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Gemini 4 Carbon vs LongCat-2.5

Gemini 4 Carbon leads the LLM Stats Score 58.8 to 50.0.

Google · Meituan · Updated for 2026

Which is better?

Gemini 4 Carbon leads the overall LLM Stats Score 58.8 to 50.0, 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 58.8 and ranks #2 on LLM Stats
  • your work emphasizes reasoning and coding — it leads those capability indexes

Choose LongCat-2.5

  • you want the most recent training data — it shipped Nov 2026

At a glance

The differences that matter most.

Gemini 4 Carbon
Google
LongCat-2.5
Meituan
Core performance indexes
LLM Stats Score
58.8
#2
50.0
#20
Reasoning
54.4
#5
48.3
#21
Coding
48.3
#3
38.6
#27
Agents
45.8
#1
36.3
#23
Cost, coverage & limits
Benchmark wins
—
—
Input price
— / M
$0.30 / M
Output price
— / M
$1.20 / M
Context window
—
1,048,576

Capability indexes

Additional strengths measured across groups of related public benchmarks

3 shared
Index
Gemini 4 Carbon
LongCat-2.5
Vision
36.0#13
32.5#29
Tool use
35.4#3
30.2#15
Multimodal
38.0#6
34.8#15
Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

16 reported for Gemini 4 Carbon · 23 for LongCat-2.5

No common benchmarks found

Gemini 4 Carbon and LongCat-2.5don'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 LongCat-2.5 specifies input context (1,048,576 tokens). Only LongCat-2.5 specifies output context (131,072 tokens).

Google
Gemini 4 Carbon
Input- tokens
Output- tokens
Meituan
LongCat-2.5
Input1,048,576 tokens
Output131,072 tokens
Mon Nov 02 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Both Gemini 4 Carbon and LongCat-2.5 support multimodal inputs.

They are both capable of processing various types of data, offering versatility in application.

Gemini 4 Carbon

Text
Images
Audio
Video

LongCat-2.5

Text
Images
Audio
Video

Release Timeline

When each model was launched

Gemini 4 Carbon was released on 2026-10-28, while LongCat-2.5 was released on 2026-11-01.

LongCat-2.5 is 0 month newer than Gemini 4 Carbon.

Gemini 4 Carbon

Oct 28, 2026

5 days ago

LongCat-2.5

Nov 1, 2026

1 days ago

4d 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?

Judge for yourself.

Run your own prompts against Gemini 4 Carbon and LongCat-2.5 side-by-side, then vote on the output you prefer.

Gemini 4 Carbon
✓ Preferred
LongCat-2.5
Open in Playground

FAQ

Common questions about Gemini 4 Carbon vs LongCat-2.5.

Which is better, Gemini 4 Carbon or LongCat-2.5?

Gemini 4 Carbon leads the LLM Stats Score 58.8 to 50.0. Gemini 4 Carbon is made by Google and LongCat-2.5 is made by Meituan. 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 LongCat-2.5 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%. LongCat-2.5 scores MathVision: 96.5%, BrowseComp: 91.9%, CharXiv-R: 90.2%, Terminal-Bench 2.1: 88.4%, Video-MME: 85.2%.

What are the context window sizes for Gemini 4 Carbon and LongCat-2.5?

Gemini 4 Carbon supports an unknown number of tokens and LongCat-2.5 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 LongCat-2.5?

Key differences include LLM Stats Score (58.8 vs 50.0), licensing (Proprietary vs Unknown). See the full comparison above for benchmark-by-benchmark results.

Who makes Gemini 4 Carbon and LongCat-2.5?

Gemini 4 Carbon is developed by Google and LongCat-2.5 is developed by Meituan.

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