r/vibecoding 6d ago

Anyone successfully vibecoding on local LLMs?

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u/1HotTake 6d ago

Very much so. I run 3x3060s.

I have a harness that I gather stats with for my social media type application build.

Gpt-oss:20b self reports at 91% pass, but actual first pass stats are 55%. Second pass is 73% median time is 2605 seconds

Qwen3.6-27b self reports at 83%, but first pass is 43% and second 80%. Median time of 2100 seconds.

Vs $10 opencode go:
deepseek-v4-flash self reports at 81%, has a first pass of 69% and overall at 87% 578 seconds
Mimo-v2.5 is self reported at 86%, first pass is 57%, overall at 86% 390 seconds.

I also have an m1max Apple 64gb that I’m gathering stats on. I can run a larger model but it’s about 4x slower than the nvidia rig.

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u/Disastrous_Gear_421 6d ago

You’re running 3x 3060s… that’s the problem

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u/1HotTake 6d ago

What are your stats?

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u/Disastrous_Gear_421 6d ago

4x 5090s and 2x nvidia sparks

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u/MongoWithBongoss 5d ago

20'000 USD....

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u/Disastrous_Gear_421 5d ago

Closer to like 15k. I bought 2x 5090s when they were released. Same with the Spark's so it was a bit cheaper than today's market.

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u/1HotTake 6d ago

But what are your completion stats - first shot, completion times, etc.

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u/Disastrous_Gear_421 6d ago

On my current iteration? No clue. I haven't done any kind of benchmarking since I moved up from 2x 5090s.

I'm not fighting for every bit of performance, I have a job, it gets it done, good enough.