Is OpenAI: GPT-5 Pro or DeepSeek: DeepSeek V4 Flash cheaper?

DeepSeek: DeepSeek V4 Flash is cheaper on output tokens ($0.28 vs $120.00 per 1M).

Which has the larger context window, OpenAI: GPT-5 Pro or DeepSeek: DeepSeek V4 Flash?

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

OpenAI: GPT-5 Pro vs DeepSeek: DeepSeek V4 Flash

DeepSeek: DeepSeek V4 Flash is cheaper on output tokens, while DeepSeek: DeepSeek V4 Flash offers a larger context window. Choose OpenAI: GPT-5 Pro or DeepSeek: DeepSeek V4 Flash based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	OpenAI: GPT-5 Pro	DeepSeek: DeepSeek V4 Flash
Provider	Kilo Gateway	Kilo Gateway
Input / 1M tokens	$15.00	$0.14
Output / 1M tokens	$120.00	$0.28
Context window	400K	1M
Parameters	—	284B
Open weights	No	No
Released	Oct 2025	Apr 2026

OpenAI: GPT-5 Pro details →DeepSeek: DeepSeek V4 Flash details →

FAQ

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