FLUX.2 Flex vs Qwen3 Embedding 4B: side-by-side summary

FLUX.2 Flex and Qwen3 Embedding 4B are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.

FLUX.2 Flex, from black-forest-labs, has a 67,344-token context window and is priced from $0.06/megapixel on OpenRouter.

Qwen3 Embedding 4B, from Qwen, has a 32,768-token context window and is priced at $0.02/M tokens on OpenRouter.

Context window

• FLUX.2 Flex: 67,344 tokens
• Qwen3 Embedding 4B: 32,768 tokens

Price

• FLUX.2 Flex: from $0.06/megapixel
• Qwen3 Embedding 4B: $0.02/M tokens

Provided by

• FLUX.2 Flex: black-forest-labs
• Qwen3 Embedding 4B: Qwen

• FLUX.2 Flex model details, providers and pricing
• Qwen3 Embedding 4B model details, providers and pricing