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Pyyan / Compare / ERNIE 5.1 vs Claude Opus 5

ERNIE 5.1 vs Claude Opus 5

2 of 5

Language Models · verified 13 Aug 2026

ERNIE 5.1Baiducurrent
Claude Opus 5Anthropiccurrent
3 slots left
SpecificationERNIE 5.1Claude Opus 5
SummaryBaidu's closed frontier tier.Complex agentic coding and enterprise work at half the cost of Fable 5.
Context—1M
Input ($/Mtok)—$5
Output ($/Mtok)—$25
LicenceProprietaryProprietary
Max output—128K
Released8 May 202624 Jul 2026
Model ID—claude-opus-5
CategoryLanguage ModelsLanguage Models
OfficialBaidu ↗Anthropic ↗

Highlighted rows are where these differ.

ERNIE 5.1

  • ERNIE 4.5 is open; 5.x is API-only

Best for Chinese enterprise.

Full spec sheet →

Claude Opus 5

  • Thinking on by default — a step change over Opus 4.8
  • 512-token prompt-cache minimum, down from 1024
  • Separate rate-limit bucket from the Opus 4.x pool

Best for agentic coding.

Full spec sheet →