Mistral Medium 3.5 vs Qwen3.5 Plus 2026-04-20: side-by-side summary

Mistral Medium 3.5 and Qwen3.5 Plus 2026-04-20 are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.

Mistral Medium 3.5, from Mistral AI, has a 262,144-token context window and is priced at $1.50/M tokens input, $7.50/M tokens output on OpenRouter.

Qwen3.5 Plus 2026-04-20, from Qwen, has a 1,000,000-token context window and is priced at $0.30/M tokens input, $1.80/M tokens output on OpenRouter.

Context window

• Mistral Medium 3.5: 262,144 tokens
• Qwen3.5 Plus 2026-04-20: 1,000,000 tokens

Price

• Mistral Medium 3.5: $1.50/M tokens input, $7.50/M tokens output
• Qwen3.5 Plus 2026-04-20: $0.30/M tokens input, $1.80/M tokens output

Provided by

• Mistral Medium 3.5: Mistral AI
• Qwen3.5 Plus 2026-04-20: Qwen

• Mistral Medium 3.5 model details, providers and pricing
• Qwen3.5 Plus 2026-04-20 model details, providers and pricing