Claude Opus 5 vs Seed-2.0-Code: side-by-side summary

Claude Opus 5 and Seed-2.0-Code are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.

Claude Opus 5, from Anthropic, has a 1,000,000-token context window and is priced at $5/M tokens input, $25/M tokens output on OpenRouter.

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.

Context window

• Claude Opus 5: 1,000,000 tokens
• Seed-2.0-Code: 262,144 tokens

Price

• Claude Opus 5: $5/M tokens input, $25/M tokens output
• Seed-2.0-Code: $0.50/M tokens input, $3/M tokens output

Provided by

• Claude Opus 5: Anthropic
• Seed-2.0-Code: bytedance-seed

• Claude Opus 5 model details, providers and pricing
• Seed-2.0-Code model details, providers and pricing