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Side-by-side comparison · Video & Audio

HeyGen vs Kling AI vs Speechify

Everything that matters when choosing between them, in one place: our rating, what each can do, what they cost, and the trade-offs.

Best overall

HeyGen

4.1

From $29/mo

Kling AI

4.0

From $8.80/mo ($6.99 first month)

Speechify

4.0

From $29/mo

Comparing 3 tools, the maximum.

At a glance

Best overall

Pick it if: Founders, marketers and trainers who need lots of on-camera video but hate filming.

Pick it if: Marketers, creators and agencies who want realistic AI footage on a modest budget.

Pick it if: Busy professionals, students and anyone with ADHD or dyslexia who takes in information better by listening.

Overview

AttributeHeyGenKling AISpeechify
In one lineType a script and a lifelike presenter reads it on camera, in your voice or any language.Make realistic AI video clips up to 30 seconds, with sound, from a prompt or a photo.Reads documents, web pages and photos of text aloud in natural voices, on any device.
Pricing modelFreemiumFreemiumFreemium
Starting price$29/mo$8.80/mo ($6.99 first month)$29/mo
Free plan Yes Yes Yes
Works with Claude Code Yes Yes Yes

Rating breakdown

Our scores out of 5. The higher bar in each row is highlighted.

AttributeHeyGenKling AISpeechify
Overall rating4.1Winner4.04.0
Ease of useHow quickly someone non-technical gets value from it.
4.5
4.0
4.5
FeaturesHow completely it covers its own job, and how well the pieces fit together.
4.5
4.5
4.5
Output qualityHow good the results are before you fix them.
4.0
4.5
4.0
Value for moneyWhat you get for the price, including the free plan.
3.5
3.5
3.0
Speed & reliabilityHow fast it is and how often it falls over.
4.0
3.5
4.0

Feature comparison

A tick means it does this today. A dash means we haven't checked.

AttributeHeyGenKling AISpeechify
Access & platform
Free plan Yes Yes Yes
Mobile app Yes Yes Yes
Desktop app No No Yes
Browser extension No No Yes
API access Yes Yes Yes
Teams & business
Team workspace Yes Yes–
Enterprise plan or SSO Yes Yes–
Connects to other apps Yes Yes Yes
Open source or self-hosted No No No
AI abilities
Works with your files Yes Yes Yes
Understands images Yes Yes Yes
Makes images No Yes No
Makes video Yes Yes No
Writes code No No No
Runs agents or automations Yes No No
Learns your brand or style Yes––
Works in many languages Yes Yes Yes
Capabilities score12/ 1711/ 179/ 17

Pricing

Plans as listed on each vendor's site when we last checked. Confirm before you buy.

AttributeHeyGenKling AISpeechify
Plans

Free

Free

Testing an avatar and the translation feature.

Basic

Free

Trying it out for personal projects.

Free

Free

Basic read-aloud with robotic voices.

CreatorOur pick

$29/mo, or $24/mo billed yearly

Solo founders and marketers publishing regularly.

Standard

$8.80/mo ($6.99 first month), or $6.60/mo billed yearly

Occasional clips for social.

PremiumOur pick

$29/mo, or $139/yr

Anyone who listens to documents most days.

Pro

From $49/mo

Heavier users who want 4K and flexible usage.

ProOur pick

$32.56/mo ($25.99 first month), or $24.42/mo billed yearly

Anyone making video most weeks.

Studio Starter

$100/yr

Occasional voiceovers for videos.

Business

$149/mo

Teams with several presenters.

Premier

From $80.96/mo, or $60.72/mo billed yearly

Agencies and heavy users.

Studio Creator

$300/yr

Regular voiceover and dubbing work.

Enterprise

Custom

Large companies producing video across departments.

Ultra

$159.99/mo, or about $119/mo billed yearly

Studios making video every day.

Team and API

Team from $79/seat/mo (3 to 15 seats); API pay per second

Businesses sharing credits or building Kling into their own tools.

