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Avatar IV vs mischief 1: API price, context & features · api14

HeyGen: Avatar IV vs TBC: mischief 1

A side-by-side comparison of HeyGen: Avatar IV ($0.18 / second) and TBC: mischief 1 ($0.02 / second) using current USD prices and capabilities from the api14 catalog. Both run through the same OpenAI-compatible API.

Specifications

	HeyGen: Avatar IV	TBC: mischief 1
Provider	HeyGen	TBC
duration_seconds	$0.18 / second	-
cents_per_video_output_second_480p	-	$0.02 / second
cents_per_video_output_second_720p	-	$0.04 / second
Context window	-	-
Max output	-	-
Input	text, image, audio	text, image
Output	video	video
Tool calling
Structured output
Reasoning control
Added	Aug 24, 2026	Oct 30, 2026

Switch with one string

Both models use the same endpoint and request shape. Change the model value from "heygen/avatar-iv" to "tbc/mischief-1" and prompts, streaming and tools keep working.

HeyGen: Avatar IV details & playground →TBC: mischief 1 details & playground →

import OpenAI from "openai";

const client = new OpenAI({
  baseURL: "https://api14.com/api/v1",
  apiKey: process.env.API14_API_KEY,
});

// Video generation is asynchronous: submit, then poll until completed.
let job = await client.post("/videos", { body: {
  "model": "tbc/mischief-1",
  "prompt": "A drone shot over turquoise ocean waves at sunrise",
  "duration": 8,
  "resolution": "720p",
  "aspect_ratio": "16:9"
} });
while (!["completed", "failed"].includes(job.status)) {
  await new Promise((r) => setTimeout(r, 5000));
  job = await client.get(`/videos/${job.id}`);
}
console.log(job.status, job.unsigned_urls);

HeyGen: Avatar IV vs TBC: mischief 1

Specifications

Switch with one string

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