Claude Sonnet 4.5 vs FLUX.2 Max: side-by-side summary

Claude Sonnet 4.5 and FLUX.2 Max 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.

FLUX.2 Max, from black-forest-labs, has a 46,864-token context window and is priced at $0.07/megapixel on OpenRouter.

Context window

• Claude Sonnet 4.5: 1,000,000 tokens
• FLUX.2 Max: 46,864 tokens

Price

• Claude Sonnet 4.5: $3/M tokens input, $15/M tokens output
• FLUX.2 Max: $0.07/megapixel

Provided by

• Claude Sonnet 4.5: Anthropic
• FLUX.2 Max: black-forest-labs

• Claude Sonnet 4.5 model details, providers and pricing
• FLUX.2 Max model details, providers and pricing