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Model infoModelsSnapshot: 15 Oct 2026

Simli / Simli hosted avatar rendering

Legacy Character 1.5

Legacy avatar-generation family exposed as characterVersion 1.5. The enrollment route is deprecated; exact underlying rendering checkpoints are undisclosed.

deprecatedClosed-source managed componentVideo generation
Official documentation (opens in a new tab)Reviewed 14 Oct 2026
4 of 17 specification fields collected
Output resolutionNot collectedAwaiting source review
Clip durationNot collectedAwaiting source review
Input billingSee ratesSimli
Output billingSee ratesPublished units and conditions below

Specifications

Provider-documented facts. “Not collected” means we have not verified that field yet, not that the feature is unsupported.

Context / input limit
Not collected

No model-specific public value established in reviewed primary sources.

Maximum output
Not collected

No model-specific public value established in reviewed primary sources.

Context caching
Not collected

No model-specific public value established in reviewed primary sources.

Reasoning
Not collected

No model-specific public value established in reviewed primary sources.

Tool calling
Not collected

No model-specific public value established in reviewed primary sources.

Structured output
Not collected

No model-specific public value established in reviewed primary sources.

Batch processing
Not collected

No model-specific public value established in reviewed primary sources.

Fine-tuning
Not collected

No model-specific public value established in reviewed primary sources.

Parameters
Not collected

No model-specific public value established in reviewed primary sources.

Architecture
Not collected

No model-specific public value established in reviewed primary sources.

Knowledge cutoff
Not collected

No model-specific public value established in reviewed primary sources.

Languages
Not collected

No model-specific public value established in reviewed primary sources.

Release date
Not collected

No model-specific public value established in reviewed primary sources.

Input modalities
AudioSource for Input modalities (opens in a new tab)

A saved face supplies visual identity. Image upload for face creation is a separate enrollment step.

Output modalities
Video, AudioSource for Output modalities (opens in a new tab)

Video with supplied speech; audio playback does not establish native TTS.

Provider version
1.5Source for Provider version (opens in a new tab)

characterVersion on the deprecated face-enrollment route.

Access & pricing

Prices belong to an endpoint and billing tier. A provider listing does not guarantee access for every account or region.

API model ID
Not collected

faceId selects a saved avatar; generation version and API version do not establish a streaming checkpoint ID.

Access
POST https://api.simli.ai/compose/token with x-simli-api-key and a compatible faceId, then use the SDK with P2P or LiveKit WebRTC transport. Account and face availability apply.
Regions
No model-specific processing-region guarantee established. Provider is based in Norway; its privacy policy lists international service providers, which does not establish Norway-only inference.
audio
SDK streaming input: PCM16 audio at 16 kHz. The general audio guide demonstrates mono conversion; compressed-file support on the static route is separate.Source for audio (opens in a new tab)
sessionDefaults
maxSessionLength defaults to 3,600 seconds and maxIdleTime to 300 seconds. These are configurable defaults; a hard maximum is not published in the schema.Source for sessionDefaults (opens in a new tab)
transports
P2P and LiveKit WebRTC. Current AsyncAPI names /compose/webrtc/peer_to_peer and /compose/webrtc/livekit. The migration guide uses an older p2p shorthand; prefer the current SDK.Source for transports (opens in a new tab)
connectionDeadline
P2P offer must arrive within 30 seconds; LiveKit join must complete within 30 seconds. These are connection deadlines, not inference latency guarantees.Source for connectionDeadline (opens in a new tab)
playbackControls
SKIP clears queued audio immediately; DONE closes after the final audio plays. Server events include START, ACK, STOP, SPEAK and SILENT.Source for playbackControls (opens in a new tab)
silence
handleSilence defaults to true. The JavaScript guide recommends false when using listenToMediastreamTrack to avoid artifacts.Source for silence (opens in a new tab)
credentials
Keep API credentials on the backend and pass temporary session tokens to clients, as recommended by the SDK guide.Source for credentials (opens in a new tab)
Training data policy
Standard published terms and privacy policy permit training and service-development use of user content and activity data. No enterprise opt-out or inference-specific deletion guarantee established here.Source for Training data policy (opens in a new tab)
monitoring
GET /history/sessions supports Unix start/end-time filters. GET /ratelimiter/sessions reports active sessions. These are account APIs, not additional models.Source for monitoring (opens in a new tab)
enrollment
Deprecated POST /faces/legacy with characterVersion=1.5 and an uploaded image. Generation-status and face-deletion routes are also marked deprecated. Availability depends on account and face status.Source for enrollment (opens in a new tab)
freePlan
Free plan lists 50 minutes/month and 1 concurrent session. The homepage separately mentions $10 on signup; that is promotional credit, not a permanent inference tariff.Source for freePlan (opens in a new tab)
plans
Hobby: $10/month; 200 minutes/month; published $0.05/min; 2 concurrent sessions; Unlimited generations. Pro: $49/month; 1,100 minutes/month; published $0.048/min; 10 concurrent sessions; Unlimited generations. Scale: $249/month; 5,500 minutes/month; published $0.05/min; 50 concurrent sessions; Unlimited generations.Source for plans (opens in a new tab)
planConditions
Unlimited agents does not mean unlimited simultaneous sessions or usage minutes. Enterprise pricing is custom. Displayed per-minute rates are not explicitly labeled overage; effective bundle arithmetic may differ.Source for planConditions (opens in a new tab)