Which plan to pickCreator covers most solo founders and marketers: no watermark, your own avatar and 30-minute videos. Move to Business only when you need SSO, more than one custom avatar or a team sharing the account.Test on the free credits, then take Pro if you make video every week. Standard's 660 credits go quickly once you start redoing clips. Paying yearly saves about a third, but only commit once you know you'll keep using it, because cancelling is the most common complaint.Premium is the plan for reading, and yearly is far cheaper than monthly. Set a reminder before the trial ends, and check whether the trial is set to bill monthly or yearly. Studio is a separate subscription; only buy it if you make voiceovers.

Key features

AttributeHeyGenKling AISpeechify
Standout features
  • Digital twin
  • Video translation
  • Stock avatars
  • Photo avatars
  • Templates and brand kit
  • API
  • Kling 4.0
  • Keyframes
  • Omni Reference
  • Kling 4.0 Flash
  • Motion Control
  • API, MCP and command line
  • Read anything aloud
  • Scan and listen
  • Natural voices
  • Up to 5x speed
  • AI summaries and podcasts
  • Speechify Studio

Pros and cons

AttributeHeyGenKling AISpeechify
Pros
  • Digital twins and translation are the best in the category for short clips
  • You can learn it in an afternoon
  • Big library of stock avatars, voices and templates
  • API and Zapier make personalised video at scale possible
  • Realistic motion and faces, near the top of the field
  • Up to 30 seconds in one clip, with keyframes and references for control
  • Low entry price, with failed generations refunded
  • API, MCP and command line for automation
  • Reads almost anything, including photos of printed pages
  • Works across Chrome, web, iPhone, Android, Mac and Windows
  • Natural voices and up to 5x speed
  • Real help for people with ADHD or dyslexia
Cons
  • Free plan is only enough for a test
  • Credits make the real cost hard to predict, especially for longer videos
  • Avatars look less natural the longer they talk
  • Your own avatar needs good lighting and a careful recording to look right
  • Many clips miss the brief, and only failed generations get credits back
  • Long clips can lose energy halfway and drift into a slow zoom
  • Common complaints about renewals, cancelling and slow support
  • Prices shown are often first-month deals, so the real monthly cost is higher
  • Owned by a Chinese company, which some clients will ask about
  • Trial rolls into a paid plan, and many people report surprise yearly charges
  • Monthly plans aren't refundable and yearly refunds have strict rules
  • Pricier than ElevenReader for similar listening
  • The Chrome extension sometimes misreads pages or skips the main text
  • Pushy upsells and discount offers when you try to cancel

Who each one is for

AttributeHeyGenKling AISpeechify
Best for
  • Explainer and product videos
  • Translating your videos
  • Personalised sales videos
  • Training content at scale
  • Realistic product and lifestyle clips
  • Longer single shots up to 30 seconds
  • Copying a dance or movement onto a character
  • Social ads on a tight budget
  • Listening to PDFs and reports
  • Reading support for ADHD and dyslexia
  • Getting through articles on the go
  • Turning printed pages into audio
You'll find it used by
  • Founders
  • Marketers
  • Sales teams
  • Trainers
  • Content creators
  • Marketers
  • Agencies
  • Filmmakers
  • Students
  • Professionals
  • People with ADHD
  • People with dyslexia

Questions people ask

Which is better, HeyGen, Kling AI or Speechify?

HeyGen scores highest overall in our ratings (HeyGen 4.1/5, Kling AI 4.0/5 and Speechify 4.0/5). HeyGen is best for explainer and product videos and translating your videos. Kling AI is best for realistic product and lifestyle clips and longer single shots up to 30 seconds. Speechify is best for listening to PDFs and reports and reading support for ADHD and dyslexia.

Which is cheaper, HeyGen, Kling AI or Speechify?

HeyGen: There's a free plan, and paid plans start at $29/mo. Kling AI: There's a free plan, and paid plans start at $8.80/mo ($6.99 first month). Speechify: There's a free plan, and paid plans start at $29/mo.

How we compare

Ratings are our own, from using each tool, across ease of use, features, output quality, value for money, speed & reliability.

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