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Gemini 4 Carbon vs Mercury 3

Gemini 4 Carbon leads the LLM Stats Score 59.0 to 35.9.

Google · Inception · Updated for 2026

Which is better?

Gemini 4 Carbon leads the overall LLM Stats Score 59.0 to 35.9, ranking #2 overall.

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

Choose Gemini 4 Carbon

  • overall performance matters — it scores 59.0 and ranks #2 on LLM Stats
  • your work emphasizes reasoning and coding — it leads those capability indexes
  • you want the most recent training data — it shipped Oct 2026

Choose Mercury 3

  • you want predictable pricing at $0.10/M input and $0.35/M output

At a glance

The differences that matter most.

Gemini 4 Carbon
Google
Mercury 3
Inception
Core performance indexes
LLM Stats Score
59.0
#2
35.9
#103
Reasoning
54.9
#5
34.6
#108
Coding
48.1
#3
21.7
#107
Agents
46.0
#2
19.3
#90
Cost, coverage & limits
Benchmark wins
—
—
Input price
— / M
$0.10 / M
Output price
— / M
$0.35 / M
Context window
—
1,000,000

Individual benchmarks

16 reported for Gemini 4 Carbon · 12 for Mercury 3

No common benchmarks found

Gemini 4 Carbon and Mercury 3don't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.

Human preference

Blind head-to-head votes and playground preference scores

Context Window

Maximum input and output token capacity

Only Mercury 3 specifies input context (1,000,000 tokens). Only Mercury 3 specifies output context (131,072 tokens).

Google
Gemini 4 Carbon
Input- tokens
Output- tokens
Inception
Mercury 3
Input1,000,000 tokens
Output131,072 tokens
Thu Oct 29 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Gemini 4 Carbon supports multimodal inputs, whereas Mercury 3 does not.

Gemini 4 Carbon can handle both text and other forms of data like images, making it suitable for multimodal applications.

Gemini 4 Carbon

Text
Images
Audio
Video

Mercury 3

Text
Images
Audio
Video

License

Usage and distribution terms

Both models are licensed under proprietary licenses.

Both models have usage restrictions defined by their respective organizations.

Gemini 4 Carbon

Proprietary

Closed source

Mercury 3

Proprietary

Closed source

Release Timeline

When each model was launched

Gemini 4 Carbon was released on 2026-10-28, while Mercury 3 was released on 2026-10-19.

Gemini 4 Carbon is 0 month newer than Mercury 3.

Gemini 4 Carbon

Oct 28, 2026

-2 days ago

1w newer
Mercury 3

Oct 19, 2026

1 weeks ago

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?

Judge for yourself.

Run your own prompts against Gemini 4 Carbon and Mercury 3 side-by-side, then vote on the output you prefer.

Gemini 4 Carbon
✓ Preferred
Mercury 3
Open in Playground

FAQ

Common questions about Gemini 4 Carbon vs Mercury 3.

Which is better, Gemini 4 Carbon or Mercury 3?

Gemini 4 Carbon leads the LLM Stats Score 59.0 to 35.9. Gemini 4 Carbon is made by Google and Mercury 3 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 4 Carbon compare to Mercury 3 in benchmarks?

Gemini 4 Carbon scores Gray Swan IPI Benchmark: 100.0%, Vending-Bench 2: 100.0%, Graphwalks BFS >128k: 96.2%, WebDev Arena: 88.4%, SEC-bench Pro: 88.2%. Mercury 3 scores GPQA: 89.2%, AA-LCR: 77.7%, IFBench: 76.8%, MRCR v2: 75.5%, DeepSearchQA: 71.3%.

What are the context window sizes for Gemini 4 Carbon and Mercury 3?

Gemini 4 Carbon supports an unknown number of tokens and Mercury 3 supports 1.0M tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between Gemini 4 Carbon and Mercury 3?

Key differences include LLM Stats Score (59.0 vs 35.9), multimodal support (yes vs no). See the full comparison above for benchmark-by-benchmark results.

Who makes Gemini 4 Carbon and Mercury 3?

Gemini 4 Carbon is developed by Google and Mercury 3 is developed by Inception.

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