Prices retain their published currencies and billing units below.

Published billing units · original currency · observed 14 Oct 2026
CategoryUsageRateUnit
Legacy planHobby displayed minute rate1$0.05minute
Legacy planPro displayed minute rate2$0.048minute
Legacy planScale displayed minute rate3$0.05minute

Rate conditions

  1. Published Hobby plan rate with $10/month subscription, 200 included minutes/month and 2 concurrent sessions. Copied from the selected Legacy pricing panel, not derived by division. The card does not specify whether this is an overage tariff. No mapping to FastTalk/ARTalk or static-generation billing is assumed; connected speech/LLM services are separate.
  2. Published Pro plan rate with $49/month subscription, 1100 included minutes/month and 10 concurrent sessions. Copied from the selected Legacy pricing panel, not derived by division. The card does not specify whether this is an overage tariff. No mapping to FastTalk/ARTalk or static-generation billing is assumed; connected speech/LLM services are separate.
  3. Published Scale plan rate with $249/month subscription, 5500 included minutes/month and 50 concurrent sessions. Copied from the selected Legacy pricing panel, not derived by division. The card does not specify whether this is an overage tariff. No mapping to FastTalk/ARTalk or static-generation billing is assumed; connected speech/LLM services are separate.
Pricing source (opens in a new tab)

Data & enterprise terms

Published privacy policy permits use of content and activity data for training/research. User content is retained as necessary; account data is deleted on request or within 12 months after account termination, while name/email have a separate 24-month period. Legal exceptions and connected providers apply; no default zero-retention promise.

Read the service policy (opens in a new tab)
API model ID
Not collected

faceId selects a saved avatar; generation version and API version do not establish a streaming checkpoint ID.

Access
POST https://api.simli.ai/static/audio with a compatible faceId, audioBase64 and audioFormat. Returns HLS and MP4 URLs. The generic request schema does not publish per-generation compatibility, duration or size ceilings.
Regions
No model-specific processing-region guarantee established. Provider is based in Norway; its privacy policy lists international service providers, which does not establish Norway-only inference.
Audio formats
pcm16, pcm32, wav, mp3, oggSource for Audio formats (opens in a new tab)
audioDefaults
audioSampleRate defaults to 16,000 Hz; audioChannelCount defaults to 1; videoStartingFrame defaults to 0. These defaults do not prove a fixed model sample rate or token context.Source for audioDefaults (opens in a new tab)
speechInput
The old textToVideoStream route was removed. Generate TTS externally, then submit audio; no native Simli text-to-speech model is inferred.Source for speechInput (opens in a new tab)
Pricing terms
The public rate card does not separately specify static-file generation pricing or confirm that it matches live streaming. No standalone static tariff assigned.Source for Pricing terms (opens in a new tab)

Endpoint pricing has not been collected. Check the provider for applicable rates.

