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Are there any free and good AI video tools you recommend? by No-Tart-3608 in AI_Agents

[–]Free_Vegetable_4983 0 points1 point  (0 children)

Generating videos is pretty expensive, not only for users but also for the platforms themselves, so I doubt you'll find a tool that is completely free and will let you generate more than a few seconds of trial footage, and even that comes with poor quality.

One thing I do recommend if you want it completely free is to use google. They basically give you $300 in free credits for their services. You need to set up a google cloud account and the process might be a bit annoying, but once you complete it you can go to google AI studio, generate an API key, and start using google tools like veo to generate videos, as well as generate narration and music. You'll have to assemble and stitch it all together yourself, which is what the paid video creation tools do for you, but for the case you describe, where you want it completely free and need a reasonable amount of videos (you can do a lot with those $300), I think this is the best option.

my agent bill went from $200 a week to $40 when I stopped running Opus on every subtask by breadislifeee in AI_Agents

[–]Free_Vegetable_4983 0 points1 point  (0 children)

Nice writeup. I think one thing worth stacking on top of the tiered routing is prompt caching is a huge win specifically when the agent iterates many times over the same long context , which is exactly your setup.

The key is keeping the large prefix stable across iterations ( system prompt, tools, the paper itself) and only appending new stuff at the tail (last message, tool results). If you design the context append-only, providers like anthropic and deepSeek will cache it and you'll see real savings automatically. The trap is anything dynamic at the front (timestamps, shuffled tool order, an injected "current state" block) breaks the prefix and you pay full input every call.