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Gemini 4 Carbon vs Seed 1.8

Gemini 4 Carbon leads the LLM Stats Score 58.8 to 33.6.

Google · ByteDance · Updated for 2026

Which is better?

Gemini 4 Carbon leads the overall LLM Stats Score 58.8 to 33.6, 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
  • you want the most recent training data — it shipped Oct 2026

Choose Seed 1.8

  • you want predictable pricing at $0.25/M input and $2.00/M output

At a glance

The differences that matter most.

Gemini 4 Carbon
Google
Seed 1.8
ByteDance
Core performance indexes
LLM Stats Score
58.8
#2
33.6
#122
Reasoning
54.4
#5
33.0
#123
Coding
48.3
#3
19.8
#125
Agents
45.8
#1
14.3
#120
Cost, coverage & limits
Benchmark wins
—
—
Input price
— / M
$0.25 / M
Output price
— / M
$2.00 / M
Context window
—
256,000

Capability indexes

Additional strengths measured across groups of related public benchmarks

3 shared
Index
Gemini 4 Carbon
Seed 1.8
Vision
36.0#13
24.2#72
Tool use
35.4#3
6.3#176
Multimodal
38.0#6
26.9#54
Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

16 reported for Gemini 4 Carbon · 57 for Seed 1.8

No common benchmarks found

Gemini 4 Carbon and Seed 1.8don'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 Seed 1.8 specifies input context (256,000 tokens). Only Seed 1.8 specifies output context (256,000 tokens).

Google
Gemini 4 Carbon
Input- tokens
Output- tokens
ByteDance
Seed 1.8
Input256,000 tokens
Output256,000 tokens
Mon Nov 02 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Both Gemini 4 Carbon and Seed 1.8 support multimodal inputs.

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

Gemini 4 Carbon

Text
Images
Audio
Video

Seed 1.8

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

Seed 1.8

Proprietary

Closed source

Release Timeline

When each model was launched

Gemini 4 Carbon was released on 2026-10-28, while Seed 1.8 was released on 2026-02-17.

Gemini 4 Carbon is 8 months newer than Seed 1.8.

Gemini 4 Carbon

Oct 28, 2026

5 days ago

8mo newer
Seed 1.8

Feb 17, 2026

8 months 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 Seed 1.8 side-by-side, then vote on the output you prefer.

Gemini 4 Carbon
✓ Preferred
Seed 1.8
Open in Playground

FAQ

Common questions about Gemini 4 Carbon vs Seed 1.8.

Which is better, Gemini 4 Carbon or Seed 1.8?

Gemini 4 Carbon leads the LLM Stats Score 58.8 to 33.6. Gemini 4 Carbon is made by Google and Seed 1.8 is made by ByteDance. 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 Seed 1.8 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%. Seed 1.8 scores CountBench: 96.3%, AIME 2025: 94.3%, VLMsAreBlind: 93.0%, MMLU: 92.3%, AI2D: 89.1%.

What are the context window sizes for Gemini 4 Carbon and Seed 1.8?

Gemini 4 Carbon supports an unknown number of tokens and Seed 1.8 supports 256K 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 Seed 1.8?

Key differences include LLM Stats Score (58.8 vs 33.6). See the full comparison above for benchmark-by-benchmark results.

Who makes Gemini 4 Carbon and Seed 1.8?

Gemini 4 Carbon is developed by Google and Seed 1.8 is developed by ByteDance.

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