Claude Sonnet 4.5 vs E5-Base-v2: side-by-side summary

Claude Sonnet 4.5 and E5-Base-v2 are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.

Claude Sonnet 4.5, from Anthropic, has a 1,000,000-token context window and is priced at $3/M tokens input, $15/M tokens output on OpenRouter.

E5-Base-v2, from intfloat, has a 512-token context window and is priced at $0.005/M tokens on OpenRouter.

Context window

• Claude Sonnet 4.5: 1,000,000 tokens
• E5-Base-v2: 512 tokens

Price

• Claude Sonnet 4.5: $3/M tokens input, $15/M tokens output
• E5-Base-v2: $0.005/M tokens

Provided by

• Claude Sonnet 4.5: Anthropic
• E5-Base-v2: intfloat

• Claude Sonnet 4.5 model details, providers and pricing
• E5-Base-v2 model details, providers and pricing