All Models
OpenAISmall / On-DeviceProprietary Commercial APIReleased: 2026-10-08

GPT-6 Luna

Ultra-fast low-latency frontier model in the GPT-6 generation, streaming at 130+ tps across a 1-million-token context window at $0.20/$0.80 economics.

Foundation DNA91/100
DENSE ArchProprietary params
At a Glance Specifications
Context Window

1,000k

~750k words input

Token Pricing

$0.2 / $0.8

Prompt / Completion per 1M

Top Benchmark

78.4 % resolved

SWE-bench Verified

Hardware Tier

Cloud Managed

Zero local VRAM

6-Axis Foundation Model DNA

Holistic Capability Distribution

Normalized 0-100 rating vectors balanced across intelligence, throughput, and economics.

Overall Index:91/100
ReasoningCodingSpeedEconomicsContextFlexibility
Context: 100/100 (Window Horizon)
ReasoningGPQA / Logic / Math
91/100
CodingSWE-bench / LCB
92/100
SpeedTokens / Second
98/100
EconomicsCost Efficiency
99/100
ContextWindow Horizon
100/100
FlexibilityTool Use & Open
94/100
Performance Evaluations

Verified LLM Benchmarks

Empirical evaluations across academic reasoning, software engineering, agentic execution, and human preference.

SWE-bench Verified Headline
78.4% resolved
swebench.harness
CodingOpenAI Technical Documentation
GPQA Diamond Headline
84% pass@1
Inspect
Academic ReasoningOpenAI Technical Documentation
Chatbot Arena Elo Headline
1475Elo
LMSYS Blind Pairwise Battles
Human Preferencehttps://chat.lmsys.org/
Real-Time Provider Telemetry

Inference Latency & Generation Throughput

Empirical telemetry benchmarking generation throughput (Tokens/Second) and Time to First Token (TTFT).

Peak Generation Speed
135tokens/sec

Measured under concurrent production load

Lowest Time to First Token
110ms

p95 latency: 280 ms

Telemetry Verification
99.98%uptime

Across 6,200 monitored requests

Production Trade-Offs

Architectural Strengths vs. Operational Considerations

An objective technical balance sheet analyzing deployment advantages and production constraints.

Operational Advantages

Key Architectural Strengths

  • 1,000,000-token context window in a compact fast tier.
  • Sub-110ms time-to-first-token with 135 tps generation.
  • Scores 78.4% on SWE-bench Verified at $0.20/$0.80 pricing.
Production Constraints

Operational Considerations

  • Compared against diffusion-based alternatives like Mercury 3 on raw token throughput.
Technical Specifications

Hardware & Execution Parameters

Architecture Typedense
Total ParametersProprietary
Attention MechanismSliding-Window
Context Window1,000,000 tokens
Max Output Tokens64,000 tokens
Supported Modalities
textimage
License Typeproprietary
Commercial Use Allowed
Model DistillationProhibited
Zero Data RetentionAvailable
Knowledge Cutoff2026-08
Model Heritage & Evolutionary Lineage

Genealogical Provenance

Low-latency fast-tier model of the GPT-6 generation.

Base Precursor

openai gpt 5 6 luna

Current Architecture

GPT-6 Luna

openai gpt 6 astraopenai gpt 6 sol
Engineering Deep-Dive

Architecture Engineering & Capability Deep-Dive

Topology & Attention Mechanics

High-density dense transformer optimized for speculative decoding and low-latency prefill.

Evaluation Profile & Reasoning Capabilities

Fast code edits, real-time agentic tool chaining, and document extraction.

Inference Economics & Cost Optimization

$0.20 / $0.80 per 1M tokens with $0.02 cache reads.

Primary Production Workloads & Suitability

Real-time voice and browser-use agents
Interactive code completion
High-throughput data extraction
Compute & Deployment Architecture

Cloud Deployment Architecture & Hardware Sizing

Cloud Deployment Architecture

Distributed enterprise serving infrastructure, autoscaling semantics, and runtime execution profile.

