Comparison

D-ID vs SynthesiaWhich AI Avatar Platform Is Right for You?

D-ID and Synthesia both help businesses create professional videos with realistic AI avatars without cameras, actors, or traditional production.

Both platforms now extend beyond pre-recorded video into real-time avatar experiences. The differences become clearer when you look at what those avatars can do and how they are deployed.

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D-ID

D-ID combines AI video, Agentic Video, and real-time AI Avatar Agents that can work with company knowledge, use tools to interact with business systems, embed into digital experiences, and run inside customer-controlled infrastructure.

Synthesia

Synthesia provides an extensive environment for enterprise video creation, localization, collaboration, interactive learning, dedicated Roleplay Sessions, and developer-built real-time avatar experiences through its Interactive Avatar API.

Product information last reviewed: September 18, 2026

Quick answer: D-ID vs Synthesia

D-ID and Synthesia both offer strong AI video and real-time avatar capabilities. D-ID combines AI video with Agentic Video and broader AI Avatar Agents that can roleplay, answer questions, access knowledge and live data, trigger actions, embed into websites, and run inside customer-controlled infrastructure. Synthesia stands out for enterprise video workflows, 160+ languages, structured interactive learning, SCORM, and dedicated Roleplay Sessions.

Capabilities

D-ID vs Synthesia at a glance

Information verified as of September 18, 2026. Statements about the absence or availability of a Synthesia capability refer only to information that could be verified in publicly available Synthesia materials as of that date.

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Capability	D-ID	Synthesia
Platform and avatars
Platform focus	AI video + Agentic Video + AI Avatar Agents	AI video + Interactive Avatars + Roleplay Sessions
AI avatar video creation	Yes	Yes
Latest expressive avatar technology	V4 Expressive Avatars	Express-3
Real-time agents
Real-time conversational avatars	AI Avatar Agents	Interactive Avatars
Managed real-time AI agent stack	Avatar, LLM, knowledge & voice configurable as one agent	Customer currently provides agent logic, LLM & STT
Simple website embed for real-time avatars	Single script tag, no backend required	No no-code embed currently documented
Interactivity inside video
Open-ended conversations inside existing videos	Agentic Video	No directly comparable native format identified in public documentation
Structured interactive video	Conversational interaction through Agentic Video	Quizzes, branching & SCORM
Knowledge, tools and data
Knowledge grounding / RAG	Yes	Yes
Tool calling / actions	Yes	Yes
Live data & workflow actions	Built-in server & client tools	Possible through customer-built agent stack
Custom / external LLM support	Yes	Yes
Conversation exports	Built-in chat exports	Customer currently captures transcripts on its side
API & SDK access	Yes	Yes
Reach and performance
Video language coverage¹	120+ languages & accents	160+ languages
Stock avatar library	Yes	240+ avatars
Published end-to-end conversational latency	Under 500 ms for V4	No directly comparable public target identified
Deployment and roleplay
Self-hosted avatar rendering	AWS, Azure, GCP & private environments	Avatar rendering currently Synthesia-hosted
Customer-controlled real-time deployment	Full avatar layer can run in customer environment	Customer controls agent stack; avatar renderer remains Synthesia-hosted
Configurable roleplay	AI Avatar Agents	Yes
Dedicated roleplay training with scoring & analytics	Configurable through AI Avatar Agents	Roleplay Sessions
Enterprise and pricing
SOC 2	Yes	Type II
ISO/IEC 42001	Yes	Yes
Enterprise pricing	Custom	Custom

¹ Statements about the absence or availability of a Synthesia capability refer only to information that could be verified in publicly available Synthesia materials as of the stated review date. Back to table

Synthesia’s Interactive Avatar architecture currently follows a bring-your-own-stack model: customers provide the LLM, agent logic, and speech-to-text layer, while Synthesia renders the real-time avatar. Its documentation currently lists no no-code embed and no built-in session list, transcripts, recordings, or webhook system. Source: Synthesia Interactive Avatar documentation

D-ID provides a configurable agent stack with LLMs, knowledge bases, website embedding, chat exports, and tools for calling external systems. An agent can be embedded on a website using a single script tag without backend code.

See D-ID in action

The difference between AI video, Agentic Video, and an AI Avatar Agent is easier to experience than to explain.

Turn watching into a conversation

Watch the video, interrupt the presenter with a question, receive an answer based on the content, and continue where you left off.

Try Agentic Video

Demo coming soon

Watch a D-ID AI video

See how V4 Expressive Avatars combine realistic facial movement, voice, and expressive delivery in scripted content.

Create an AI video

Demo coming soon

Have a real-time conversation

Talk to an AI Avatar Agent that can answer questions, work with knowledge, and interact with connected systems.

Talk to an AI Avatar Agent

AI video creation: two platforms with different strengths

Both D-ID and Synthesia provide substantial AI video creation capabilities.

