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Mercury 2


Mercury 2 is Inception logoInception's language model with a 128K context window and up to 50K output tokens, available from 2 providers, starting at $0.250 / 1M input and $0.750 / 1M output. The first reasoning diffusion LLM (dLLM), producing and refining multiple tokens in parallel to deliver fast reasoning with tool-use capabilities.
Spec
Canonical IDinception-mercury-2
TypeLanguage
StatusActive
CreatorInceptionInception
Providers
Context Window128K tokens
Max Output50K tokens
Input ModalitiesText
Output ModalitiesText
Reasoning Effortsdefault
Release Date · 2 months ago
Intelligence Index
32.8
#52
Coding Index
30.6
#47
GPQA
0.8
#59
HLE
0.2
#36
IFBench
0.7
#19
Time to First Token
4.57s
#307
SciCode
0.4
#54
LCR
0.4
#97
TerminalBench Hard
0.3
#46
TAU2
0.7
#57
Output TPS

Capabilities

Input1/5
Text
Image·
Audio·
Video·
PDF·
Output1/5
Text
Image·
Audio·
Video·
Embedding·
Capabilities2/13
Reasoning
Adaptive Reasoning·
Function Calling
Parallel Function Calling·
Structured Outputs·
Native JSON Schema·
Web Search·
URL Context·
Computer Use·
Code Execution·
File Search·
Prompt Caching·
Assistant Prefill·

Pricing by Provider

ProviderStandard
Input
$ / 1M
Output
$ / 1M
Cache Read
$ / 1M
OpenRouter logo
OpenRouter
inception/mercury-2
$0.250$0.750$0.025
Vercel AI Gateway logo
Vercel AI Gateway
inception/mercury-2
$0.250$0.750$0.025

Cost Calculator

Preset:
Compares every provider & tier in USD

Versions

VersionReleasedContextInput / 1MOutput / 1MStatus
Mercury 2128K$0.250$0.750Current
Mercury Coder Small Beta32K$0.250$1.00Available
MercuryAvailable
Mercury CoderAvailable

Model IDs