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Pyyan / Compare / ERNIE 5.1 vs Claude Sonnet 5

ERNIE 5.1 vs Claude Sonnet 5

2 of 5

Language Models · verified 13 Aug 2026

ERNIE 5.1Baiducurrent
Claude Sonnet 5Anthropiccurrent
3 slots left
SpecificationERNIE 5.1Claude Sonnet 5
SummaryBaidu's closed frontier tier.Near-Opus quality on coding and agentic work at Sonnet cost.
Context—1M
Input ($/Mtok)—$3
Output ($/Mtok)—$15
LicenceProprietaryProprietary
Max output—128K
Released8 May 2026—
Model ID—claude-sonnet-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 Sonnet 5

  • Adaptive thinking on by default
  • New tokenizer — roughly 30% more tokens for the same text
  • Introductory $2/$10 through 31 Aug 2026

Best for high-volume production.

Full spec sheet →