The AI arena is free today

Open Superagent

Gemini 3 Flash vs Seed 2.1 Turbo

Seed 2.1 Turbo leads the LLM Stats Score 43.0 to 36.8.

Google · ByteDance · Updated for 2026

Which is better?

Seed 2.1 Turbo leads the overall LLM Stats Score 43.0 to 36.8, ranking #48 overall.

In the 5 individual benchmarks reported for both models, Seed 2.1 Turbo wins 4; 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 3 Flash

  • you want predictable pricing at $0.50/M input and $3.00/M output

Choose Seed 2.1 Turbo

  • overall performance matters — it scores 43.0 and ranks #48 on LLM Stats
  • your work emphasizes reasoning and agents — it leads those capability indexes
  • you value its reported benchmark strengths — it wins 4 of 5 exact shared results
  • you want the most recent training data — it shipped Jun 2026

At a glance

The differences that matter most.

Gemini 3 Flash
Google
Seed 2.1 Turbo
ByteDance
Core performance indexes
LLM Stats Score
36.8
#80
43.0
#48
Reasoning
37.6
#72
44.4
#37
Coding
22.2
#88
30.5
#53
Agents
17.5
#80
28.9
#44
Cost, coverage & limits
Benchmark wins
1 of 5
4 of 5
Input price
$0.50 / M
— / M
Output price
$3.00 / M
— / M
Context window
1,000,000
—

Capability indexes

Additional strengths measured across groups of related public benchmarks

4 shared
Index
Gemini 3 Flash
Seed 2.1 Turbo
Math
37.0#33
39.6#18
Vision
25.5#49
30.4#32
Tool use
15.3#93
19.3#61
Multimodal
27.2#43
33.5#17
Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

24 reported for Gemini 3 Flash · 90 for Seed 2.1 Turbo

5 shared

Gemini 3 Flash outperforms in 1 benchmarks (Toolathlon), while Seed 2.1 Turbo is better at 4 benchmarks (CharXiv-R, Humanity's Last Exam, MCP Atlas, MMMU-Pro).

Seed 2.1 Turbo significantly outperforms across most benchmarks.

Fri Oct 02 2026 • llm-stats.com

Human preference

Blind head-to-head votes and playground preference scores

Context Window

Maximum input and output token capacity

Only Gemini 3 Flash specifies input context (1,000,000 tokens). Only Gemini 3 Flash specifies output context (65,536 tokens).

Google
Gemini 3 Flash
Input1,000,000 tokens
Output65,536 tokens
ByteDance
Seed 2.1 Turbo
Input- tokens
Output- tokens
Fri Oct 02 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Both Gemini 3 Flash and Seed 2.1 Turbo support multimodal inputs.

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

Gemini 3 Flash

Text
Images
Audio
Video

Seed 2.1 Turbo

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 3 Flash

Proprietary

Closed source

Seed 2.1 Turbo

Proprietary

Closed source

Release Timeline

When each model was launched

Gemini 3 Flash was released on 2025-12-17, while Seed 2.1 Turbo was released on 2026-06-24.

Seed 2.1 Turbo is 6 months newer than Gemini 3 Flash.

Gemini 3 Flash

Dec 17, 2025

9 months ago

Seed 2.1 Turbo

Jun 24, 2026

3 months ago

6mo newer

Knowledge Cutoff

When training data ends

Gemini 3 Flash has a documented knowledge cutoff of 2025-01-31, while Seed 2.1 Turbo's cutoff date is not specified.

We can confirm Gemini 3 Flash's training data extends to 2025-01-31, but cannot make a direct comparison without Seed 2.1 Turbo's cutoff date.

Gemini 3 Flash

Jan 2025

Seed 2.1 Turbo

—

Outputs Comparison

Notice missing or incorrect data?

Judge for yourself.

Run your own prompts against Gemini 3 Flash and Seed 2.1 Turbo side-by-side, then vote on the output you prefer.

Gemini 3 Flash
✓ Preferred
Seed 2.1 Turbo
Open in Playground

FAQ

Common questions about Gemini 3 Flash vs Seed 2.1 Turbo.

Which is better, Gemini 3 Flash or Seed 2.1 Turbo?

Seed 2.1 Turbo leads the LLM Stats Score 43.0 to 36.8. Gemini 3 Flash is made by Google and Seed 2.1 Turbo 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 3 Flash compare to Seed 2.1 Turbo in benchmarks?

Gemini 3 Flash scores Vending-Bench 2: 100.0%, AIME 2025: 99.7%, Global PIQA: 92.8%, MMMLU: 91.8%, GPQA: 90.4%. Seed 2.1 Turbo scores CharXiv-D: 94.6%, MathVision: 92.7%, MathVista: 90.5%, MathVerse: 89.2%, Video-MME: 89.0%.

What are the context window sizes for Gemini 3 Flash and Seed 2.1 Turbo?

Gemini 3 Flash supports 1.0M tokens and Seed 2.1 Turbo supports an unknown number of tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between Gemini 3 Flash and Seed 2.1 Turbo?

Key differences include LLM Stats Score (36.8 vs 43.0). See the full comparison above for benchmark-by-benchmark results.

Who makes Gemini 3 Flash and Seed 2.1 Turbo?

Gemini 3 Flash is developed by Google and Seed 2.1 Turbo is developed by ByteDance.

Related comparisons