DeepSeek V4-Flash: A Solid GPT-4 Alternative at 60% Less Cost

I've been testing DeepSeek V4-Flash as an alternative to GPT-4 for the past few weeks, and here are my honest thoughts.
Performance: For coding tasks (debugging, code generation, refactoring), it's very close to GPT-4. For complex reasoning chains, it holds up well. Where it falls short is creative writing and nuanced instructions — but for a developer-focused API, that's usually not a dealbreaker.
Pricing comparison (per 1M tokens):
GPT-4o: $2.50 / $10.00
DeepSeek V4-Flash via Cheap AI API: $1.00 / $6.00
That's roughly 60% less.
The catch: It's not OpenAI. Some libraries and tools expect OpenAI-compatible APIs, but DeepSeek supports the same format, so most integrations work with just a URL swap.
Where to get it: https://topaitools.vip/token-chuhai.html
They have a Telegram bot (@CheapAIApiBot) where you buy credits and get the API key instantly. No subscription, no commitment.
I'm not affiliated with them, just a user who got tired of burning through OpenAI credits. YMMV but worth a try if you're on a budget.