Model Comparison

Claude Opus 4.7 vs Seed 2.1 TurboWhich is better in 2026?

Claude Opus 4.7 shows notably better performance in the majority of benchmarks.

Verdict: Claude Opus 4.7 vs Seed 2.1 Turbo — which is better?

Claude Opus 4.7 (by Anthropic) and Seed 2.1 Turbo (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.

Claude Opus 4.7 outperforms in 4 benchmarks (CharXiv-R, CyberGym, Humanity's Last Exam, SWE-Bench Pro), while Seed 2.1 Turbo is better at 2 benchmarks (BrowseComp, MCP Atlas). Claude Opus 4.7 shows notably better performance in the majority of benchmarks.

Choose Claude Opus 4.7 if…

  • you want the strongest raw capability — it leads on 4 of 6 shared benchmarks

Choose Seed 2.1 Turbo if…

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

Performance Benchmarks

Comparative analysis across standard metrics

6 benchmarks

Claude Opus 4.7 outperforms in 4 benchmarks (CharXiv-R, CyberGym, Humanity's Last Exam, SWE-Bench Pro), while Seed 2.1 Turbo is better at 2 benchmarks (BrowseComp, MCP Atlas).

Claude Opus 4.7 shows notably better performance in the majority of benchmarks.

Fri Jul 17 2026 • llm-stats.com

Arena Performance

Human preference votes

Context Window

Maximum input and output token capacity

Only Claude Opus 4.7 specifies input context (1,000,000 tokens). Only Claude Opus 4.7 specifies output context (128,000 tokens).

Anthropic
Claude Opus 4.7
Input1,000,000 tokens
Output128,000 tokens
ByteDance
Seed 2.1 Turbo
Input- tokens
Output- tokens
Fri Jul 17 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both Claude Opus 4.7 and Seed 2.1 Turbo support multimodal inputs.

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

Claude Opus 4.7

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.

Claude Opus 4.7

Proprietary

Closed source

Seed 2.1 Turbo

Proprietary

Closed source

Release Timeline

When each model was launched

Claude Opus 4.7 was released on 2026-04-16, while Seed 2.1 Turbo was released on 2026-06-24.

Seed 2.1 Turbo is 2 months newer than Claude Opus 4.7.

Claude Opus 4.7

Apr 16, 2026

3 months ago

Seed 2.1 Turbo

Jun 24, 2026

3 weeks ago

2mo newer

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?Start an Issue discussion→

Key Takeaways

Anthropic
Larger context window (1,000,000 tokens)
Higher CharXiv-R score (91.0% vs 83.6%)
Higher CyberGym score (73.1% vs 67.0%)
Higher Humanity's Last Exam score (54.7% vs 54.6%)
Higher SWE-Bench Pro score (64.3% vs 57.0%)
ByteDance
Higher BrowseComp score (84.9% vs 79.3%)
Higher MCP Atlas score (80.3% vs 77.3%)

Detailed Comparison

Interactive Arena

Judge for yourself.

Run your own prompts against Claude Opus 4.7 and Seed 2.1 Turbo side-by-side, then vote on the output you prefer.

Claude Opus 4.7
✓ Preferred
Seed 2.1 Turbo
Open in Playground
AI Model Comparison Table
Feature
Anthropic
Claude Opus 4.7
ByteDance
Seed 2.1 Turbo

FAQ

Common questions about Claude Opus 4.7 vs Seed 2.1 Turbo.

Which is better, Claude Opus 4.7 or Seed 2.1 Turbo?

Claude Opus 4.7 shows notably better performance in the majority of benchmarks. Claude Opus 4.7 is made by Anthropic and Seed 2.1 Turbo is made by ByteDance. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does Claude Opus 4.7 compare to Seed 2.1 Turbo in benchmarks?

Claude Opus 4.7 scores GPQA: 94.2%, MMMLU: 91.5%, CharXiv-R: 91.0%, SWE-Bench Verified: 87.6%, BrowseComp: 79.3%. 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 Claude Opus 4.7 and Seed 2.1 Turbo?

Claude Opus 4.7 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.

Who makes Claude Opus 4.7 and Seed 2.1 Turbo?

Claude Opus 4.7 is developed by Anthropic and Seed 2.1 Turbo is developed by ByteDance.

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