Model

GPT-5.1 Codex

Name: GPT-5.1 Codex
Brand: openai

Codex GPT for repository edits, code review, and practical software agents

19 providers · 19 listingsreleased Nov 13, 2025knowledge cutoff 2024-09-30closed weights

$1.07

lowest input /M · OpenCode Zen

$8.50

lowest output /M · OpenCode Zen

400K

context window

272K

max output

Compare providers (sorted by listed input price)

19 providers list GPT-5.1 Codex. The cheapest full-context option is OpenCode Zen at $1.07/$8.5 per M.

			Cache read /M	Cache write /M		Capabilities
OpenCode Zen gpt-5.1-codex	$1.07	$8.50	$0.107	—	400K	reasoningtoolsstructuredvision	Nov 13, 2025
Poe openai/gpt-5.1-codex	$1.10	$9	$0.11	—	400K	reasoningtoolsno structuredvision	Nov 12, 2025
Jiekou.AI gpt-5.1-codex	$1.13	$9	—	—	400K	reasoningtoolsstructuredvision	Jan 1, 2026
NanoGPT openai/gpt-5.1-codex	$1.25	$10	$0.125	—	400K	reasoningno toolsno structuredvision	Nov 13, 2025
Vivgrid gpt-5.1-codex	$1.25	$10	$0.125	—	400K	reasoningtoolsstructuredno vision	Nov 13, 2025
Impossibl openai/gpt-5.1-codex	$1.25	$10	$0.125	—	400K	reasoningtoolsstructuredvision	Nov 13, 2025
LLM Gateway azure/gpt-5.1-codex	$1.25	$10	—	—	400K	reasoningtoolsno structuredvision	Nov 13, 2025
AIHubMix gpt-5.1-codex	$1.25	$10	$0.125	—	400K	reasoningtoolsstructuredvision	Nov 13, 2025
OrcaRouter openai/gpt-5.1-codex	$1.25	$10	$0.125	—	400K	reasoningtoolsstructuredvision	Nov 13, 2025
Azure Cognitive Services gpt-5.1-codex	$1.25	$10	$0.125	—	400K	reasoningtoolsstructuredno vision	Nov 14, 2025
Helicone gpt-5.1-codex	$1.25	$10	$0.125	—	400K	no reasoningtoolsno structuredno vision	Jan 1, 2025
Vercel AI Gateway openai/gpt-5.1-codex	$1.25	$10	$0.13	—	400K	reasoningtoolsstructuredvision	Nov 13, 2025
DevPass (LLM Gateway) gpt-5.1-codex	$1.25	$10	$0.125	—	400K	reasoningtoolsstructuredvision	Nov 13, 2025
Kilo Gateway openai/gpt-5.1-codex	$1.25	$10	$0.13	—	400K	reasoningtoolsstructuredvision	Nov 13, 2025
Azure gpt-5.1-codex	$1.25	$10	$0.125	—	400K	reasoningtoolsstructuredno vision	Nov 14, 2025
Abacus gpt-5.1-codex	$1.25	$10	$0.125	—	400K	reasoningtoolsstructuredvision	Nov 13, 2025
OpenRouter openai/gpt-5.1-codex	$1.25	$10	$0.13	—	400K	reasoningtoolsstructuredvision	Nov 13, 2025
ZenMux openai/gpt-5.1-codex	$1.25	$10	$0.12	—	400K	reasoningtoolsno structuredvision	Nov 13, 2025
Eden AI azure/gpt-5.1-codex	$1.25	$10	$0.125	—	272K	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: $1.07unchanged
Best output /M: $8.50unchanged
Provider coverage: 19; 19 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 → GPT-5.1 Codex (Azure)

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.