Seed 2.1 Turbo vs Gemini 3.5 Flash Lite: side-by-side summary

Seed 2.1 Turbo and Gemini 3.5 Flash Lite are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.

Seed 2.1 Turbo, from bytedance-seed, has a 262,144-token context window and is priced at $0.50/M tokens input, $2.50/M tokens output on OpenRouter.

Gemini 3.5 Flash Lite, from Google, has a 1,048,576-token context window and is priced at $0.30/M tokens input, $2.50/M tokens output on OpenRouter.

Context window

• Seed 2.1 Turbo: 262,144 tokens
• Gemini 3.5 Flash Lite: 1,048,576 tokens

Price

• Seed 2.1 Turbo: $0.50/M tokens input, $2.50/M tokens output
• Gemini 3.5 Flash Lite: $0.30/M tokens input, $2.50/M tokens output

Provided by

• Seed 2.1 Turbo: bytedance-seed
• Gemini 3.5 Flash Lite: Google

• Seed 2.1 Turbo model details, providers and pricing
• Gemini 3.5 Flash Lite model details, providers and pricing