Kling 3.0 & O3 API — Official Discount Pricing for Developers (2026)

We compared the three major pay-per-second Kling API providers — EvoLink, fal.ai, and WaveSpeed — line by line. The result: identical models, generally comparable outputs (defaults may vary by provider), but a 55% price gap between the cheapest and the rest.

Here's the full breakdown.

1. TL;DR — The Price Table
2. Provider-by-Provider Pricing Breakdown
3. Kling 3.0 vs O3: Which One Should You Use?
4. Real Cost Scenarios
5. What Are Kling 3.0 and O3?
6. How to Get Started with the Lowest-Cost Kling API
7. FAQ

TL;DR — The Price Table

All three providers offer the same Kling 3.0 and O3 models via API. The only difference is price.

Per-Second Rates (Audio Off)

Per-Second Rates (Audio On)

What a Single Video Costs (Audio Off)

Provider-by-Provider Pricing Breakdown

EvoLink

EvoLink passes official volume discounts directly to developers — typically 20–70% off standard rates depending on the model. For Kling V3 and O3 specifically, the discount works out to about 55% below what fal.ai and WaveSpeed charge.

No subscription required. No credit packs that expire. You pay for what you generate, by the second.

fal.ai

fal.ai is a well-established platform with a broad model catalog. Their Kling pricing is straightforward — per-second billing with no hidden fees. The trade-off is that their per-second rates are more than double EvoLink's.

Audio adds a 50% surcharge on V3 models and a 25-33% surcharge on O3 models.

WaveSpeed

WaveSpeed's Kling pricing is identical to fal.ai's across every model and tier. They display prices per 5-second block ($0.84 for Standard, $1.12 for Pro), which converts to the same per-second rates.

One difference: WaveSpeed also offers Kling O3 Reference-to-Video (Ref2V) at $0.224/s with additional multipliers for reference video input (1.5×) and audio (1.25×).

Side-by-Side: 10-Second Video Cost

Kling 3.0 vs O3: Which One Should You Use?

Both models are from Kuaishou's latest generation, but they serve different workflows.

When O3's Extra Features Actually Matter

O3's Reference-to-Video is the key differentiator. If you're producing a series — say, a 10-episode short drama with recurring characters — V3 would generate a different-looking protagonist every time. O3 lets you feed a reference image and locks the character's appearance across all clips.

Voice control is the other major upgrade. With V3, audio is generated automatically based on the scene. With O3, you can assign specific voices to characters, control dialogue timing, and even specify accents (British English, Cantonese, Sichuan dialect). For content that requires precise audio direction, O3 is the only option.

Quick Decision Guide

• "I have a text prompt and want a video" → Kling 3.0 (V3). Simpler, same price, excellent quality.
• "I have reference images/videos and need consistency" → Kling O3. Its Ref2V and element reference capabilities keep characters and scenes locked across shots.
• "I need voice control or video editing" → Kling O3 only. V3 doesn't support these.
• "I'm building a content pipeline" → Start with V3 for prompt-driven batches, add O3 when you need reference-based or editing workflows.

Real Cost Scenarios

Let's put these prices in context with three real-world use cases.

Scenario 1: Short Drama Studio — 100 Clips per Day

A short drama production team generating 100 clips daily, each 10 seconds, Standard quality (720p), audio on.

Scenario 2: E-Commerce Product Videos — 50 per Week

An e-commerce team creating 50 product videos weekly, each 5 seconds, Pro quality (1080p), no audio. Typical use: product showcases for TikTok Shop, Amazon listings, or Shopify stores.

Scenario 3: SaaS Integration — 1,000 API Calls per Day

A SaaS platform offering AI video features to end users. 1,000 generations per day, mixed durations averaging 8 seconds, Standard quality, no audio. This is where API pricing becomes a make-or-break cost line.

What Are Kling 3.0 and O3?

If you're already familiar with Kling, skip this section. For those new to the models:

• Reference-to-Video (Ref2V): Feed it reference images or videos, and it maintains character/scene consistency across generations.
• Video Editing: Modify existing videos with text instructions.
• Voice Control: Direct dialogue timing, character voices, and accents.
• Element Reference: Lock specific visual elements (logos, products, characters) for brand consistency.

Both models support up to 15-second generation, 720p (Standard) and 1080p (Pro) output, and native audio generation.

