Seed 1.6 vs Grok 4.1 Fast: side-by-side summary

Seed 1.6 and Grok 4.1 Fast are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.

Seed 1.6, from bytedance-seed, has a 262,144-token context window and is priced at $0.25/M tokens input, $2/M tokens output on OpenRouter.

Grok 4.1 Fast, from SpaceXAI, has a 2,000,000-token context window and is priced by the provider serving it on OpenRouter.

Context window

• Seed 1.6: 262,144 tokens
• Grok 4.1 Fast: 2,000,000 tokens

Price

• Seed 1.6: $0.25/M tokens input, $2/M tokens output
• Grok 4.1 Fast: Pricing varies by provider

Provided by

• Seed 1.6: bytedance-seed
• Grok 4.1 Fast: SpaceXAI

• Seed 1.6 model details, providers and pricing
• Grok 4.1 Fast model details, providers and pricing