Claude Sonnet 5.5 vs Seed 2.0 Mini

Q: Is Claude Sonnet 5.5 cheaper than Seed 2.0 Mini?

Seed 2.0 Mini is 20.0x cheaper for input tokens. Claude Sonnet 5.5 costs $2.00/M input and $10.00/M output via anthropic. Seed 2.0 Mini costs $0.10/M input and $0.40/M output via deepinfra.

Q: What are the context window sizes for Claude Sonnet 5.5 and Seed 2.0 Mini?

Claude Sonnet 5.5 supports 1.0M tokens and Seed 2.0 Mini supports 256K tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

Q: What are the main differences between Claude Sonnet 5.5 and Seed 2.0 Mini?

Key differences include LLM Stats Score (58.4 vs 27.8), context window (1.0M vs 256K), input pricing ($2.00 vs $0.10/M). See the full comparison above for benchmark-by-benchmark results.

Q: Who makes Claude Sonnet 5.5 and Seed 2.0 Mini?

Claude Sonnet 5.5 is developed by Anthropic and Seed 2.0 Mini is developed by ByteDance.

Claude Sonnet 5.5 leads the LLM Stats Score 58.4 to 27.8. Seed 2.0 Mini is 22.9x cheaper per token.

Anthropic · ByteDance · Updated for 2026

Which is better?

Claude Sonnet 5.5 leads the overall LLM Stats Score 58.4 to 27.8, ranking #2 overall.

In the 2 individual benchmarks reported for both models, Claude Sonnet 5.5 wins 2; this is a narrower head-to-head signal than the composite indexes.

On price, Seed 2.0 Mini is roughly 22.9x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

Claude Sonnet 5.5 also accepts a larger context window (1,000,000 input tokens), making it the stronger choice for long documents and large codebases.

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

Choose Claude Sonnet 5.5

overall performance matters — it scores 58.4 and ranks #2 on LLM Stats
your work emphasizes reasoning and coding — it leads those capability indexes
you value its reported benchmark strengths — it wins 2 of 2 exact shared results
you process long inputs — it offers a 1,000,000 token context window
you want the most recent training data — it shipped Sep 2026

Choose Seed 2.0 Mini

cost matters — it's about 22.9x cheaper per token

At a glance

The differences that matter most.

Better token value: Seed 2.0 Mini

Core performance indexes

LLM Stats Score

58.4

#2 · 34 evals

Best

27.8

#159 · 79 evals

Reasoning

57.2

#3 · 24 evals

Best

28.7

#148 · 59 evals

Coding

47.6

#2 · 13 evals

Best

1.5

#254 · 1 evals

Agents

43.3

#3 · 21 evals

Best

1.1

#195 · 1 evals

Cost, coverage & limits

Benchmark wins

2 of 2

Best

0 of 2

Input price

$2.00 / M

$0.10 / M

Best

Output price

$10.00 / M

$0.40 / M

Best

Context window

1,000,000

Best

256,000

Capability indexes

Additional strengths measured across groups of related public benchmarks

3 shared

Index

Claude Sonnet 5.5

Seed 2.0 Mini

Math

38.7#25 · 3 evals

26.4#111 · 14 evals

Vision

41.5#2 · 8 evals

17.9#97 · 49 evals

Multimodal

41.1#2 · 7 evals

21.2#80 · 42 evals

Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

47 reported for Claude Sonnet 5.5 · 83 for Seed 2.0 Mini

2 shared

Claude Sonnet 5.5 outperforms in 2 benchmarks (HealthBench, Humanity's Last Exam (no tools, text-only)), while Seed 2.0 Mini is better at 0 benchmarks.

Claude Sonnet 5.5 significantly outperforms across most benchmarks.

Sat Oct 24 2026 • llm-stats.com

Human preference

Blind head-to-head votes and playground preference scores

Pricing Analysis

Price comparison per million tokens

Seed 2.0 Mini costs less

For input processing, Claude Sonnet 5.5 ($2.00/1M tokens) is 20.0x more expensive than Seed 2.0 Mini ($0.10/1M tokens).

For output processing, Claude Sonnet 5.5 ($10.00/1M tokens) is 25.0x more expensive than Seed 2.0 Mini ($0.40/1M tokens).

In conclusion, Claude Sonnet 5.5 is more expensive than Seed 2.0 Mini.*

* Using a 3:1 ratio of input to output tokens

Lowest available price from all providers

Sat Oct 24 2026 • llm-stats.com

Claude Sonnet 5.5

Input tokens$2.00

Output tokens$10.00

Best providerAnthropic

Seed 2.0 Mini

Input tokens$0.10

Output tokens$0.40

Best providerDeepinfra

Notice missing or incorrect data?

Context Window

Maximum input and output token capacity

Claude Sonnet 5.5 accepts 1,000,000 input tokens compared to Seed 2.0 Mini's 256,000 tokens. Seed 2.0 Mini can generate longer responses up to 256,000 tokens, while Claude Sonnet 5.5 is limited to 128,000 tokens.

Claude Sonnet 5.5

Input1,000,000 tokens

Output128,000 tokens

Seed 2.0 Mini

Input256,000 tokens

Output256,000 tokens

Sat Oct 24 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Both Claude Sonnet 5.5 and Seed 2.0 Mini support multimodal inputs.

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

Claude Sonnet 5.5

Text

Images

Audio

Video

Seed 2.0 Mini

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.

Claude Sonnet 5.5

Proprietary

Closed source

Seed 2.0 Mini

Proprietary

Closed source

Release Timeline

When each model was launched

Claude Sonnet 5.5 was released on 2026-09-28, while Seed 2.0 Mini was released on 2026-02-17.

