GPT-5.1 pricing.
Prices checked
GPT-5.1 costs $1.25 in and $10 out per million tokens from OpenAI; the cheapest price is $3.13 at Poe, checked .
OpenAI's own price
OpenAI
$1.25 in · $10 out
290% above the typical price of the 392 text models we track.
Cheapest price
Poe
$1.14 in · $9.09 out
9% less than OpenAI, and the provider says why.
Web search from this model costs $10 per 1,000 searches, plus its tokens; dedicated search APIs from $1
Every provider selling GPT-5.1
- 1
$1.14 in · $9.09 out
$3.13/M tokens - 2
$1.19 in · $9.50 out
$3.27/M tokens - 3
$1.25 in · $10 out
$3.44/M tokens - 4
$1.25 in · $10 out
$3.44/M tokens - 5
$1.25 in · $10 out · 128k context here
$3.44/M tokens - 6Same as maker
$1.25 in · $10 out
$3.44/M tokens - 7
$1.25 in · $10 out · 128k context here
$3.44/M tokens - 8
$1.25 in · $10 out
$3.44/M tokens - 9
$1.25 in · $10 out
$3.44/M tokens - 10
$1.25 in · $10 out
$3.44/M tokens - 11Same as maker
$1.25 in · $10 out
$3.44/M tokens - 12
$1.25 in · $10 out
$3.44/M tokens - 13
$1.25 in · $10 out · 128k context here
$3.44/M tokens - 14
$1.25 in · $10 out
$3.44/M tokens - 15
$1.25 in · $10 out
$3.44/M tokens - 16
$1.25 in · $10 out
$3.44/M tokens - 17
$1.25 in · $10 out
$3.44/M tokens - 18
$1.25 in · $10 out
$3.44/M tokens - 19
$1.25 in · $10 out
$3.44/M tokens - 20
$1.25 in · $10 out
$3.44/M tokens - 21
$1.25 in · $10 out
$3.44/M tokens - 22
$1.25 in · $10 out
$3.44/M tokens - 23
$1.25 in · $10 out · 128k context here
$3.44/M tokens - 24
$1.25 in · $10 out
$3.44/M tokens - 25
$1.25 in · $10 out · 128k context here
$3.44/M tokens
- 26
$1.25 in · $10 out · 410k context here
$3.44/M tokens - 27
$1.25 in · $10 out
$3.44/M tokens - 28
$1.25 in · $10 out
$3.44/M tokens - 29
$1.25 in · $10 out · 128k context here
$3.44/M tokens - 30
$1.25 in · $10 out
$3.44/M tokens - 31
$1.32 in · $10.55 out
$3.63/M tokens - 32
$1.38 in · $11 out
$3.78/M tokens - 33
$1.38 in · $10.99 out
$3.78/M tokens
What it costs for your work
A month at OpenAI's own price
A month at Poe, the cheapest
What you save
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.
How we count
Prices are per million tokens. The big number on each row is blended 3 in : 1 out, the way most work uses a model. A price below OpenAI's own is listed as cheapest only when the provider says why.
- Resells
- The provider sells another company's endpoint, at a margin of its own or at the maker's price.
- Same as maker
- Sold by someone else at the price the maker charges.
- Maker's price
- What the lab that trained the model charges on its own API. Every other row is measured against it.
- Costs more
- Sold by someone else for more than the maker charges.
- Not ranked
- Below the maker's price on a closed model with nothing to account for it, or from a catalog we could not read reliably. Listed, and never a pick.
Similar models
Models from other labs that do what GPT-5.1 does, cheapest first. Each percentage is against GPT-5.1's cheapest price, $3.13 per M tokens.
Frequently asked
- Who sells GPT-5.1 cheapest?
- Poe, at $1.14 in and $9.09 out per million tokens, checked 31 Oct 2026. The provider sells another company's endpoint, at a margin of its own or at the maker's price.
- Is GPT-5.1 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 OpenAI's here needs a published reason, or it is listed and not ranked.
- How much context does GPT-5.1 hold?
- 400,000 tokens in one call, which is about 400k, and it can call your own functions.
- How does GPT-5.1 compare with the rest of the market?
- At $3.44 per million tokens, OpenAI's own price is 290% above the typical $0.88 across the 392 text models we track.
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