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

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

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.

Qwen3.8 27B, from Qwen, has a 1,000,000-token context window and is priced at $0.35/M tokens input, $2.75/M tokens output on OpenRouter.

Context window

• UI-TARS 7B : 128,000 tokens
• Qwen3.8 27B: 1,000,000 tokens

Price

• UI-TARS 7B : $0.10/M tokens input, $0.20/M tokens output
• Qwen3.8 27B: $0.35/M tokens input, $2.75/M tokens output

Provided by

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

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