Decision support

Claude Mythos 5 vs ERNIE 5.1

Compare canonical objects directly. The useful dimensions change with the object type, so model and hardware comparisons stay separate.

Benchmark results

  • Arena Text

    Arena rating · Higher is better

    • Claude Mythos 5
      Not reported
    • ERNIE 5.1
      1467
      Arena #52CI 1462 to 1472
    Runs and sources
    Claude Mythos 5

    Not reported

    ERNIE 5.1
    • default146795% CI 1462 to 1472 · 39,029 votes
  • Arena Search

    Arena rating · Higher is better

    • Claude Mythos 5
      Not reported
    • ERNIE 5.1
      1192
      Arena #25CI 1182 to 1201
    Runs and sources
    Claude Mythos 5

    Not reported

    ERNIE 5.1
    • default119295% CI 1182 to 1201 · 3,925 votes

Each model's best published result is shown; "Not reported" means no matched evaluation, not a score of zero. Arena and DeepSWE ranks are the leaderboards' own; other ranks are among catalogue models with a score. Results from different harnesses or settings are not directly comparable.

Arena ratings: Arena (lmarena-ai/leaderboard-dataset), licensed CC BY 4.0. Ratings come from pairwise human votes and are only comparable within one leaderboard; the interval is Arena's 95% confidence interval. Model names are matched to the Vertical Tabs catalog.

Model specifications

Release date
June 9, 2026
May 8, 2026
Context window
1M
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Native context
—
—
Max output tokens
128,000
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Knowledge cutoff
2026-01-31
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Open weights
Closed
Closed
Parameter count
—
—

API pricing · USD per 1M tokens

Input
—
—
Output
—
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Cached input
—
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Cache write
—
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Capabilities and modalities

Input modalities
text, image, file
text
Output modalities
text
text
Tool calling
Supported
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Reasoning option
Supported
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Supported options
tools, structured_outputs, reasoning
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Capabilities
—
—

Architecture and availability

Architecture
—
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Model families
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Tokenizer
—
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Instruction format
—
—
License
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proprietary
Providers
0
0
Provider endpoints
0
0
Ollama variants
0
0
Metadata source
ai-research
curated

A dash means the field is not reported. Provider-specific performance and pricing may differ.

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