gpt-6-luna

gpt-6-luna

Lightweight large model launched by OpenAI
2026-09-23
LLM
Model capability: imageModel capability: videoModel capability: thinkingModel capability: function_call
Cache Creation:
$0.125/1M tokensstarting from
Cache Read:
$0.01/1M tokensstarting from
Input:
$0.1/1M tokensstarting from
Output:
$0.5/1M tokensstarting from
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API Overview

GPT-6 Luna is an ultra-lightweight large model specially designed by OpenAI for applications requiring ultra-low latency in the millisecond range, high concurrency inference, and extremely cost-effective performance. As the speed and throughput workhorse of the GPT-6 family, Luna builds on the excellent instruction-following and structured-output capabilities of the GPT-6 generation while pushing response latency and token computation costs to their absolute limits. The model supports an adaptive Thinking/Reasoning mechanism, enabling it to deliver lightning-fast, high-quality outputs even in highly concurrent scenarios such as daily customer service routing, high-frequency data parsing, intent recognition, and lightweight code generation. It’s the ideal choice for replacing previous-generation Flash/Mini-level models and significantly reducing enterprise AI operating costs at scale.

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Core Capabilities

Ultra-fast Response Speed and High Throughput: Ultra-low first-token latency (TTFT) and dramatically improved end-to-end generation speed, optimized specifically for high-concurrency API access and real-time interactive systems.

Adaptive Thinking and Lightweight Reasoning: Natively supports a lightweight thinking mechanism that allows users to select low or medium reasoning intensity based on task complexity, significantly reducing misjudgment rates in complex rule-based decision-making and lightweight logical problem-solving.

1M Ultra-long Context and Seamless Caching: By default, it supports an ultra-long context window of 1,000,000 (1M) tokens, perfectly compatible with large document analysis, multi-turn historical conversations, and high-frequency structured data (JSON) extraction.

Extremely Competitive Pricing: API call costs are just a fraction of those for the flagship Astra model—input costs as low as $0.20 per 1 million tokens—greatly reducing the hidden costs associated with large-scale application deployment.

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API Analytics

API Reference (5)

API DescriptionAPI EndpointRequest MethodStabilityParameter Description
Chat(Talk)
POST
Stable
View Details
Chat (Image Analysis)
POST
Stable
View Details
Chat (Structured Output)
POST
Stable
View Details
Chat (function call)
POST
Stable
View Details
Responses
POST
Stable
View Details

API Pricing

$¥ 円 ₽
ModelDescriptionContextOfficial Price302.AI PriceOfficial Price Gap

gpt-6-luna

≤ 272K
272000

Cache Creation$0.125 / 1M tokens
Cache Read$0.01 / 1M tokens
Input$0.1 / 1M tokens
Output$0.5 / 1M tokens

Cache Creation$0.125 / 1M tokens
Cache Read$0.01 / 1M tokens
Input$0.1 / 1M tokens
Output$0.5 / 1M tokens

Original Price

gpt-6-luna

> 272K
1050000

Cache Creation$0.25 / 1M tokens
Cache Read$0.02 / 1M tokens
Input$0.2 / 1M tokens
Output$0.75 / 1M tokens

Cache Creation$0.25 / 1M tokens
Cache Read$0.02 / 1M tokens
Input$0.2 / 1M tokens
Output$0.75 / 1M tokens

Original Price