How much does OpenAI: GPT-5.6 Luna cost per 1M tokens?

OpenAI: GPT-5.6 Luna costs $0.200 per 1M input tokens and $1.20 per 1M output tokens on the standard tier. Cached input is $0.020 per 1M.

What is OpenAI: GPT-5.6 Luna's context window?

OpenAI: GPT-5.6 Luna accepts up to 1,050,000 tokens in a single request, and can return up to 128,000 output tokens.

Is there a cheaper OpenRouter model than OpenAI: GPT-5.6 Luna?

Yes. MythoMax 13B is $0.080 per 1M input tokens versus $0.200 for OpenAI: GPT-5.6 Luna, with a 8,192 token context window.

Where does this OpenAI: GPT-5.6 Luna price come from?

From the OpenRouter catalogue, because OpenRouter does not publish machine-readable pricing. OpenRouter is a reseller, so its rate can differ from OpenRouter's own — verify before committing spend.

OpenAI: GPT-5.6 Luna pricing

GPT-5.6 Luna is a fast, cost-efficient model in OpenAI's GPT-5.6 series. It is suited for high-volume, latency-sensitive tasks such as chat, classification, and lightweight agentic workflows, providing capable reasoning… OpenAI: GPT-5.6 Luna from OpenRouter costs $0.200 per 1M input tokens and $1.20 per 1M output tokens. Cached input is $0.020 per 1M. Context window 1,050,000 tokens.

API id openai/gpt-5.6-luna · OpenRouter · source · updated 2026-09-25 · general-purpose

$0.200

Input / 1M tokens

$1.20

Output / 1M tokens

$0.020

Cached input / 1M

1.1M

Context window

OpenAI: GPT-5.6 Luna specifications

Provider: OpenRouter
API id: openai/gpt-5.6-luna
Model type: general-purpose
Context window: 1.1M tokens
Max output: 128K tokens
Currency: USD
Price source: Provider API
Last checked: 2026-09-25

gpt-5.6-luna across providers

The same model, priced by every seller we track. Ranked by the cost of 1M input + 1M output tokens, standard tier; savings measured against buying from the vendor directly.

Provider	Input /1M	Cached /1M	Output /1M	1M in + 1M out	vs vendor
OpenAIVendorCheapest	$0.200	$0.020	$1.20	$1.40	—
OpenRouterHostviewing	$0.200	$0.020	$1.20	$1.40	—

What OpenAI: GPT-5.6 Luna costs in practice

Estimated cost at common usage volumes
Workload	Input tokens	Output tokens	Estimated cost
Short chat turn	1,000	500	$0.0008
Document summary	50,000	2,000	$0.01
1M tokens in, 200K out	1,000,000	200,000	$0.44

Estimates use the standard tier and ignore caching discounts, so real bills with repeated prompt prefixes are typically lower.

Common questions

How much does OpenAI: GPT-5.6 Luna cost per 1M tokens?: OpenAI: GPT-5.6 Luna costs $0.200 per 1M input tokens and $1.20 per 1M output tokens on the standard tier. Cached input is $0.020 per 1M.
What is OpenAI: GPT-5.6 Luna's context window?: OpenAI: GPT-5.6 Luna accepts up to 1,050,000 tokens in a single request, and can return up to 128,000 output tokens.
Is there a cheaper OpenRouter model than OpenAI: GPT-5.6 Luna?: Yes. MythoMax 13B is $0.080 per 1M input tokens versus $0.200 for OpenAI: GPT-5.6 Luna, with a 8,192 token context window.
Where does this OpenAI: GPT-5.6 Luna price come from?: From the OpenRouter catalogue, because OpenRouter does not publish machine-readable pricing. OpenRouter is a reseller, so its rate can differ from OpenRouter's own — verify before committing spend.

Head-to-head comparisons

Compare OpenAI: GPT-5.6 Luna with another model →

Other OpenRouter models

See all OpenRouter pricing →