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GPT 5.1 Codex Mini

OpenAI · gpt-5-1-codex-mini

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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
Output
text

Price

US dollars per million tokens · openai list price

Input
$0.25
Output
$2.00
Cache read
$0.025
Cache write
$0.25

Batch and priority prices

US dollars per million tokens · per listing

PriceListing$/M
Priority inputazure$0.45
Priority outputazure$3.60

Available from 21 hosts

HostIn $/MOut $/MCache rdCache wrContextOutputRetires
openaivendor$0.25$2.00$0.025272K128K2026-07-23
poe$0.22$1.80$0.022400K128K
jiekou$0.225$1.80400K128K
aihubmix$0.25$2.00$0.025400K128K
azure
$0.25
$0.275
$2.00
$2.20
$0.025
$0.028
400K
272K
128K2027-05-15
azure-cognitive-services$0.25$2.00$0.025400K128K
databricks$0.25$2.00$0.025$0.25272K128K2026-07-16
edenai$0.25$2.00$0.025272K128K
helicone$0.25$2.00$0.025400K128K
impossibl$0.25$2.00$0.025400K128K
kilo$0.25$2.00$0.03400K128K
llmgateway$0.25$2.00$0.025400K128K
llmgateway-providers$0.25$2.00$0.025400K128K
nano-gpt$0.25$2.00$0.025400K128K
ofox$0.25$2.00$0.03256K66K
opencode$0.25$2.00$0.025400K128K
openrouter$0.25$2.00$0.03400K128K
orcarouter$0.25$2.00$0.025400K128K
vercel$0.25$2.00$0.03400K128K
zenmux$0.25$2.00$0.03400K64K
chatgpt · chatgpt128K64K

Price history

append-only observations · a listing writes a row only when its price moves

DateHostField$/M
2026-09-02openrouterCache read$0.03
2026-09-06openrouterCache read$0.03
2026-09-02openrouterInput$0.25
2026-09-06openrouterInput$0.25
2026-09-02openrouterOutput$2.00
2026-09-06openrouterOutput$2.00

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