GPT-5.1-Codex pricing.
prices as of · 19 providers · 19 prices
OpenAI's GPT-5.1-Codex holds 400k tokens of context, reads images as well as text and has a reasoning mode. Whether its weights are open is not stated by our sources.
GPT-5.1-Codex costs $1.25 in and $10 out per million tokens from OpenRouter; the cheapest price we can explain is $12.30 at Poe, checked 16 Sept 2026.
OpenRouter list price
$13.75/M tokens
$1.25 in · $10 out
read · 287% above the market median
What it costs for your work
OpenRouter list price
$1.35a month
cheapest we can explain · Poe
$1.20a month
difference
$0.15saved
A page is about 600 tokens in and 60 out, a support reply 200 in and 300 out, an email 150 in and 250 out. Nothing else is counted: no cache discount, no batch rate, no free tier.
Every provider selling GPT-5.1-Codex
Four groups, decided by the price and by what the provider publishes about it. Prices are per million tokens, and the share is that row against OpenRouter's price. OpenAI trained GPT-5.1-Codex and sells it on no catalog we read, so the price every row is measured against is OpenRouter's.
Cheaper, and we know why
2 pricesBelow list, with a published reason: hosting the open weights, a regional price list, credits, a stated discount.
PoeA consumer subscription with an API bolted on. Points convert to dollars, so the rate moves when the conversion does.
$1.10 / $9in / out per M
0.89×of list price
$1.19 / $9.50in / out per M
0.95×of list price
Same price as the maker
16 pricesThe same price the maker charges, sold by someone else.
$1.25 / $10in / out per M
1.00×of list price
$1.25 / $10in / out per M
1.00×of list price
VivgridThe same price OpenRouter charges.
$1.25 / $10in / out per M
1.00×of list price
$1.25 / $10in / out per M
1.00×of list price
$1.25 / $10in / out per M
1.00×of list price
AIHubMixThe same price OpenRouter charges.
$1.25 / $10in / out per M
1.00×of list price
OrcaRouterThe same price OpenRouter charges.
$1.25 / $10in / out per M
1.00×of list price
Azure Cognitive ServicesThe same price OpenRouter charges.
$1.25 / $10in / out per M
1.00×of list price
HeliconeThe same price OpenRouter charges.
$1.25 / $10in / out per M
1.00×of list price
$1.25 / $10in / out per M
1.00×of list price
$1.25 / $10in / out per M
1.00×of list price
$1.25 / $10in / out per M
1.00×of list price
AbacusThe same price OpenRouter charges.
$1.25 / $10in / out per M
1.00×of list price
$1.25 / $10in / out per M
1.00×of list price
$1.25 / $10in / out per M
1.00×of list price
$1.25 / $10in / out per M
1.00×of list price
Cheaper, and nobody says why
1 price · never rankedBelow list on a closed model with nothing to account for it. Shown, never ranked, never a pick.
OpenCode Zen0.86× OpenRouter's list price on a closed model, and nobody says why. Listed, never ranked.
$1.07 / $8.50in / out per M
0.85×of list price
Frequently asked
- Who sells GPT-5.1-Codex cheapest?
- Poe, at $1.10 in and $9 out per million tokens, read on 16 Sept 2026. A consumer subscription with an API bolted on. Points convert to dollars, so the rate moves when the conversion does.
- Is GPT-5.1-Codex open weights?
- No. OpenAI keeps the weights, so every price on this page is OpenAI's own or a resale of it. A price below list here needs a published reason, or it is listed and never ranked.
- How much context does GPT-5.1-Codex hold?
- 400,000 tokens in one call, which is about 400k, and it can call your own functions.
- How does GPT-5.1-Codex compare with the rest of the market?
- At $13.75 per million tokens, OpenRouter's price is 287% above the $3.55 median across the 337 text models we track.