GPT-6 Luna

OpenAIgpt-6Active

OpenAI's most efficient model for focused, high-volume tasks.

Released: —
Knowledge cutoff: 2026-05-18
Context window: 1,050,000 tokens
Max input: 922,000 tokens
Max output: 128,000 tokens
Modalities: text, image → text
Reasoning: Yes
Tool calling: Yes

Prices by provider

Exact USD list prices. — means the price is unknown (not free). History is append-only: a change adds a new entry.

OpenAI

Model id: gpt-6-luna

Meter	Standard	Batch	Unit
Input	$0.10	$0.05	per 1M tokens
Output	$0.50	$0.25	per 1M tokens
Cache read	$0.01	$0.005	per 1M tokens
Cache write	$0.125	$0.0625	per 1M tokens
Prompts over 272,000 tokens (whole request)
Input	$0.20	$0.10	per 1M tokens
Output	$0.75	$0.375	per 1M tokens
Cache read	$0.02	$0.01	per 1M tokens
Cache write	$0.25	$0.125	per 1M tokens

Effective from: 2026-10-09
Source: Provider pricing page, fetched 2026-10-09 19:34:00 UTC
Verify at: https://developers.openai.com/api/docs/models/gpt-6-luna
Notes: Standard and Batch tables. Short context is up to 272K input tokens; long-context rates apply to the full request above it.

No earlier prices recorded.

API example

curl https://api.openai.com/v1/chat/completions \
  -H "Authorization: Bearer $OPENAI_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model": "gpt-6-luna", "messages": [{"role": "user", "content": "Hello"}]}'

OpenRouter

Model id: openai/gpt-6-luna

Meter	Standard	Batch	Unit
Input	$0.10	$0.05	per 1M tokens
Output	$0.50	$0.25	per 1M tokens
Cache read	$0.01	$0.005	per 1M tokens
Cache write	$0.125	$0.0625	per 1M tokens
Search	$0.01	$0.01	per search
Prompts over 272,000 tokens (whole request)
Input	$0.20	$0.10	per 1M tokens
Output	$0.75	$0.375	per 1M tokens
Cache read	$0.02	$0.01	per 1M tokens
Cache write	$0.25	$0.125	per 1M tokens

Effective from: 2026-10-09
Source: OpenRouter API, fetched 2026-10-09 19:37:00 UTC
Source entry: openai/gpt-6-luna
Notes: Tiers are OpenRouter pricing.overrides with min_prompt_tokens = 272000. Batch rates are the separate openai/gpt-6-luna:batch id.

No earlier prices recorded.

API example

curl https://openrouter.ai/api/v1/chat/completions \
  -H "Authorization: Bearer $OPENROUTER_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model": "openai/gpt-6-luna", "messages": [{"role": "user", "content": "Hello"}]}'

Model ids

Provider	Id to send	Also accepted
OpenAI	`gpt-6-luna`
OpenRouter	`openai/gpt-6-luna`

This model as JSON

curl -s https://models.omg.bitop.dev/api/v1/models/gpt-6-luna.json

Open the JSON