deepseek-v4-flash vs gpt-5.4-mini-2026-03-17

Pricing, Performance & Features Comparison

deepseek-v4-flash

Authordeepseek

Context Length1M

Reasoning

Providers1

ReleasedApr 2026

Knowledge Cutoff-

LicenseMIT License

Mixture-of-Experts model with 284B total parameters and 13B activated per token. Features hybrid attention architecture for efficient 1M context processing.

Input$0.14

Output$0.28

Latency (p50)3.3s

Output Limit384K

Function Calling

JSON Mode

InputText

OutputText

deepseek

in$0.14out$0.28cache$0.028write$0.14

Latency (24h)

Success Rate (24h)

gpt-5.4-mini-2026-03-17

Authoropenai

Context Length400K

Reasoning

Providers1

ReleasedMar 2026

Knowledge CutoffAug 2025

License-

Input$0.75

Output$4.5

Latency (p50)3.1s

Output Limit128K

Function Calling

JSON Mode

InputText, Image

OutputText

openai

in$0.75out$4.5cache$0.075-