OpenAI: GPT-5.6 Luna

OpenAI · family gpt-5.6-luna

Identity and capabilities

Status: active
Context window: 1,050,000
Maximum output: 128,000
Image input: Yes
Reasoning: Yes
Tool calling: Yes
First seen: 2026-08-08 09:49:33Z UTC
Last verified: 33 min ago

Known source identifiers: openai-direct: gpt-5.6-luna · openrouter: openai/gpt-5.6-luna · openrouter: openai/gpt-5.6-luna-pro · openrouter: openai/gpt-5.6-luna-pro:batch · openrouter: openai/gpt-5.6-luna:batch

Current offers

OpenRouterAggregator

openai/gpt-5.6-luna · availability available · verified 45 h ago · source official api

Provider limits: context 1,050,000 · maximum output 128,000 · vision Yes · reasoning Yes · tool use Yes

Pricing components as published by the source
Component	Service tier	Context	Price	Unit	As published
Cache write	Standard	Default context	$0.125	per 1M tokens	`0.000000125`
Cached input	Standard	Default context	$0.01	per 1M tokens	`0.00000001`
Input	Standard	Default context	$0.10	per 1M tokens	`0.0000001`
Output	Standard	Default context	$0.60	per 1M tokens	`0.0000006`

OpenRouterAggregatorPro mode

openai/gpt-5.6-luna-pro · availability available · verified 45 h ago · source official api

Provider limits: context 1,050,000 · maximum output 128,000 · vision Yes · reasoning Yes · tool use Yes

Pricing components as published by the source
Component	Service tier	Context	Price	Unit	As published
Cache write	Standard	Default context	$0.125	per 1M tokens	`0.000000125`
Cached input	Standard	Default context	$0.01	per 1M tokens	`0.00000001`
Input	Standard	Default context	$0.10	per 1M tokens	`0.0000001`
Output	Standard	Default context	$0.60	per 1M tokens	`0.0000006`

OpenRouterAggregatorPro mode

openai/gpt-5.6-luna-pro:batch · availability available · verified 45 h ago · source official api

Provider limits: context 1,050,000 · maximum output 128,000 · vision Yes · reasoning Yes · tool use Yes

Pricing components as published by the source
Component	Service tier	Context	Price	Unit	As published
Cached input	Standard	Default context	$0.01	per 1M tokens	`0.00000001`
Input	Standard	Default context	$0.10	per 1M tokens	`0.0000001`
Output	Standard	Default context	$0.60	per 1M tokens	`0.0000006`

OpenAIAI Developer

gpt-5.6-luna · availability available · verified 45 h ago · source official pricing page

Provider limits: context Unknown · maximum output Unknown · vision Unknown · reasoning Unknown · tool use Unknown

Pricing components as published by the source
Component	Service tier	Context	Price	Unit	As published
Cache write	Batch	Long context	$0.25	per 1M tokens	`$0.25`
Cache write	Batch	Short context	$0.125	per 1M tokens	`$0.125`
Cache write	Fast	Long context	$1.00	per 1M tokens	`$1.00`
Cache write	Fast	Short context	$0.50	per 1M tokens	`$0.50`
Cache write	Flex	Long context	$0.25	per 1M tokens	`$0.25`
Cache write	Flex	Short context	$0.125	per 1M tokens	`$0.125`
Cache write	Standard	Long context	$0.50	per 1M tokens	`$0.50`
Cache write	Standard	Short context	$0.25	per 1M tokens	`$0.25`
Cached input	Batch	Long context	$0.02	per 1M tokens	`$0.02`
Cached input	Batch	Short context	$0.01	per 1M tokens	`$0.01`
Cached input	Fast	Long context	$0.08	per 1M tokens	`$0.08`
Cached input	Fast	Short context	$0.04	per 1M tokens	`$0.04`
Cached input	Flex	Long context	$0.02	per 1M tokens	`$0.02`
Cached input	Flex	Short context	$0.01	per 1M tokens	`$0.01`
Cached input	Standard	Long context	$0.04	per 1M tokens	`$0.04`
Cached input	Standard	Short context	$0.02	per 1M tokens	`$0.02`
Input	Batch	Long context	$0.20	per 1M tokens	`$0.20`
Input	Batch	Short context	$0.10	per 1M tokens	`$0.10`
Input	Fast	Long context	$0.80	per 1M tokens	`$0.80`
Input	Fast	Short context	$0.40	per 1M tokens	`$0.40`
Input	Flex	Long context	$0.20	per 1M tokens	`$0.20`
Input	Flex	Short context	$0.10	per 1M tokens	`$0.10`
Input	Standard	Long context	$0.40	per 1M tokens	`$0.40`
Input	Standard	Short context	$0.20	per 1M tokens	`$0.20`
Output	Batch	Long context	$0.90	per 1M tokens	`$0.90`
Output	Batch	Short context	$0.60	per 1M tokens	`$0.60`
Output	Fast	Long context	$3.60	per 1M tokens	`$3.60`
Output	Fast	Short context	$2.40	per 1M tokens	`$2.40`
Output	Flex	Long context	$0.90	per 1M tokens	`$0.90`
Output	Flex	Short context	$0.60	per 1M tokens	`$0.60`
Output	Standard	Long context	$1.80	per 1M tokens	`$1.80`
Output	Standard	Short context	$1.20	per 1M tokens	`$1.20`

Active promotions

50% off openai/gpt-5.6-luna
OpenRouter · officially stated 50% · End date unknown
Official source

OpenAI: GPT-5.6 Luna

Identity and capabilities

Current offers

OpenRouterAggregator

OpenRouterAggregatorPro mode

OpenRouterAggregatorPro mode

OpenAIAI Developer

Active promotions

50% off openai/gpt-5.6-luna