Cloud APIZero Local VRAM Required

Proprietary commercial model hosted on managed multi-region clusters with automatic autoscaling, high availability, and prompt prefix caching.

SLA: 99.9% Cloud Availability
Rate Limit: Scaled via Provider Quota
Cache: Automatic Prefix Compression
Serving Model

Multi-Tenant Cloud API

Continuous autoscaling with regional failover

Hardware Overhead

0 GB Local VRAM

Inference executed on hyperscaler accelerator clusters

Context Capacity

1,000k tokens

Supported with automated KV cache prefix compression

SDK Installation

$npm install openai
$pip install openai
Inference Economics & Total Cost of Ownership

Commercial Token Rates & Cost Estimator

Base Input Tokens

$0.20 / 1M

Standard prompt context ingestion

Base Output Tokens

$0.80 / 1M

Generated completion & thinking tokens

Prompt Cache ReadUp to 80% Off

$0.02 / 1M

Re-used prompt prefix context

Monthly Production Cost Simulator

Daily Prompt Ingestion5M tokens/day (~150M/mo)
Daily Completion Generation1M tokens/day (~30M/mo)
Prompt Prefix Cache Hit Rate40%
Estimated Monthly Spend

$43.20

Includes prompt caching

Monthly Cache Savings

-$10.80

Saved via prefix context caching

Frontier Alternatives

Comparable Foundation Architectures

Alternative foundation models with comparable intelligence benchmarks, context windows, and deployment profiles.

InceptionGeneral

Mercury 3

Mercury 3 is Inception's frontier diffusion large language model (dLLM) co-founded by Stanford Professor Stefano Ermon, delivering an unprecedented 1,068 tokens per second inference speed via parallel denoising across a native 1-million-token context window.

Context:1,000k ctx
Parameters:Proprietary (~40x Mercury 1)
Input Rate:$0.1/1M
Compare Architecture
AnthropicSmall / On-Device

Claude Haiku 5.5

Sub-100ms ultra-fast foundation model delivering Claude 4 Sonnet-level capability at edge prices ($0.50/$2.50) with 500k context.

Context:500k ctx
Parameters:Proprietary
Input Rate:$0.5/1M
Compare Architecture
OpenAIReasoning

GPT-6 Sol

Primary solar flagship model of the GPT-6 generation, delivering 91.0% SWE-bench resolution, 1M context, and $4/$16 pricing for frontier developer automation.

Context:1,000k ctx
Parameters:Proprietary
Input Rate:$4/1M
Compare Architecture
OpenAIDecision

OpenAI Decisions

OpenAI Decisions is OpenAI's dedicated high-throughput decision-making API powered by GPT-6 Luna, accessed via the POST /v1/decisions endpoint. Designed for agent routing, automated content moderation, and classification, it processes typed questions (predicates, categorical choices, and rubric scores) roughly 10x faster than standard generation, billed at $0.10 per million input tokens with zero output-token fees.

Context:128k ctx
Parameters:Proprietary (GPT-6 Luna Decision Engine)
Input Rate:$0.1/1M
Compare Architecture
Developer Quickstart

SDK Installation & API Integration

$npm install openai
$pip install openai
import OpenAI from 'openai';

const client = new OpenAI();
const completion = await client.chat.completions.create({
  model: 'gpt-6-luna',
  messages: [{ role: 'user', content: 'Ping' }],
});
console.log(completion.choices[0].message.content);
Knowledge Base

Frequently Asked Questions about GPT-6 Luna

Engineering specifications, VRAM sizing, commercial licensing terms, token economics, and empirical benchmark evaluations.

GPT-6 Luna is an autoregressive 1M-context model generating at ~135 tps, while Mercury 3 uses a parallel diffusion architecture reaching 1,068 tps.

Verified Engineering FAQ
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