GPT-5.4 nano vs GPT-5.6 Luna.
model vs model · prices as of
GPT-5.6 Luna takes 3 of 5 rounds against GPT-5.4 nano. GPT-5.4 nano counters on price: $1.68 per million tokens against $1.80, for 400k context instead of 1.1M.
OpenAIGPT-5.4 nano
$1.68/M tokens
cheapest we can explain, at Poe · $0.177 per 1,000 pages
400k context · tool calling · reads images
OpenAIwins 3 roundsGPT-5.6 Luna
$1.80/M tokens
OpenAI list price, nothing below it is accounted for · $0.192 per 1,000 pages
1.1M context · tool calling · reads images
List price in (lower wins)
$0.20/M
$0.20/M
List price out (lower wins)
$1.25/M
$1.20/M
Cheapest we can explain (lower wins)
$1.68/M at Poe
none below list
Standard price (lower wins)
$1.85/M
$1.80/M
Cost per 1,000 pages (lower wins)
$0.177
$0.192
Context
400k tokens
1.1M tokens
Open weights
no
no
Tool calling
yes
yes
Structured output
yes
yes
Reads images
yes
yes
Reasoning
yes
yes
Released
17 Mar 2026
9 Jul 2026
Providers selling it
34
43
Price we measure against
the maker's own
the maker's own
Trains on your prompts (no is better)
not stated
no provider to check
Providers selling both · 32
Jiekou$1.76 / $1.80
302.AI$1.85 / $1.80
Atlas Cloud$1.85 / $1.80
Azure AI Foundry$1.85 / $1.80
Cloudflare AI Gateway$1.85 / $1.80
CrossModel$1.85 / $1.80
FastRouter$1.85 / $1.80
GitHub Copilot$1.85 / $1.80
GPT-5.4 nano then GPT-5.6 Luna, per million tokens · showing the 8 cheapest of 32
Go further
Add a third or fourth model, or switch the weighting, in the tool.
What moved in the last seven days
- GPT-5.4 nano
Nous Portal$0.16 / $1 $0.20 / $1.2525% dearer · - GPT-5.6 LunaNous Portal$0.16 / $0.96 $0.20 / $1.2025% dearer ·
- GPT-5.6 Luna
Requesty$0.20 / $1.20 $0.22 / $1.3210% dearer ·
Frequently asked
- Which is cheaper, GPT-5.4 nano or GPT-5.6 Luna?
- GPT-5.4 nano, at $1.68 per million tokens against $1.80 for GPT-5.6 Luna, three parts input to one part output, read on 16 Sept 2026.
- Where is each one cheapest?
- GPT-5.4 nano: $1.68 at Poe. GPT-5.6 Luna: nobody goes below the maker's own price with a reason we can point at, so $1.80 is the number to beat.
- Can I buy both from one provider?
- Yes. 32 providers sell both: Jiekou, 302.AI, Atlas Cloud, Azure AI Foundry, Cloudflare AI Gateway, CrossModel, and more. The cheapest of them for the two together is Jiekou.
- Which holds more context?
- GPT-5.6 Luna, at 1.1M tokens against 400k.
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.