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DeepSeek V4 Flash 0731 (Arkanecloud) vs GPT-5 Nano

Both have similar output pricing, while DeepSeek V4 Flash 0731 (Arkanecloud) offers a larger context window. Choose DeepSeek V4 Flash 0731 (Arkanecloud) or GPT-5 Nano based on the trade-off between cost, context, and the benchmarks that matter for your use case.

SpecDeepSeek V4 Flash 0731 (Arkanecloud)GPT-5 Nano
ProviderEden AIOpenAI
Input / 1M tokens$0.20$0.05
Output / 1M tokens$0.40$0.40
Context window1M400K
Parameters——
Open weightsYesNo
ReleasedJul 2026Aug 2025
LiveBench score—48.8
SWE-bench Verified score—34.8
LMArena (Chatbot Arena) Elo score—1320
GPQA Diamond score—69.4
FrontierMath score—8.3
Epoch Capabilities Index score—139
LMArena Vision Elo score—1159

FAQ

Is DeepSeek V4 Flash 0731 (Arkanecloud) or GPT-5 Nano cheaper?

DeepSeek V4 Flash 0731 (Arkanecloud) and GPT-5 Nano have comparable output pricing.

Which has the larger context window, DeepSeek V4 Flash 0731 (Arkanecloud) or GPT-5 Nano?

DeepSeek V4 Flash 0731 (Arkanecloud) has the larger context window (1M tokens).

Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.