GPT-5 vs GPT-5.1.
model vs model · prices as of
GPT-5 and GPT-5.1 split the 5 rounds this table counts: the two list price rows, the cheapest price we can explain, the standard price and context. The weighting you pick decides the rest.
OpenAIGPT-5
$12.50/M tokens
cheapest we can explain, at Poe · $1.23 per 1,000 pages
400k context · tool calling · reads images
List price in (lower wins)
$1.25/M
$1.25/M
List price out (lower wins)
$10/M
$10/M
Cheapest we can explain (lower wins)
$12.50/M at Poe
$12.50/M at Poe
Standard price (lower wins)
$13.75/M
$13.75/M
Cost per 1,000 pages (lower wins)
$1.23
$1.23
Context
400k tokens
400k tokens
Open weights
no
no
Tool calling
yes
yes
Structured output
yes
yes
Reads images
yes
yes
Reasoning
yes
yes
Released
7 Aug 2025
13 Nov 2025
Providers selling it
33
34
Price we measure against
the maker's own
the maker's own
Trains on your prompts (no is better)
not stated
not stated
Providers selling both · 29
Poe$12.50 / $12.50
Jiekou$13.06 / $13.06
302.AI$13.75 / $13.75
Abacus$13.75 / $13.75
Azure AI Foundry$13.75 / $13.75
Azure Cognitive Services$13.75 / $13.75
Cloudflare AI Gateway$13.75 / $13.75
FastRouter$13.75 / $13.75
GPT-5 then GPT-5.1, per million tokens · showing the 8 cheapest of 29
Go further
Add a third or fourth model, or switch the weighting, in the tool.
What moved in the last seven days
Frequently asked
- Which is cheaper, GPT-5 or GPT-5.1?
- Neither: both run at $12.50 per million tokens, three parts input to one part output, read on 16 Sept 2026.
- Where is each one cheapest?
- GPT-5: $12.50 at Poe. GPT-5.1: $12.50 at Poe.
- Can I buy both from one provider?
- Yes. 29 providers sell both: Poe, Jiekou, 302.AI, Abacus, Azure AI Foundry, Azure Cognitive Services, and more. The cheapest of them for the two together is Poe.
- Which holds more context?
- Both hold 400k tokens in one call.
Prices exclude tax and are per million tokens, read 16 Sept 2026 from each provider's own catalog. The standard price blends three parts input to one part output; a page is 600 tokens in and 60 out. Bars are scaled to the larger value in each row.