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Gemini Diffusion vs Mercury 2

Mercury 2 leads the LLM Stats Score 23.7 to 1.0.

Google · Inception · Updated for 2026

Which is better?

Mercury 2 leads the overall LLM Stats Score 23.7 to 1.0, ranking #164 overall.

In the 3 individual benchmarks reported for both models, Mercury 2 wins 3; this is a narrower head-to-head signal than the composite indexes.

Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.

Choose Gemini Diffusion

  • you are already invested in the Google ecosystem

Choose Mercury 2

  • overall performance matters — it scores 23.7 and ranks #164 on LLM Stats
  • your work emphasizes reasoning and coding — it leads those capability indexes
  • you value its reported benchmark strengths — it wins 3 of 3 exact shared results
  • you want the most recent training data — it shipped Feb 2026

At a glance

The differences that matter most.

Gemini Diffusion
Google
Mercury 2
Inception
Core performance indexes
LLM Stats Score
1.0
#311
23.7
#164
Reasoning
1.0
#301
22.8
#158
Coding
3.0
#213
12.7
#136
Cost, coverage & limits
Benchmark wins
0 of 3
3 of 3
Input price
— / M
$0.25 / M
Output price
— / M
$0.75 / M
Context window
—
128,000

Individual benchmarks

10 reported for Gemini Diffusion · 6 for Mercury 2

3 shared

Gemini Diffusion outperforms in 0 benchmarks, while Mercury 2 is better at 3 benchmarks (AIME 2025, GPQA, LiveCodeBench).

Mercury 2 significantly outperforms across most benchmarks.

Fri Sep 04 2026 • llm-stats.com

Human preference

Blind head-to-head votes and playground preference scores

Context Window

Maximum input and output token capacity

Only Mercury 2 specifies input context (128,000 tokens). Only Mercury 2 specifies output context (8,192 tokens).

Google
Gemini Diffusion
Input- tokens
Output- tokens
Inception
Mercury 2
Input128,000 tokens
Output8,192 tokens
Fri Sep 04 2026 • llm-stats.com

License

Usage and distribution terms

Both models are licensed under proprietary licenses.

Both models have usage restrictions defined by their respective organizations.

Gemini Diffusion

Proprietary

Closed source

Mercury 2

Proprietary

Closed source

Release Timeline

When each model was launched

Gemini Diffusion was released on 2025-05-20, while Mercury 2 was released on 2026-02-24.

Mercury 2 is 9 months newer than Gemini Diffusion.

Gemini Diffusion

May 20, 2025

1.3 years ago

Mercury 2

Feb 24, 2026

6 months ago

9mo newer

Knowledge Cutoff

When training data ends

Neither model specifies a knowledge cutoff date.

Unable to compare the recency of their training data.

No cutoff dates available

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Judge for yourself.

Run your own prompts against Gemini Diffusion and Mercury 2 side-by-side, then vote on the output you prefer.

Gemini Diffusion
✓ Preferred
Mercury 2
Open in Playground

FAQ

Common questions about Gemini Diffusion vs Mercury 2.

Which is better, Gemini Diffusion or Mercury 2?

Mercury 2 leads the LLM Stats Score 23.7 to 1.0. Gemini Diffusion is made by Google and Mercury 2 is made by Inception. The best choice depends on your use case — compare their capability indexes, individual benchmarks, pricing, and limits above.

How does Gemini Diffusion compare to Mercury 2 in benchmarks?

Gemini Diffusion scores HumanEval: 89.6%, MBPP: 76.0%, Global-MMLU-Lite: 69.1%, LBPP (v2): 56.8%, BigCodeBench: 45.4%. Mercury 2 scores AIME 2025: 91.1%, GPQA: 74.0%, IFBench: 71.0%, LiveCodeBench: 67.0%, Tau2 Airline: 53.0%.

What are the context window sizes for Gemini Diffusion and Mercury 2?

Gemini Diffusion supports an unknown number of tokens and Mercury 2 supports 128K tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between Gemini Diffusion and Mercury 2?

Key differences include LLM Stats Score (1.0 vs 23.7). See the full comparison above for benchmark-by-benchmark results.

Who makes Gemini Diffusion and Mercury 2?

Gemini Diffusion is developed by Google and Mercury 2 is developed by Inception.

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