Qwen3.8 27B vs UI-TARS 7B : side-by-side summary

Qwen3.8 27B and UI-TARS 7B are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.

Qwen3.8 27B, from Qwen, has a 262,144-token context window and is priced at $0.45/M tokens input, $3.20/M tokens output on OpenRouter.

UI-TARS 7B , from bytedance, has a 128,000-token context window and is priced at $0.10/M tokens input, $0.20/M tokens output on OpenRouter.

Context window

• Qwen3.8 27B: 262,144 tokens
• UI-TARS 7B : 128,000 tokens

Price

• Qwen3.8 27B: $0.45/M tokens input, $3.20/M tokens output
• UI-TARS 7B : $0.10/M tokens input, $0.20/M tokens output

Provided by

• Qwen3.8 27B: Qwen
• UI-TARS 7B : bytedance

• Qwen3.8 27B model details, providers and pricing
• UI-TARS 7B model details, providers and pricing