Noometry

Model comparison

Grok 4.7 vs Mercury 2

Grok 4.7 is the stronger model overall, scoring 53.1 to 39.1 on the Noometry Index. Mercury 2 costs 8.0× less per token, which makes it the better buy when Grok 4.7's lead doesn't matter for your workload.

Last verified . 14 shared benchmarks.

Grok 4.7 xAI

53.1

Rank #37 Confirmed

Mercury 2 Inception

39.1

Rank #175 Confirmed

Summary

  • They share 14 benchmarks with published results for both. Grok 4.7 scores higher in 7 categories and Mercury 2 in 0 categories; 7 gaps are clear of the uncertainty.
  • The widest gap is in knowledge, where Grok 4.7 leads 62.8 to 36.2.
  • The biggest single-benchmark swing is SciCode: 57.8% for Grok 4.7 and 38.7% for Mercury 2.
  • Mercury 2 is cheaper at $0.25 / $0.75 per million input/output tokens, against $2 / $6 for Grok 4.7.
  • Grok 4.7 accepts more context: 500K tokens versus 128K.

Side by side

Grok 4.7Mercury 2
ProviderxAIInception
Noometry Index53.139.1
Released2026-09-212026-02-20
WeightsProprietaryProprietary
Context window500K128K
Max output500K50K
Input $ / M tokens$2$0.25
Output $ / M tokens$6$0.75
Results tracked3917

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Category by category

Coding Grok 4.7 leads

Grok 4.7: 58.0 (#18), Mercury 2: 33.5 (#255)

BenchmarkGrok 4.7Mercury 2
LMArena WebDev16391171
SciCode57.8%38.7%
LMArena Coding14271391
FrontierCode47.6%—
CursorBench46.3%—
FrontierSWE29.5%—
WeirdML—43.2%
ALE-Bench—785.58

Agentic & Tool Use Not comparable

Grok 4.7: 36.7 (#37), Mercury 2: —

BenchmarkGrok 4.7Mercury 2
APEX-Agents54.6%—
GDP.pdf22.8%—
Vending-Bench 210,537—

Reasoning Grok 4.7 leads

Grok 4.7: 49.1 (#40), Mercury 2: 23.8 (#170)

BenchmarkGrok 4.7Mercury 2
CritPt18%0.8%
LMArena Hard Prompts14131362
NYT Connections (extended)76.8%—
Chess Puzzles38%—
Mystery Game Puzzles29%—
DTBench96%—
LMCA49.4%—
Epoch Capabilities Index153.53—

Math Not comparable

Grok 4.7: 57.8 (#39), Mercury 2: —

BenchmarkGrok 4.7Mercury 2
FrontierMath (Tiers 1-3)53%—
FrontierMath Tier 417.1%—
OTIS Mock AIME 2024-202598.1%—
ProofBench34%—
LMArena Math1407—

Knowledge Grok 4.7 leads

Grok 4.7: 62.8 (#22), Mercury 2: 36.2 (#172)

BenchmarkGrok 4.7Mercury 2
LMArena Expert14221358
GPQA Diamond92.7%—
SimpleQA Verified56%—
Vectara Hallucination Rate—12.3%

Multimodal Not comparable

Grok 4.7: 35.5 (#87), Mercury 2: —

BenchmarkGrok 4.7Mercury 2
LMArena Vision1228—
Blueprint-Bench 232.5%—
Furniture Assembly20.8%—

Multilingual Grok 4.7 leads

Grok 4.7: 50.8 (#116), Mercury 2: 46.6 (#157)

BenchmarkGrok 4.7Mercury 2
LMArena Non-English13891331
LMArena Chinese14551417
LMArena Russian13971304
LMArena French1455—
LMArena Spanish1400—

Instruction Following Grok 4.7 leads

Grok 4.7: 74.1 (#105), Mercury 2: 70.2 (#165)

BenchmarkGrok 4.7Mercury 2
LMArena Instruction Following14041329

Long Context Grok 4.7 leads

Grok 4.7: 43.1 (#104), Mercury 2: 40.5 (#154)

BenchmarkGrok 4.7Mercury 2
LMArena Longer Query14131330

Writing & Preference Grok 4.7 leads

Grok 4.7: 70.0 (#24), Mercury 2: 53.8 (#155)

BenchmarkGrok 4.7Mercury 2
LMArena Text13991355
LMArena Creative Writing13911289
LMArena Multi-Turn13931358
EQ-Bench Creative Writing2007—

Frequently asked questions

Is Grok 4.7 better than Mercury 2?

Grok 4.7 is the stronger model overall, scoring 53.1 to 39.1 on the Noometry Index. Mercury 2 costs 8.0× less per token, which makes it the better buy when Grok 4.7's lead doesn't matter for your workload.

Which is cheaper, Grok 4.7 or Mercury 2?

Mercury 2 is cheaper. It lists at $0.25 per million input tokens and $0.75 per million output tokens; Grok 4.7 lists at $2 and $6.

Is Grok 4.7 or Mercury 2 better for coding?

Grok 4.7 scores higher on coding benchmarks: 58.0 versus 33.5 in the Noometry coding category.

Which has the bigger context window?

Grok 4.7 does, with 500K tokens against 128K.

How many benchmarks do Grok 4.7 and Mercury 2 share?

14 benchmarks have published results for both models. Grok 4.7 has 39 scored results on Noometry and Mercury 2 has 17.

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