How to Get Started with the Lowest-Cost Kling API

Step 1: Get Your API Key

Step 2: Generate Your First Video

import requests
import time

API_KEY = "your-evolink-api-key"
BASE_URL = "https://api.evolink.ai/v1"

# Submit a Kling 3.0 text-to-video task
response = requests.post(
    f"{BASE_URL}/video/generations",
    headers={
        "Authorization": f"Bearer {API_KEY}",
        "Content-Type": "application/json"
    },
    json={
        "model": "kling-v3-standard",
        "prompt": "A golden retriever running through a sunlit meadow, cinematic slow motion, shallow depth of field",
        "duration": 5,
        "aspect_ratio": "16:9"
    }
)

task = response.json()
task_id = task["id"]
print(f"Task submitted: {task_id}")

# Poll for completion
while True:
    status = requests.get(
        f"{BASE_URL}/video/generations/{task_id}",
        headers={"Authorization": f"Bearer {API_KEY}"}
    ).json()

    if status["status"] == "completed":
        print(f"Video URL: {status['video_url']}")
        break
    elif status["status"] == "failed":
        print(f"Failed: {status.get('error')}")
        break

    time.sleep(5)

# Submit task
curl -X POST https://api.evolink.ai/v1/video/generations \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "kling-v3-standard",
    "prompt": "A cat wearing sunglasses skateboarding down a neon-lit city street at night",
    "duration": 10,
    "aspect_ratio": "16:9"
  }'

# Check status (replace TASK_ID)
curl https://api.evolink.ai/v1/video/generations/TASK_ID \
  -H "Authorization: Bearer YOUR_API_KEY"

Step 3: Choose Your Parameters

FAQ

What's the cheapest way to use the Kling API in 2026?

As of February 2026, EvoLink offers the lowest per-second rates for Kling 3.0 and O3 among pay-per-second providers: $0.075/s for Standard (720p) and $0.100/s for Pro (1080p). That's 55% less than fal.ai and WaveSpeed, which both charge $0.168/s and $0.224/s respectively.

Is the Kling API free?

Kling's official platform (klingai.com) offers a free tier with daily credits (reported as 66/day by third-party sources; may vary). Third-party API providers like EvoLink, fal.ai, and WaveSpeed are pay-per-use with no free tier, but also no subscription requirement or credit expiration.

How much does a 10-second Kling 3.0 video cost?

Is fal.ai or WaveSpeed cheaper for Kling?

They're the same price. Both charge $0.168/s for Standard and $0.224/s for Pro across all Kling V3 and O3 models. The only pricing differences are minor variations in audio surcharges for specific O3 modes.

Kling 3.0 vs O3: which is cheaper?

On all three providers, Kling 3.0 (V3) and Kling O3 cost the same within each quality tier. Standard is Standard, Pro is Pro — regardless of whether it's V3 or O3. Choose based on features, not price.

Can I use the Kling API without a subscription?

Yes — on all three third-party providers (EvoLink, fal.ai, WaveSpeed), you pay per second with no monthly subscription. Kling's official platform uses a credit-based subscription system (plans and pricing vary; check klingai.com for current tiers).

How does EvoLink's Kling pricing work?

EvoLink offers official discounted pricing on Kling models through volume agreements. You pay per second of generated video, billed to your account balance. No subscription, no credit packs, no expiration. The API is OpenAI-compatible, so if you've integrated with OpenAI or similar providers, migration takes minutes.

What video formats and durations does Kling 3.0 support?

Kling 3.0 and O3 both support:

• Durations: 3, 5, 10, or 15 seconds
• Resolutions: 720p (Standard) and 1080p (Pro)
• Aspect ratios: 16:9, 9:16, 1:1
• Audio: Native audio in Chinese, English, Japanese, Korean, and Spanish
• Input types: Text-to-video, image-to-video (both), plus reference-to-video, video editing, and voice control (O3 only)

Is Kling 3.0 better than Kling 2.5 or 2.6?

Kling 3.0 is a significant upgrade over 2.5 and 2.6 in several areas:

• Multi-shot cinematic storytelling (new in 3.0)
• Extended duration up to 15 seconds (vs 10s in 2.6)
• Multilingual native audio in 5 languages (2.6 supported Chinese only)
• Dialect and accent simulation
• Improved subject consistency across frames
• Custom start and end frame support

The per-second pricing on third-party platforms is comparable to 2.6, making 3.0 the better value for most use cases.

How much does Kling video API cost per month?

It depends entirely on your usage. Here are reference points using EvoLink's rates:

At fal.ai or WaveSpeed, multiply these numbers by roughly 2.2×.