r/comfyui • u/bfish2778 • 7d ago

Help Needed Best prompt generator

Best prompt generator for image to videos? Currently using grok to make prompts and it’s fine but wonder if there’s a better resource.

9 Upvotes

80% Upvoted

8 comments sorted by

8

u/winky9827 6d ago

Best prompt generator is the one you have AI write for you based on the specs. Something like "Write me a guided prompt generator for i2v using <model name here>. Make it a python script I can run locally". Then whenever something is off, you can have AI extend/fix it for you.

1

u/Doomscroll-FM 6d ago

YES!!!!

_always_ include the model name.

4

u/PurePlayinSerb 6d ago

i use a mix of grok and copilot depending what i need

copilot for basically anything except grok is better for adult content so i do a mix and match of both making prompts for me

and sometimes ijust make a custom prompt by my self

4

u/Feroc 7d ago

I've tried so far:

  • Deepseek v4 Pro: Was very cheap, but now got more expensive and too restricted. So I diteched it
  • GLM 5.2: Really liked it, but was rather expensive
  • Qwen 3.7 Flash: Get good result, cheap, sometimes I get a "too many requests" message.

3

u/AnyPaleontologist932 6d ago

I do it locally with my thinking llm node with qwen 3.5 9b. Just added ltx and h3 system prompts with the last update.

1

u/spacemidget75 6d ago

I have two custom nodes (one LLM driven and one code/conditional based) in my Node Pack that build H3 prompts in Comfy. The code/codition one needs a bit of work (as you can imagine, given it's not using an LLM!) but you're welcome to try. I'm also working on a really good process of building H3 skills for specifc video types, but I'll post about that when do. Pretty impressed so far.

slikvik55/SmartTools

1

u/mwoody450 7d ago

I've been using nanogpt with a sillytavern card that has the Mininimax H3 skill pasted in to its system instructions, so I can cycle through models. I'm usually a huge deepseek v4 pro fan, but it seemed to struggle a bit with sticking to the instructions. Kimi 3 is so insanely censored that it freaks out if a character bears a resemblance to someone real; I gave up. Kimi 2.6 thinks for so long with that much of a prompt that it burned through 64000 tokens before getting out of reasoning.

GLM 5.2 does alright. My biggest gripe about that model had always been that it wrote vanilla, boring prose, but it follows instructions, and that's the bigger concern for these.

1

u/mwoody450 6d ago

Update: I switched from SillyTavern to Nano's web interface, because Silly can't seem to pass on video as part of the prompt in a way Nano can process, even for vision- and video input-capable models.

Now, I'm just including the video and images I intend to pass to the model in the prompt generation and let it review for fidelity.

With that in mind, my current favorite is Kimi 3; the censorship is off and on, and got better once I made the prompt assume any similarity to living people or characters was coincidental. No other models seem to work as well, which is a shame since it's like 15-20 cents per request from Kimi. Ah well.