Model Comparison

Claude Opus 5 vs ERNIE 5.0Which is better in 2026?

Claude Opus 5 significantly outperforms across most benchmarks.

Verdict: Claude Opus 5 vs ERNIE 5.0 — which is better?

Claude Opus 5 (by Anthropic) and ERNIE 5.0 (by Baidu) 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 5 outperforms in 1 benchmarks (Humanity's Last Exam), while ERNIE 5.0 is better at 0 benchmarks. Claude Opus 5 significantly outperforms across most benchmarks.

Choose Claude Opus 5 if…

  • you want the strongest raw capability — it leads on 1 of 1 shared benchmarks
  • you want the most recent training data — it shipped Jul 2026

Choose ERNIE 5.0 if…

  • you are already invested in the Baidu ecosystem

Performance Benchmarks

Comparative analysis across standard metrics

1 benchmarks

Claude Opus 5 outperforms in 1 benchmarks (Humanity's Last Exam), while ERNIE 5.0 is better at 0 benchmarks.

Claude Opus 5 significantly outperforms across most benchmarks.

Sun Jul 26 2026 • llm-stats.com

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
Baidu
ERNIE 5.0
Input- tokens
Output- tokens
Sun Jul 26 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both Claude Opus 5 and ERNIE 5.0 support multimodal inputs.

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

Claude Opus 5

Text
Images
Audio
Video

ERNIE 5.0

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

ERNIE 5.0

Proprietary

Closed source

Release Timeline

When each model was launched

Claude Opus 5 was released on 2026-07-24, while ERNIE 5.0 was released on 2026-01-22.

Claude Opus 5 is 6 months newer than ERNIE 5.0.

Claude Opus 5

Jul 24, 2026

1 days ago

6mo newer
ERNIE 5.0

Jan 22, 2026

6 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?Start an Issue discussion→

Key Takeaways

Anthropic
Larger context window (1,000,000 tokens)
Higher Humanity's Last Exam score (64.7% vs 39.0%)
Baidu

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 ERNIE 5.0 side-by-side, then vote on the output you prefer.

Claude Opus 5
✓ Preferred
ERNIE 5.0
Open in Playground
AI Model Comparison Table
Feature
Anthropic
Claude Opus 5
Baidu
ERNIE 5.0

FAQ

Common questions about Claude Opus 5 vs ERNIE 5.0.

Which is better, Claude Opus 5 or ERNIE 5.0?

Claude Opus 5 significantly outperforms across most benchmarks. Claude Opus 5 is made by Anthropic and ERNIE 5.0 is made by Baidu. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does Claude Opus 5 compare to ERNIE 5.0 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%. ERNIE 5.0 scores AIME 2025: 87.0%, MMLU-Pro: 87.0%, GPQA: 85.0%, SimpleQA: 75.0%, Humanity's Last Exam: 39.0%.

What are the context window sizes for Claude Opus 5 and ERNIE 5.0?

Claude Opus 5 supports 1.0M tokens and ERNIE 5.0 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 ERNIE 5.0?

Claude Opus 5 is developed by Anthropic and ERNIE 5.0 is developed by Baidu.

Related comparisons