Compare Seed-2.0-Code from bytedance-seed and Union Alpha from Stealth on key metrics including benchmarks, price, context length, and other model features. Access both models and hundreds of others through the OpenRouter API.
Seed-2.0-Code and Union Alpha are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.
Seed-2.0-Code, from bytedance-seed, has a 262,144-token context window and is priced at $0.50/M tokens input, $3/M tokens output on OpenRouter.
Union Alpha, from Stealth, has a 262,144-token context window and is free to use on OpenRouter.