← All Models

DeepSeek V4 Flash vs o3

o3 leads in 3 of 8 categories

Arena ELO

o3

Cheaper

DeepSeek V4 Flash

Faster

o3

Detailed Comparison

CategoryDeepSeek V4 Flasho3
ProviderDeepSeek OpenAI
Context Window128K 200K WIN
Input Price ($/1M)$0.14 WIN$10
Output Price ($/1M)$0.28 WIN$40
Arena ELON/A 1422 WIN
CodingN/A unknown
ReasoningN/A unknown
Speed (tokens/sec)N/A ~30 t/s WIN
Open SourceYes No

Frequently Asked Questions

Which is cheaper, DeepSeek V4 Flash or o3?

DeepSeek V4 Flash is approximately 99% cheaper than o3 per million tokens.

Which is better for coding, DeepSeek V4 Flash or o3?

DeepSeek V4 Flash scores N/A on coding benchmarks, while o3 scores unknown.

Which has a larger context window?

DeepSeek V4 Flash supports 128K context, while o3 supports 200K.

Is DeepSeek V4 Flash or o3 open source?

DeepSeek V4 Flash is open source. o3 is proprietary.