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Ling 3.0 Flash vs Seed 2.1 Pro

Seed 2.1 Pro leads the LLM Stats Score 45.8 to 36.0.

InclusionAI · ByteDance · Updated for 2026

Which is better?

Seed 2.1 Pro leads the overall LLM Stats Score 45.8 to 36.0, ranking #35 overall.

In the 5 individual benchmarks reported for both models, Seed 2.1 Pro 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 Ling 3.0 Flash

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

Choose Seed 2.1 Pro

  • overall performance matters — it scores 45.8 and ranks #35 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

At a glance

The differences that matter most.

Ling 3.0 Flash
InclusionAI
Seed 2.1 Pro
ByteDance
Core performance indexes
LLM Stats Score
36.0
#92
45.8
#35
Reasoning
35.3
#94
47.1
#29
Coding
24.5
#84
32.0
#48
Agents
18.9
#79
30.9
#36
Cost, coverage & limits
Benchmark wins
1 of 5
4 of 5
Input price
$0.06 / M
— / M
Output price
$0.18 / M
— / M
Context window
131,072
—

Capability indexes

Additional strengths measured across groups of related public benchmarks

2 shared
Index
Ling 3.0 Flash
Seed 2.1 Pro
Math
29.8#85
40.0#15
Tool use
15.9#93
24.2#39
Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

19 reported for Ling 3.0 Flash · 94 for Seed 2.1 Pro

5 shared

Ling 3.0 Flash outperforms in 1 benchmarks (Artifacts Bench), while Seed 2.1 Pro is better at 4 benchmarks (BrowseComp, MCP Atlas, SWE-Bench Pro, Terminal-Bench 2.1).

Seed 2.1 Pro significantly outperforms across most benchmarks.

Fri Oct 09 2026 • llm-stats.com

Human preference

Blind head-to-head votes and playground preference scores

Context Window

Maximum input and output token capacity

Only Ling 3.0 Flash specifies input context (131,072 tokens). Only Ling 3.0 Flash specifies output context (131,072 tokens).

InclusionAI
Ling 3.0 Flash
Input131,072 tokens
Output131,072 tokens
ByteDance
Seed 2.1 Pro
Input- tokens
Output- tokens
Fri Oct 09 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Seed 2.1 Pro supports multimodal inputs, whereas Ling 3.0 Flash does not.

Seed 2.1 Pro can handle both text and other forms of data like images, making it suitable for multimodal applications.

Ling 3.0 Flash

Text
Images
Audio
Video

Seed 2.1 Pro

Text
Images
Audio
Video

Release Timeline

When each model was launched

Ling 3.0 Flash was released on 2026-08-04, while Seed 2.1 Pro was released on 2026-06-24.

Ling 3.0 Flash is 1 month newer than Seed 2.1 Pro.

Ling 3.0 Flash

Aug 4, 2026

2 months ago

1mo newer
Seed 2.1 Pro

Jun 24, 2026

3 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 Ling 3.0 Flash and Seed 2.1 Pro side-by-side, then vote on the output you prefer.

Ling 3.0 Flash
✓ Preferred
Seed 2.1 Pro
Open in Playground

FAQ

Common questions about Ling 3.0 Flash vs Seed 2.1 Pro.

Which is better, Ling 3.0 Flash or Seed 2.1 Pro?

Seed 2.1 Pro leads the LLM Stats Score 45.8 to 36.0. Ling 3.0 Flash is made by InclusionAI and Seed 2.1 Pro is made by ByteDance. The best choice depends on your use case — compare their capability indexes, individual benchmarks, pricing, and limits above.

How does Ling 3.0 Flash compare to Seed 2.1 Pro in benchmarks?

Ling 3.0 Flash scores AIME 2026: 93.2%, Multi-IF: 87.7%, HMMT Feb 26: 87.0%, IMO-AnswerBench: 83.7%, LiveCodeBench v6: 82.8%. Seed 2.1 Pro scores CharXiv-D: 95.5%, MathVision: 94.5%, MathVista: 90.7%, MathVerse: 89.7%, Video-MME: 89.2%.

What are the context window sizes for Ling 3.0 Flash and Seed 2.1 Pro?

Ling 3.0 Flash supports 131K tokens and Seed 2.1 Pro 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 Ling 3.0 Flash and Seed 2.1 Pro?

Key differences include LLM Stats Score (36.0 vs 45.8), multimodal support (no vs yes), licensing (Unknown vs Proprietary). See the full comparison above for benchmark-by-benchmark results.

Who makes Ling 3.0 Flash and Seed 2.1 Pro?

Ling 3.0 Flash is developed by InclusionAI and Seed 2.1 Pro is developed by ByteDance.

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