Seed 2.1 Turbo vs Phi 4: side-by-side summary

Seed 2.1 Turbo and Phi 4 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.

Phi 4, from Microsoft, has a 16,384-token context window and is priced at $0.07/M tokens input, $0.14/M tokens output on OpenRouter.

Context window

• Seed 2.1 Turbo: 262,144 tokens
• Phi 4: 16,384 tokens

Price

• Seed 2.1 Turbo: $0.50/M tokens input, $2.50/M tokens output
• Phi 4: $0.07/M tokens input, $0.14/M tokens output

Provided by

• Seed 2.1 Turbo: bytedance-seed
• Phi 4: Microsoft

• Seed 2.1 Turbo model details, providers and pricing
• Phi 4 model details, providers and pricing