Claude Sonnet 5.5 is 7 months newer than Seed 2.0 Mini.

Claude Sonnet 5.5

Sep 28, 2026

3 weeks ago

7mo newer

Seed 2.0 Mini

Feb 17, 2026

8 months ago

Knowledge Cutoff

When training data ends

Claude Sonnet 5.5 has a documented knowledge cutoff of 2026-06-01, while Seed 2.0 Mini's cutoff date is not specified.

We can confirm Claude Sonnet 5.5's training data extends to 2026-06-01, but cannot make a direct comparison without Seed 2.0 Mini's cutoff date.

Claude Sonnet 5.5

Jun 2026

Seed 2.0 Mini

—

Provider Availability

Claude Sonnet 5.5 is available from Anthropic. Seed 2.0 Mini is available from DeepInfra.

Claude Sonnet 5.5

Anthropic

Input Price:Input: $2.00/1MOutput Price:Output: $10.00/1M

Seed 2.0 Mini

Deepinfra

Input Price:Input: $0.10/1MOutput Price:Output: $0.40/1M

* Prices shown are per million tokens

Outputs Comparison

Notice missing or incorrect data?

Judge for yourself.

Run your own prompts against Claude Sonnet 5.5 and Seed 2.0 Mini side-by-side, then vote on the output you prefer.

Claude Sonnet 5.5

✓ Preferred

Seed 2.0 Mini

Open in Playground

FAQ

Common questions about Claude Sonnet 5.5 vs Seed 2.0 Mini.

Which is better, Claude Sonnet 5.5 or Seed 2.0 Mini?

Claude Sonnet 5.5 leads the LLM Stats Score 58.4 to 27.8. Claude Sonnet 5.5 is made by Anthropic and Seed 2.0 Mini is made by ByteDance. The best choice depends on your use case — compare their capability indexes, individual benchmarks, pricing, and limits above.

How does Claude Sonnet 5.5 compare to Seed 2.0 Mini in benchmarks?

Claude Sonnet 5.5 scores BenchCAD (with Python tool): 96.3%, ArXivMath (with tools): 95.2%, Global-MMLU: 92.1%, MILU: 91.6%, SWE-bench Multilingual: 90.3%. Seed 2.0 Mini scores CountBench: 95.5%, VLMsAreBlind: 93.1%, Graphwalks parents <128k: 93.0%, CharXiv-D: 91.9%, LongFact Concepts: 91.4%.

Is Claude Sonnet 5.5 cheaper than Seed 2.0 Mini?

Seed 2.0 Mini is 20.0x cheaper for input tokens. Claude Sonnet 5.5 costs $2.00/M input and $10.00/M output via anthropic. Seed 2.0 Mini costs $0.10/M input and $0.40/M output via deepinfra.

What are the context window sizes for Claude Sonnet 5.5 and Seed 2.0 Mini?

Claude Sonnet 5.5 supports 1.0M tokens and Seed 2.0 Mini 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 Claude Sonnet 5.5 and Seed 2.0 Mini?

Key differences include LLM Stats Score (58.4 vs 27.8), context window (1.0M vs 256K), input pricing ($2.00 vs $0.10/M). See the full comparison above for benchmark-by-benchmark results.

Who makes Claude Sonnet 5.5 and Seed 2.0 Mini?

Claude Sonnet 5.5 is developed by Anthropic and Seed 2.0 Mini is developed by ByteDance.

Claude Sonnet 5.5 vs Seed 2.0 Mini

Which is better?

Choose Claude Sonnet 5.5

Choose Seed 2.0 Mini

At a glance

Capability indexes

Individual benchmarks

Human preference

Pricing Analysis

Context Window

Input capabilities

Claude Sonnet 5.5

Seed 2.0 Mini

License

Release Timeline

Knowledge Cutoff

Provider Availability

Claude Sonnet 5.5

Seed 2.0 Mini

Outputs Comparison

Judge for yourself.

FAQ

Which is better, Claude Sonnet 5.5 or Seed 2.0 Mini?

How does Claude Sonnet 5.5 compare to Seed 2.0 Mini in benchmarks?

Is Claude Sonnet 5.5 cheaper than Seed 2.0 Mini?

What are the context window sizes for Claude Sonnet 5.5 and Seed 2.0 Mini?

What are the main differences between Claude Sonnet 5.5 and Seed 2.0 Mini?

Who makes Claude Sonnet 5.5 and Seed 2.0 Mini?

More Claude Sonnet 5.5 comparisons

More Seed 2.0 Mini comparisons

Claude Sonnet 5.5 vs Seed 2.0 Mini

Which is better?

Choose Claude Sonnet 5.5

Choose Seed 2.0 Mini

At a glance

Capability indexes

Individual benchmarks

Human preference

Pricing Analysis

Context Window

Input capabilities

Claude Sonnet 5.5

Seed 2.0 Mini

License

Release Timeline

Knowledge Cutoff

Provider Availability

Claude Sonnet 5.5

Seed 2.0 Mini

Outputs Comparison

Judge for yourself.

Which is better, Claude Sonnet 5.5 or Seed 2.0 Mini?

How does Claude Sonnet 5.5 compare to Seed 2.0 Mini in benchmarks?

Is Claude Sonnet 5.5 cheaper than Seed 2.0 Mini?

What are the context window sizes for Claude Sonnet 5.5 and Seed 2.0 Mini?

What are the main differences between Claude Sonnet 5.5 and Seed 2.0 Mini?

Who makes Claude Sonnet 5.5 and Seed 2.0 Mini?

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