The AI arena is free today

Open Playground

Model Comparison

Claude Opus 5 vs Seed 2.0 LiteWhich is better in 2026?

Comparing Claude Opus 5 and Seed 2.0 Lite across benchmarks, pricing, and capabilities.

Verdict: Claude Opus 5 vs Seed 2.0 Lite — which is better?

Claude Opus 5 (by Anthropic) and Seed 2.0 Lite (by ByteDance) are two of the AI models people compare most. Here is how they stack up on benchmarks, price and capabilities, and which one to pick in 2026.

Choose Claude Opus 5 if…

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

Choose Seed 2.0 Lite if…

  • you are already invested in the ByteDance ecosystem

Performance Benchmarks

Comparative analysis across standard metrics

No common benchmarks found

Claude Opus 5 and Seed 2.0 Litedon't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.

Arena Performance

Human preference votes

Context Window

Maximum input and output token capacity

Only Claude Opus 5 specifies input context (1,000,000 tokens). Only Claude Opus 5 specifies output context (128,000 tokens).

Anthropic
Claude Opus 5
Input1,000,000 tokens
Output128,000 tokens
ByteDance
Seed 2.0 Lite
Input- tokens
Output- tokens
Thu Aug 06 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both Claude Opus 5 and Seed 2.0 Lite support multimodal inputs.

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

Claude Opus 5

Text
Images
Audio
Video

Seed 2.0 Lite

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 Opus 5

Proprietary

Closed source

Seed 2.0 Lite

Proprietary

Closed source

Release Timeline

When each model was launched

Claude Opus 5 was released on 2026-07-24, while Seed 2.0 Lite was released on 2026-02-14.

Claude Opus 5 is 5 months newer than Seed 2.0 Lite.

Claude Opus 5

Jul 24, 2026

1 weeks ago

5mo newer
Seed 2.0 Lite

Feb 14, 2026

5 months ago

Knowledge Cutoff

When training data ends

Seed 2.0 Lite has a documented knowledge cutoff of 2024-01-01, while Claude Opus 5's cutoff date is not specified.

We can confirm Seed 2.0 Lite's training data extends to 2024-01-01, but cannot make a direct comparison without Claude Opus 5's cutoff date.

Claude Opus 5

—

Seed 2.0 Lite

Jan 2024

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Key Takeaways

Anthropic
Larger context window (1,000,000 tokens)
ByteDance

No standout differentiators in the data we have for this pair.

Detailed Comparison

Interactive Arena

Judge for yourself.

Run your own prompts against Claude Opus 5 and Seed 2.0 Lite side-by-side, then vote on the output you prefer.

Claude Opus 5
✓ Preferred
Seed 2.0 Lite
Open in Playground
AI Model Comparison Table
Feature
Anthropic
Claude Opus 5
ByteDance
Seed 2.0 Lite

FAQ

Common questions about Claude Opus 5 vs Seed 2.0 Lite.

Which is better, Claude Opus 5 or Seed 2.0 Lite?

Claude Opus 5 (Anthropic) and Seed 2.0 Lite (ByteDance) each have strengths in different areas. Compare their benchmark scores, pricing, context windows, and capabilities above to determine which fits your needs.

How does Claude Opus 5 compare to Seed 2.0 Lite in benchmarks?

Claude Opus 5 scores BrowseComp: 90.8%, BioMysteryBench: 90.1%, OSWorld 2.0: 70.6%, DeepSWE 1.1: 68.8%, Humanity's Last Exam: 64.7%. Seed 2.0 Lite scores AIME 2025: 93.0%, AIME 2026: 88.3%, GPQA: 85.1%, LiveCodeBench v6: 81.7%, SWE-Bench Verified: 73.5%.

What are the context window sizes for Claude Opus 5 and Seed 2.0 Lite?

Claude Opus 5 supports 1.0M tokens and Seed 2.0 Lite supports an unknown number of tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

Who makes Claude Opus 5 and Seed 2.0 Lite?

Claude Opus 5 is developed by Anthropic and Seed 2.0 Lite is developed by ByteDance.

Related comparisons