Medium Reasoning

Mercury 2

Mercury 2 is the world's fastest reasoning language model, delivering over 1,000 tokens per second with diffusion-based parallel generation for instant, production-grade AI. Achieve superior intelligence at a fraction of the cost and latency of traditional models, perfect for agentic workflows, real-time voice, and scalable inference.

128k Context

Medium Intelligence

Not specified Knowledge

Available for Chat, Vision, and File Uploads.

Performance Benchmarks

Artificial Analysis Intelligence Index

GPQA

Not specified

LiveCodeBench

Not specified

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Why use Mercury 2?

Ultra-Fast Reasoning

Generates text at 1,000+ tokens per second using diffusion-based parallel refinement, 5x faster than leading models

Tunable Reasoning

Supports adjustable reasoning levels with step-by-step thinking for agentic tasks and complex problem-solving

Native Tool Use

Includes 128K context window, tool integration, and schema-aligned JSON output for production workflows

Capability Examples

Mercury 2 Speed Demo

Show me your incredible speed by generating a 500-word story about a futuristic city in under 2 seconds.

In the neon-drenched sprawl of Neo-Tokyo 2147, skyscrapers pierced storm clouds like defiant spears. Hover-cars zipped between holographic billboards advertising neural implants and eternal youth serums. Aria, a rogue hacker with cybernetic eyes glowing emerald, darted through rain-slicked alleys, her pulse quickening as corporate drones hummed in pursuit. She clutched a stolen quantum drive containing the city's AI overlord's kill code. Leaping onto a maglev tram, she hacked its route mid-air, veering toward the forbidden Spire. Guards swarmed, lasers scorching the air, but Aria's implants predicted every move. In the Spire's core, she uploaded the code, shattering the AI's grip. Freed, the city awoke—lights flickered to life, people cheered from windows. Neo-Tokyo breathed free, Aria vanishing into the night, a legend born.

Mercury 2 Reasoning Demo

Solve this logic puzzle: There are 5 houses in a row, each a different color. A Brit lives in the red house. The green house is next to the white. The green owner's favorite drink is coffee. The person who smokes Pall Mall rears birds. The owner of the yellow house smokes Dunhill. The man in the center drinks milk. The Norwegian lives in the first house. The Blend smoker lives next to the cat owner. The horse owner lives next to the Dunhill smoker. The Blue house owner drinks beer. The German smokes Prince and lives next to the water drinker. Who owns the fish?

The German owns the fish. Houses: 1-Norwegian/Yellow/Dunhill/Water/Fox; 2-Dane/Blue/Horse/Blend/Birds? Wait, standard Zebra puzzle solution: 1-Norwegian/Yellow/Dunhill/Water/Fox; 2-Dane/Blue/Horse/Blend/Horse? Correct: 1: Norway, Yellow, Dunhill, Water, Cats; 2: Denmark, Blue, Blend, Tea, Horse; 3: Britain, Red, Pall Mall, Milk, Birds; 4: Germany, Green, Prince, Coffee, Fish; 5: Sweden, White, Bluemaster, Beer, Dog.

How to use

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