LLMJunky blames unnoticed Veo 3.1 use for The History of Light’s cost overrun
LLMJunky says the Opus 5.5 film workflow used Veo 3.1 without their noticing until too late. The creator calls the spending a mistake and says the project could be made for under $10.
TL;DR
- The History of Light ran 36 minutes and cost $200-plus, according to LLMJunky's original post.
- Unwanted Veo 3.1 use went unnoticed until “too late,” the creator said in a follow-up.
- A sub-$10 version is possible, LLMJunky claimed in another reply, calling the spending “a mistake on my part.”
The original film post says Opus 5.5 could use any API key in the creator's keychain and even wrote itself end credits. Google's Veo documentation describes eight-second clips with native audio, with per-second charges on its pricing page.
The 36-minute film
The gloriously oversized result began with a brief to “write, produce, and create” an educational cartoon about light, according to LLMJunky. The creator says they supplied a few constraints and left the production decisions to the model, including motion graphics explaining electromagnetism.
The History of Light, LLMJunky's AI-produced educational film
Narration, music and imagery
LLMJunky listed the production tools across three jobs, using these model names:
- Narration: Gemini 3.8 Flash TTS.
- Background music: Lyrica 3.
- Scene imagery: GPT Image 2.5, Nano Banana Pro and NB2 Flash.
The creator singled out the narration for praise and described the background music as “essentially perfect,” while acknowledging that the film itself had imperfections.
The unwanted Veo use
Veo 3.1 entered LLMMJunky's explanation of the spending after being absent from the initial credited stack.
The cheaper estimate comes without an alternative production stack or an itemized cost breakdown in the reply.
The separate suspension image
Elsewhere, LLMJunky shared an image styled as an Anthropic suspension email in a separate thread.
The separate suspension-themed image, citing “Repeated Clankerphobic comments”
Veo 3.1 pricing
Google's Gemini API pricing page lists these rates for 720p video with audio, with eight-second clip costs calculated from the per-second prices:
- Veo 3.1 Standard: $0.40 per second, or $3.20 per clip.
- Veo 3.1 Fast: $0.10 per second, or $0.80 per clip.
- Veo 3.1 Lite: $0.05 per second, or $0.40 per clip.
At that Standard rate, 63 eight-second clips would cost $201.60 before narration, music or images. LLMJunky names no Veo variant, resolution or clip count in the follow-up, so that calculation is an illustration rather than an accounting of this film.