01 · Studio
Jantaris Studio
For creators. Pick a model, type a prompt, get your clip or image. History, downloads and live cost preview before you click generate.
Explore StudioVeo 3.1 (Quality)
One key · every model
Every AI model.
One Jantaris.
81 AI models in one place. Video from $0.0299/s, images from $0.02. Pay only for what you make.
- Failed generations are free
- OpenAI & Anthropic SDK compatible
- Balance never expires
3.0WanWan 3.0
from $0.0777 / s
H3MiniMaxMiniMax H3
from $0.161 / s
2.5SeedanceSeedance 2.5
from $0.261 / s
3.0KlingKling 3.0
from $0.169 / s
3.1 (Quality)VeoVeo 3.1 (Quality)
from $2.53 / video
2.5GPT ImageGPT Image 2.5
$0.0432 / image
5.0 ProSeedreamSeedream 5.0 Pro
from $0.0783 / image
FLUX.2 [pro]FLUX.2 [pro]
from $0.0688 / image
Two ways in
Studio or API. One balance.
02 · API
Jantaris API
For developers and companies. One REST API with async tasks and webhooks for media, plus OpenAI and Anthropic compatible chat. Works with Claude Code, Cursor, n8n and Make.
POST /v1/generate
{ "model": "seedance-2.5",
"input": { "prompt": "...", "duration": 8 } }
→ 202 { "id": "task_7fq...", "status": "queued" }
GET /v1/tasks/task_7fq...
→ 200 { "status": "succeeded",
"output": [{ "url": ".../out.mp4" }],
"cost": { "amount": "4.70", "currency": "USD" } }
# failed run → "cost": 0, hold returned- OpenAI SDK: change base_url
- Signed webhook when the task is done
- Failed generation = $0
- Receipt for every top-up
API
One request. Any model.
Change the model id, keep the rest of your code. Every media model returns the same task object, so polling and webhooks work the same everywhere.
- OpenAI SDK: change base_url
- Anthropic SDK and Claude Code: /v1/messages
- Async tasks, ?wait=60 for images
- Signed webhooks with retries
curl https://jantaris.com/v1/generate?wait=60 \
-H "Authorization: Bearer $JANTARIS_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "seedance-2.5",
"input": {
"prompt": "A slow dolly shot through a neon-lit night market in the rain, reflections on wet asphalt, cinematic",
"aspect_ratio": "adaptive",
"resolution": "720p",
"duration": 5
}
}'import os, time, requests
API = "https://jantaris.com/v1"
H = {"Authorization": f"Bearer {os.environ['JANTARIS_API_KEY']}"}
task = requests.post(f"{API}/generate", headers=H, json={
"model": "seedance-2.5",
"input": {
"prompt": "A slow dolly shot through a neon-lit night market in the rain, reflections on wet asphalt, cinematic",
"aspect_ratio": "adaptive",
"resolution": "720p",
"duration": 5
}
}).json()
while task["status"] in ("queued", "running"):
time.sleep(3)
task = requests.get(f"{API}/tasks/{task['id']}", headers=H).json()
print(task["status"], task["cost"], [o["url"] for o in task["output"]])const API = "https://jantaris.com/v1";
const headers = { Authorization: `Bearer ${process.env.JANTARIS_API_KEY}`, "Content-Type": "application/json" };
let task = await (await fetch(`${API}/generate`, {
method: "POST",
headers,
body: JSON.stringify({
"model": "seedance-2.5",
"input": {
"prompt": "A slow dolly shot through a neon-lit night market in the rain, reflections on wet asphalt, cinematic",
"aspect_ratio": "adaptive",
"resolution": "720p",
"duration": 5
}
}),
})).json();
while (task.status === "queued" || task.status === "running") {
await new Promise((r) => setTimeout(r, 3000));
task = await (await fetch(`${API}/tasks/${task.id}`, { headers })).json();
}
console.log(task.status, task.cost, task.output.map((o) => o.url));How it works
Three steps to your first generation
- 01
Create an account
Email and password. No card needed to look around.
