Mercury 2

Feb 2026
Mercury 2
Compare in
on
$0.089per task?
$0.25 / $0.75per 1M in / outcache $0.025
508 tok/sfirst token in 5.6 s?
128Kcontext

Rankingat high effort?

Strong at

A
Instructions#52 of 245
B
Tool calling#92 of 242Reasoning#137 of 336Science#134 of 312
C
Coding#77 of 134Agents & work tasks#102 of 177Long context#190 of 314Knowledge#211 of 320

Benchmarks

all categories
Chat & Knowledge
Humanity's Last Exam17.1#137
AA Omniscience Index-50.7#212
CritPt (physics)0.8#142
AA Intelligence Index 4.3.210.8#204
AA Omniscience · Accuracy21.2#144
AA Omniscience · Hallucination Rate91.2#266
AA-LCR (long context) 1.143.7#192
GDP.pdf · AA all-pass3.8#96
GPQA Diamond77#135
Coding
Terminal-Bench 4.00#77
SciCode37.7#110
Terminal-Bench Hard (version unstated)26.5#68
Terminal-Bench 2.127.3#102
Agents & Tool Use
AutomationBench-AA1.7#104
GDPval-AA (work tasks) 2.1493.8#102
τ³-Banking · AA9.5#94
AA-Briefcase 1.1 · Elo265.1#113
τ²-bench · AA70.8#94
Writing & Language
IFBench (instructions)69.8#52

FAQ

How much does Mercury 2 cost?›

$0.25 per 1M input tokens and $0.75 per 1M output tokens; cached input $0.025 per 1M. A typical benchmark task costs about $0.089 at high effort.

Is Mercury 2 free to use?›

There is no free API; the cheapest paid price is $0.25 per 1M input tokens.

How good is Mercury 2, and what is it best at?›

#137 of 336 in Chat & Knowledge, #77 of 134 in Coding, #104 of 135 in Agents & Tool Use, #131 of 197 in Writing & Language, #96 of 135 in Vision & Documents. Strongest at: Instructions.

Is Mercury 2 better than Gemini 2.5 Pro?›

On Terminal-Bench Hard (version unstated), Mercury 2 scores 26.5 vs 26.5 — about the same. It is 72% cheaper per task.

How can I use Mercury 2?›

Through the API of Inception.

What is the context window of Mercury 2?›

128K tokens, with up to 50K output tokens.

When was Mercury 2 released? Is there a newer version?›

Released 2026-02-20. It has been superseded by Mercury 2.5.

Is Mercury 2 open source?›

No, Mercury 2 is a closed model available through an API. The closest open-weights option here is GLM 5.2.

Can Mercury 2 read images?›

No, it accepts text only.

What is Mercury 2?›

Mercury 2 is a closed language model from inception, released Feb 2026.

What are the best alternatives to Mercury 2?›

MiMo v2.5 (cheaper), GLM 5.2 (open weights).