LLM Comparison

GPT-5.4 Pro vs Seed 1.6 Flash

Side-by-side specs, pricing & capabilities · Updated April 2026

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2/6 models
Same tier:
 OpenAIGPT-5.4 Pro
S
Seed 1.6 Flash
OrganizationOpenAIOpenAIByteDance
OpenTools Score
FamilyGPTSeed
StatusCurrentCurrent
Release DateMar 2026Dec 2025
Context Window1.1M tokens262K tokens
Input Price$30.00/M tokens$0.07/M tokens
Output Price$180.00/M tokens$0.30/M tokens
Capabilities
textvisioncode
textvisionvideocode
Max Output128K tokens33K tokens
API Identifieropenai/gpt-5.4-probytedance-seed/seed-1.6-flash
 View GPT-5.4 ProView Seed 1.6 Flash

Cost Calculator

Enter your expected monthly token usage to compare costs.

ModelInputOutputTotal / movs Best
Seed 1.6 FlashCheapest$0.08$0.15$0.22—
GPT-5.4 Pro$30.00$90.00$120.00+53233%

OpenAI

GPT-5.4 Pro

GPT-5.4 Pro is a multimodal llm from OpenAI. Supports up to 1,050,000 token context window. Available from $30.00/M input tokens.

ByteDance

Seed 1.6 Flash

Seed 1.6 Flash is a multimodal llm from ByteDance. Supports up to 262,144 token context window. Available from $0.07/M input tokens.

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