Compare Grok Build 0.1 from SpaceXAI and Qwen3.5 Plus 2026-04-20 from Qwen on key metrics including benchmarks, price, context length, and other model features. Access both models and hundreds of others through the OpenRouter API.
Grok Build 0.1 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.
Grok Build 0.1, from SpaceXAI, has a 256,000-token context window and is priced at $1/M tokens input, $2/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.