Tokenova

OpenAI vs OpenAI

GPT-5.6 Sol vs GPT-5.6 Luna: pricing comparison

GPT-5.6 Luna costs 25.0× less than GPT-5.6 Sol for a typical 1,000-input, 500-output request. Here is how the two compare on price, context and discounts.

Prices last updated:

GPT-5.6 SolGPT-5.6 Luna
ProviderOpenAIOpenAI
Input per 1M tokens$5.00$0.20
Output per 1M tokens$30.00$1.20
Context window1.05M1.05M
Batch discount50% off50% off
Typical request (1,000 in / 500 out)$0.02$0.0008
Monthly at 1,000 requests/day$600.00$24.00

GPT-5.6 Sol: Inputs above 272K tokens are billed at a higher long-context rate ($10 / $45).

GPT-5.6 Luna: Inputs above 272K tokens are billed at a higher long-context rate ($0.40 / $1.80).

Compare with your own numbers

GPT-5.6 Sol per request
$0.02
Per month
$600.00
GPT-5.6 Luna per request
$0.0008
Per month
$24.00

Cost by task

Cost per 1,000 requests at standard prices.
TaskTokens (in / out)GPT-5.6 SolGPT-5.6 Luna
Short chat reply500 / 300$11.50$0.46
RAG answer6,000 / 600$48.00$1.92
Summarize a long document12,000 / 1,000$90.00$3.60
Output-heavy generation1,000 / 4,000$125.00$5.00

Output tokens usually dominate the bill — see input vs output token cost.

Frequently asked questions

Is GPT-5.6 Sol or GPT-5.6 Luna cheaper?
GPT-5.6 Luna is cheaper for a typical request of 1,000 input and 500 output tokens: $0.0008 versus $0.02 for GPT-5.6 Sol, about 96% less.
What are the per-token prices of GPT-5.6 Sol and GPT-5.6 Luna?
GPT-5.6 Sol costs $5.00 input and $30.00 output per million tokens. GPT-5.6 Luna costs $0.20 input and $1.20 output per million tokens.
Which has the larger context window, GPT-5.6 Sol or GPT-5.6 Luna?
Both accept 1.05M tokens of context.

More comparisons

All comparisons →