OpenAI: GPT-6 Luna (batch) pricing and limits

id openai/gpt-6-luna:batch · listed 2026-09-22

Input (per 1M tokens)	$0.050
Output (per 1M tokens)	$0.250
Cached input read (per 1M)	$0.005
Cache write (per 1M)	$0.063
Context window	1,050,000 tokens
Max output	128,000 tokens
Modalities	file+image+text → text
Reasoning	yes

What 1,000 calls cost at 1,000 input and 300 output tokens each: $0.13.

GPT-6 Luna is the fast, cost-efficient model in OpenAI's GPT-6 series, positioned below GPT-6 Sol. It is suited for high-volume and latency-sensitive workloads such as chat, classification, and lightweight agentic...

Cheaper on both input and output, with at least half the context

Model	In / 1M	Out / 1M	Context
Auto Router (Beta)	$-1000000.000	$-1000000.000	2,000,000
Pareto Code Router	$-1000000.000	$-1000000.000	2,000,000
Auto Router	$-1000000.000	$-1000000.000	2,000,000
DeepSeek: DeepSeek V4 Flash Latest	$0.042	$0.173	1,048,576
DeepSeek: DeepSeek V4 Flash 0731	$0.044	$0.133	1,048,576
Thinking Machines: Inkling Small (free)	free	free	1,048,576

Other openai models

OpenAI: gpt-oss-20b ($0.018 / $0.090) · OpenAI: gpt-oss-20b (batch) ($0.024 / $0.112) · OpenAI: GPT-5 Nano (batch) ($0.025 / $0.200) · OpenAI: gpt-oss-120b (batch) ($0.030 / $0.136) · OpenAI: GPT-6 Luna Pro (batch) ($0.050 / $0.250) · OpenAI: GPT-5 Nano ($0.050 / $0.400) · OpenAI: GPT-4.1 Nano (batch) ($0.050 / $0.200) · OpenAI: gpt-oss-safeguard-20b ($0.075 / $0.300)

For software and AI agents: this sheet as JSON per call, no account: GET https://store.agentexchange.work/gw/models/model?id=openai/gpt-6-luna:batch (0.002 USD), /gw/models/cheapest?min_context=128000, /gw/models/models?provider=openai. Pay per call in USDC (x402) or with a 19 USD card key for 1,000 calls. Catalogue · llms.txt

Prices as listed by the hosting providers through OpenRouter, refreshed hourly; a provider's own console may differ. Not affiliated with openai. Agent Exchange