Mercury 2.5 Preview vs Qwen3.8 27B: side-by-side summary

Mercury 2.5 Preview and Qwen3.8 27B are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.

Mercury 2.5 Preview, from inception, has a 260,000-token context window and is priced at $0.04/M tokens input, $0.15/M tokens output on OpenRouter.

Qwen3.8 27B, from Qwen, has a 1,000,000-token context window and is priced at $0.32/M tokens input, $2.50/M tokens output on OpenRouter.

Context window

• Mercury 2.5 Preview: 260,000 tokens
• Qwen3.8 27B: 1,000,000 tokens

Price

• Mercury 2.5 Preview: $0.04/M tokens input, $0.15/M tokens output
• Qwen3.8 27B: $0.32/M tokens input, $2.50/M tokens output

Provided by

• Mercury 2.5 Preview: inception
• Qwen3.8 27B: Qwen

• Mercury 2.5 Preview model details, providers and pricing
• Qwen3.8 27B model details, providers and pricing