D-ID

D-ID’s AI video generator creates presenter-led videos with realistic avatars, voices, multilingual output, customizable content, and API-based generation. V4 Expressive Avatars can use different sentiments and also power D-ID’s real-time experiences.

Synthesia

Synthesia has built a particularly extensive enterprise video-production environment. It currently offers 240+ stock avatars, 160+ languages, collaboration and brand features, localization, interactive video, and its latest Express-3 avatar generation.

D-ID’s differentiation becomes more important when video needs to lead into an open-ended conversation or wider agent experience.

Explore D-ID AI Video

Turn video from playback into conversation

Synthesia provides strong structured interactivity for learning and enterprise content, including quizzes, branching, and SCORM-based workflows.

D-ID Agentic Video takes a different approach.

Instead of defining every possible interaction in advance, viewers can interrupt an existing video and ask an AI Avatar Agent open-ended questions about what they are watching.

Explore Agentic Video

A learner could ask: “Can you give me another example?”

A customer could ask: “How would this work for our company?”

An employee could ask: “Which policy applies in my situation?”

The agent can answer using the video content and additional connected knowledge before the viewer continues watching.

The distinction is useful: Synthesia is an option when creators want to design the interaction in advance. D-ID Agentic Video is designed for questions the creator cannot predict.

Architecture

D-ID AI Avatar Agents vs Synthesia Interactive Avatars

Both companies offer real-time conversational avatar technology, but the current product models differ.

Synthesia Interactive Avatars

Customers currently bring their own LLM and speech-to-text infrastructure.

LLMCustomer provides
Agent logicCustomer provides
Speech-to-textCustomer provides
Real-time avatar renderingSynthesia provides

Synthesia provides avatar rendering and optional text-to-speech, with LiveKit used to connect the experience.

D-ID AI Avatar Agents

D-ID provides the conversational agent as a configurable product while still supporting developer customization.

An expressive or custom avatar
LLM instructions and behavior
Supported or custom models
RAG-based knowledge
Voice
Tools and external systems
Website embedding
APIs and SDKs
Conversation exports

D-ID’s current developer platform exposes all of these as parts of the realtime agent offering.

Synthesia provides a real-time avatar-rendering layer for developer-built conversational experiences. Its official quickstarts demonstrate RAG and tool calling, so developers can build knowledge-grounded avatars that also perform actions.

This gives development teams considerable freedom, but more of the surrounding application currently needs to be built and managed by the customer.

More than roleplay

Roleplay is one application of D-ID AI Avatar Agents. An agent can simulate a customer or prospect for training, but it can also answer questions from approved knowledge, retrieve live account or inventory information, guide a customer through a process, create a support ticket, send a follow-up, start a checkout, or perform an action in the user’s browser.

D-ID’s server and client tools are designed specifically for these kinds of actions during a conversation.

Synthesia’s Roleplay Sessions, by contrast, are purpose-built for skills training. They combine instructional content, a live avatar conversation, automated feedback, skill scoring, transcripts, and analytics.

That makes the positioning different:

Synthesia offers a specialized roleplay and coaching product.
D-ID provides a broader AI Avatar Agent platform in which roleplay is one of many possible use cases.

Explore AI Avatar Agents

Real-time performance

Built for real-time conversations

For conversational avatars, latency and synchronization become part of the user experience.

D-ID publishes explicit performance targets for V4 Expressive Avatars:

Under 500 ms

End-to-end conversational latency

Under 120 ms

Avatar-model latency

200+ FPS

Rendering performance

Context-sensitive facial expressions
Multiple sentiments
Up to 4K output

Explore V4 technical specifications

Run real-time avatars inside your own environment

Deployment architecture creates one of the clearest differences between the platforms.

For organizations that require the avatar-rendering technology itself to operate inside their own infrastructure, D-ID therefore provides a different deployment option.

Explore Self-Hosted Expressive Avatars

D-ID

D-ID’s Self-Hosted Expressive Avatars can run inside customer-controlled AWS, Azure, GCP, and private environments. D-ID states that conversations, configurations, and assets can remain inside the customer’s network, with no fixed concurrency cap beyond the infrastructure provisioned by the customer. Its self-hosted avatar model renders in under 200 ms.

Synthesia

Synthesia lets developers control their conversational agent and LiveKit environment, but its Interactive Avatar model currently uses Synthesia for the avatar-rendering layer. Synthesia’s published security practices also state that the wider platform runs on AWS public-cloud infrastructure and does not use private or hybrid cloud.

Source: Synthesia security practices

Enterprise security and governance

Both D-ID and Synthesia provide mature enterprise security programs.

D-ID publishes SOC 2 alongside ISO/IEC 27001, 27017, 27018, 42001, and 27799 certifications.