- 02
Top up your balance
From $10, by card. Balance never expires.
- 03
Generate
In Studio or through the API. You see the price before each run.
Pricing
Pay per result, not per month
No subscription. Each model has a clear unit price: per image, per second of video, per song, per 1M tokens. The estimated cost is held before the run and released in full if it fails.
Prices exclude taxes. Billed from your prepaid USD balance.
| Model | Type | Price |
|---|---|---|
| Seedance 2.5 | Video | from $0.261 / s |
| Kling 3.0 | Video | from $0.169 / s |
| Veo 3.1 (Quality) | Video | from $2.53 / video |
| GPT Image 2.5 | Image | $0.0432 / image |
| Nano Banana Pro | Image | from $0.0747 / image |
| FLUX.2 [pro] | Image | from $0.0688 / image |
| Mureka V9 | Audio | $0.124 / song |
| Claude Opus 5.5 | Chat & code | $5.40 / $27.00 · 1M tok |
| GPT-6 Sol | Chat & code | $2.16 / $10.80 · 1M tok |
| DeepSeek V4.1 Flash | Chat & code | $0.54 / $1.75 · 1M tok |
videoAI video for online courses - practical B-roll
Plan AI B-roll for an online course: choose a shot, control camera movement, edit around narration and check the cost before generating a clip.
2026-10-11 · 2 min
videoImage-to-video from a product photo
Animate a product photo while checking its shape and branding. Prepare the first frame, describe one camera movement and review the resulting shot.
2026-10-11 · 2 min
musicInstrumental AI music for reels
Create an AI music bed for a narrated reel. Specify instruments and rhythm, leave space for speech and cut the generated track to the finished edit.
2026-10-11 · 2 minFAQ
Questions
What is Jantaris?
Jantaris gives you one account, one balance and one API key for dozens of AI models: image, video, music and audio, chat and code. You can use them in the browser with Jantaris Studio or call them from your own code through the Jantaris API. Both draw from the same prepaid balance, so you top up once and switch models whenever you like. The current list is on the models page.
Do I need to know how to code?
No. Studio runs in the browser: pick a model, write a prompt, set the duration or aspect ratio and click generate. The API is for developers and teams who want to plug models into their apps, scripts or automations. Both work on the same account and the same balance.
How do I get started?
Create an account, confirm your email with the link we send you, top up your balance (the minimum is $10) and either open Studio or create an API key in the dashboard. For the API, the quickstart takes you from a new key to your first generated image with ready-to-run curl, Python and JavaScript examples.
Is Jantaris free? Is there a free trial or free credits?
No. There is no free plan, no sign-up credits and no subscription - you pay from the first generation, and the smallest top-up is $10. In return your balance never expires and failed generations cost $0, so you don't pay for model errors. The pricing page shows the unit price of every model, which lets you work out in advance what a top-up covers.
Which models can I use?
Image models such as GPT Image 2.5, Nano Banana Pro and FLUX.2 [pro], video models such as Seedance 2.5, Kling 3.0 and Veo 3.1 (Quality), music with Mureka V9, and chat models such as Claude Opus 5.5, GPT-6 Sol, gemini-3.8-flash and DeepSeek V4.1 Flash. The catalog changes as new models come out. The up-to-date list with prices is on /models and available from GET /v1/models.
Does Jantaris work on my phone? Is there an app?
Yes, Studio and the dashboard work in a mobile browser such as Safari or Chrome. You can add the site to your home screen (Safari: Share → Add to Home Screen, Chrome: menu → Add to Home screen) and open it like an app. There is no native app in the App Store or Google Play yet. You can upload photos straight from your camera roll and save finished files with the Download button.
Your first clip is a minute away.
Create an account, top up and generate. Or grab an API key and ship.