Data & enterprise terms

Published privacy policy permits use of content and activity data for training/research. User content is retained as necessary; account data is deleted on request or within 12 months after account termination, while name/email have a separate 24-month period. Legal exceptions and connected providers apply; no default zero-retention promise.

Read the service policy (opens in a new tab)

Caching

Caching can reuse earlier input processing. Availability, lifetime and billing depend on the endpoint. A cache hit still generates a new response.

01 / INITIAL INPUTProcess & retain

The system processes eligible input and retains reusable state.

02 / LATER REQUESTCheck available state

Reuse depends on matching input, session state and the cache policy.

03 / CACHE HITReuse & generate

Reusing state can reduce repeated work. Any charges follow the billing rules below.

Simli

Not verified

Persistent avatar faces, generation-status history and reusable session tokens are not a documented prompt-cache or discounted token-input contract.

How it works
Not collected

Persistent avatar faces, generation-status history and reusable session tokens are not a documented prompt-cache or discounted token-input contract.

Minimum reusable input
Not collected

Persistent avatar faces, generation-status history and reusable session tokens are not a documented prompt-cache or discounted token-input contract.

Lifetime & refresh
Not collected

Persistent avatar faces, generation-status history and reusable session tokens are not a documented prompt-cache or discounted token-input contract.

How to enable it
Not collected

Persistent avatar faces, generation-status history and reusable session tokens are not a documented prompt-cache or discounted token-input contract.

Usage fields
Not collected

Persistent avatar faces, generation-status history and reusable session tokens are not a documented prompt-cache or discounted token-input contract.

Billing rules
Not collected

Persistent avatar faces, generation-status history and reusable session tokens are not a documented prompt-cache or discounted token-input contract.

Limits & data boundaries
Not collected

Persistent avatar faces, generation-status history and reusable session tokens are not a documented prompt-cache or discounted token-input contract.

No verified cache rate for this endpoint. An empty rate is not a zero charge.

Caching reviewed 14 Oct 2026

Simli

Not verified

Persistent avatar faces, generation-status history and reusable session tokens are not a documented prompt-cache or discounted token-input contract.

How it works
Not collected

Persistent avatar faces, generation-status history and reusable session tokens are not a documented prompt-cache or discounted token-input contract.

Minimum reusable input
Not collected

Persistent avatar faces, generation-status history and reusable session tokens are not a documented prompt-cache or discounted token-input contract.

Lifetime & refresh
Not collected

Persistent avatar faces, generation-status history and reusable session tokens are not a documented prompt-cache or discounted token-input contract.

How to enable it
Not collected

Persistent avatar faces, generation-status history and reusable session tokens are not a documented prompt-cache or discounted token-input contract.

Usage fields
Not collected

Persistent avatar faces, generation-status history and reusable session tokens are not a documented prompt-cache or discounted token-input contract.

Billing rules
Not collected

Persistent avatar faces, generation-status history and reusable session tokens are not a documented prompt-cache or discounted token-input contract.

Limits & data boundaries
Not collected

Persistent avatar faces, generation-status history and reusable session tokens are not a documented prompt-cache or discounted token-input contract.

No verified cache rate for this endpoint. An empty rate is not a zero charge.

Caching reviewed 14 Oct 2026

What the measurements say

No benchmark observations have been added for this model. We do not turn a vendor description into a performance score.

Latency and throughput depend on the host, request size, reasoning settings and load. There is no measured speed or global usage figure in this record.

The record behind the model

Why it is included

An explicitly documented version family or callable service selector. Underlying checkpoint identity is undisclosed, so this is cataloged as a managed component rather than a claim of independently identified native weights.

Classification evidence (opens in a new tab)

Sources reviewed