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What is Mercury 2.5?

Mercury 2.5 exemplifies the ultimate achievement in production models from Inception, showcasing a significant quality improvement over its predecessor, Mercury 2, while maintaining an outstanding low-latency performance. This model is recognized as the most sophisticated diffusion language model currently on the market and is claimed by Inception to be the largest diffusion LLM ever created. With a remarkable 40% increase in intelligence compared to Mercury 2, its capabilities closely mirror those of economical frontier models such as GPT-5.6 Luna (Low), Gemini 3.5 Flash-Lite, and Claude Haiku 4.5. It features an impressive generation rate of 1,107 tokens per second on widely used NVIDIA GPUs and can handle a substantial 260K-token context window. Among its many attributes are customizable reasoning abilities, concurrent tool executions, and JSON compatibility with schemas. Designed specifically for tasks sensitive to latency, it excels in environments that require multiple model calls during one interaction. In various applications, including search agents and RAG pipelines, Mercury 2.5 performs exceptionally well in activities such as planning, query rewriting, re-ranking, fact structuring, source summarization, and answer verification. This efficiency ensures swift response times, making it a vital asset for developers aiming to enhance their workflow productivity. As technology continues to evolve, models like Mercury 2.5 will likely set new benchmarks in the industry.

What is GPT-5.6 Luna?

GPT-5.6 Luna is the lowest-cost model in OpenAI’s GPT-5.6 family, built for fast and affordable AI assistance across everyday and technical workflows. The GPT-5.6 lineup includes Sol as the flagship model, Terra as the balanced model for everyday work, and Luna as the efficient model for users who need strong capability at lower cost. Luna is intended for developers, businesses, and teams that need scalable AI for coding help, workflow automation, research support, analysis, customer-facing applications, and high-volume API usage. In the pasted preview text, Luna is presented as part of the same GPT-5.6 release process and benchmark set as Sol and Terra. It appears in evaluations for command-line coding workflows, long-horizon biology tasks, ExploitBench, and ExploitGym, indicating that it is designed to handle more than simple chat use cases. The model is priced at a lower per-token rate than Sol and Terra, making it more suitable for applications where cost efficiency is a major priority. GPT-5.6 Luna also supports the new GPT-5.6 prompt caching approach, including explicit cache breakpoints, a 30-minute minimum cache life, cache writes billed above the uncached input rate, and discounted cached-input reads. Like the rest of the GPT-5.6 family, Luna is developed with layered safeguards matched to model capability. These safeguards include trained refusals for prohibited cyber assistance, real-time misuse classifiers, paused generation for higher-risk cases, account-level review, monitoring, enforcement, automated red-teaming, and third-party human expert red-teaming. Luna is expected to support legitimate defensive and technical workflows such as code review, debugging, patch development, security education, and defensive testing while making prohibited misuse more difficult and detectable. GPT-5.6 Luna helps organizations deploy GPT-5.6-class AI where speed, affordability, scalability, and safe production use are the most important requirements.

Media

Media

Integrations Supported

.NET
Amp
Auggie CLI
ChatGPT Go
Cosmos
GPT-5.1-Codex
GPT-5.4 mini
HTML
Lorka
NextDocs
Novelcrafter
OpenClaw
Pi Agent
PowerShell
React
SQL
SimpleClaw
TypeScript
XML
Xcode

API Availability

Has API

API Availability

Has API

Pricing Information

Pricing not provided

Pricing Information

$0.20 per 1M tokens (input)
$0.20 input / $1.20 output per 1 million tokens

Supported Platforms

SaaS

Supported Platforms

SaaS

Customer Service / Support

Web-Based Support

Customer Service / Support

Web-Based Support

Training Options

Documentation Hub
Online Training

Training Options

Documentation Hub

Company Facts

Organization Name

Inception

Company Location

United States

Company Website

www.inceptionlabs.ai/models

Company Facts

Organization Name

OpenAI

Date Founded

2015

Company Location

United States

Company Website

openai.com

Categories and Features

AI Models

Not specified

AI Reasoning Models

Not specified

Large Language Models

Not specified

Categories and Features

AI Coding Models

Not specified

AI Models

Not specified

AI Reasoning Models

Not specified

AI Vision Models

Not specified

Foundation Models

Not specified

Large Language Models

Not specified

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