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GPT 5.1 Codex Max

OpenAI · gpt-5-1-codex-max

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

Specification

openai listing

Context
272K
Max output
128K
Released
2025-11-13
Knowledge cutoff
2024-09-30
Retires
2026-07-23
Open weights
no
Input
text, image, pdf
Output
text

Price

US dollars per million tokens · openai list price

Input
$1.25
Output
$10.00
Cache read
$0.125
Cache write
$1.25

Available from 16 hosts

HostIn $/MOut $/MCache rdCache wrContextOutputRetires
openaivendor$1.25$10.00$0.125272K128K2026-07-23
poe$1.10$9.00$0.11400K128K
jiekou$1.125$9.00400K128K
abacus$1.25$10.00400K128K
azure$1.25$10.00$0.125
400K
272K
128K2027-05-18
databricks$1.25$10.00$0.125$1.25272K128K2026-07-16
edenai$1.25$10.00$0.125272K128K
kilo$1.25$10.00$0.125400K128K
ofox$1.25$10.00$0.13256K128K
opencode$1.25$10.00$0.125400K128K
openrouter$1.25$10.00$0.125400K128K
vercel$1.25$10.00$0.125400K128K
vivgrid$1.25$10.00$0.125400K128K
nano-gpt$2.50$20.00$0.25400K128K
chatgpt · chatgpt128K128K
github_copilot · github-copilot128K128K

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