SOC 2
ISO/IEC 27001
ISO/IEC 27017
ISO/IEC 27018
ISO/IEC 42001
ISO/IEC 27799

Synthesia publishes periodic ISO/IEC 27001, ISO/IEC 42001, and SOC 2 Type II audits.

For buyers, the important distinction is therefore less about whether either platform has enterprise security and more about the specific governance, data, and deployment requirements of the intended workload.

Security and certification information reviewed September 18, 2026.

D-ID vs Synthesia pricing

D-ID and Synthesia use different plan and usage structures, so entry subscription prices do not provide a complete comparison.

D-ID

D-ID offers Studio, API, and Enterprise options, with different usage models for video and real-time AI Avatar Agents.

Explore D-ID pricing

Synthesia

Synthesia currently offers Basic, Starter, Creator, and Enterprise plans, with credits used across several AI capabilities. Interactive Avatar usage is also credit-based.

Synthesia’s live pricing page

For current rates, use the providers’ live pricing pages. For an enterprise evaluation, compare the full workload: video volume, real-time interaction, languages, APIs, LLM infrastructure, learning requirements, security, and deployment model.

Pricing information checked September 18, 2026. Prices, credits, and plan structures may change.

Which platform fits your use case?

If you need…	What to consider
Professional AI avatar videos	D-ID
Open-ended Q&A inside an existing video	D-ID Agentic Video
Structured quizzes, branching & SCORM	Synthesia
Real-time conversational avatars	D-ID
A managed AI Avatar Agent without building the full stack	D-ID
Simple website embedding without a backend	D-ID
RAG and tool calling	Both
Dedicated roleplay training with scoring & analytics	Synthesia Roleplay Sessions
Roleplay plus broader support, guidance and agent workflows	D-ID AI Avatar Agents
Live data and business-system actions	D-ID AI Avatar Agents
Built-in conversation exports	D-ID
Customer-controlled avatar rendering	D-ID
Private cloud / VPC avatar deployment	D-ID
Published sub-500 ms end-to-end latency target	D-ID

Synthesia is an option for enterprise video production, structured learning, and dedicated skills practice.

D-ID becomes particularly relevant when the roadmap expands into Agentic Video, broader AI Avatar Agents, system actions, embedded conversational experiences, or customer-controlled real-time infrastructure.

AI avatars can do more than present content

Both platforms have expanded far beyond basic talking-head video. The key question is what the avatar needs to do next.

If the primary requirement is enterprise video production, localization, interactive learning, and structured roleplay with coaching and analytics, Synthesia provides an extensive environment.

If the roadmap includes letting viewers talk directly to video content, deploying AI Avatar Agents across customer and employee experiences, connecting conversations to business systems, or running the avatar inside your own infrastructure, D-ID takes a broader agent approach.

Start creating with D-ID Talk to our enterprise team

FAQs

What is the main difference between D-ID and Synthesia?

D-ID combines AI video with Agentic Video and broader AI Avatar Agents that can use knowledge, tools, external systems, and optional self-hosted avatar infrastructure. Synthesia has an enterprise video and learning environment, including broad language coverage, interactive video, SCORM, and dedicated Roleplay Sessions.

What is the difference between D-ID AI Avatar Agents and Synthesia Interactive Avatars?

D-ID provides a managed, configurable agent that can combine the avatar, LLM, knowledge, voice, tools, embedding, and conversation exports. Synthesia currently takes a more component-oriented approach: developers connect their own conversational stack to Synthesia’s real-time rendering technology.

Can D-ID AI Avatar Agents be used for roleplay?

Yes. D-ID AI Avatar Agents can be configured with roles, instructions, knowledge, and behavior for training simulations. Roleplay is only one use case. The same agents can answer questions, access live information, guide users, and call tools or business workflows.

What is D-ID Agentic Video?

Agentic Video lets viewers interrupt existing video content and have an open-ended voice or chat conversation with an AI Avatar Agent before continuing the video.

Can D-ID AI Avatar Agents take actions?

Yes. D-ID Tools allow agents to retrieve live data, call APIs, trigger backend workflows, and perform browser-side actions during a conversation.

Can D-ID or Synthesia run inside a company’s own cloud?

D-ID offers Self-Hosted Expressive Avatars for customer-controlled cloud and private environments. Synthesia’s Interactive Avatar architecture lets customers control their own conversational stack, while the avatar rendering itself remains part of Synthesia’s service.

Comparison methodology and information notice

This comparison is based on publicly available product information, documentation, pricing pages, and security materials from D-ID and Synthesia reviewed as of September 18, 2026, unless a section specifies another verification date.

Products, features, pricing, certifications, deployment options, language coverage, and availability may change independently over time. Some enterprise capabilities may also exist without being publicly documented.

Statements about the absence or availability of a Synthesia capability refer only to information that could be verified in publicly available Synthesia materials as of the stated review date.

For the most current information, consult the respective D-ID and Synthesia documentation or contact the providers directly.