	Nov 13, 2025
Ofox openai/gpt-5.1-codex-max	$1.25	$10	$0.13	—	256K	reasoningtoolsstructuredvision	Nov 13, 2025
Eden AI azure/gpt-5.1-codex-max	$1.25	$10	$0.125	—	272K	reasoningtoolsstructuredvision	Nov 13, 2025
NanoGPT openai/gpt-5.1-codex-max	$2.50	$20	$0.25	—	400K	reasoningtoolsstructuredvision	Nov 13, 2025

Best price history

Daily lowest published price across live providers. A lower line is better for the buyer.

Best input /M: $1.10unchanged
Best output /M: $9unchanged
Provider coverage: 13; 14 at the start · 24 snapshots

Published best prices are unchanged.

24 daily snapshots collected from Aug 21, 2026 through Sep 14, 2026. A price chart will appear after the first real move.

Price badge

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Live SVG, regenerated on every hourly sync — paste it into a README to always show the current cheapest listed price. Updates when prices change; no build step needed on your side.

Recent changes

Changelog →

capabilityvia edenai · Sep 7, 2026
- name: GPT-5.1 Codex Max → GPT-5.1 Codex Max (Azure)
removedvia orcarouter · Aug 28, 2026

Prices are per million tokens (USD). “—” means the provider does not publicly list a price for this model. Data from models.dev; verify with the provider before purchasing.