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Favicon for deepgram

Deepgram: Flux TTS (free)

deepgram/flux-tts:free

BenchmarksCompare

Flux TTS is a text-to-speech model from Deepgram. It is suited for natural, expressive English speech synthesis across Deepgram's Flux voice catalog.

Modalities
Price
Free
Released
Aug 12, 2026
BenchmarksCompare
PlaygroundProvidersPerformanceUptimeAppsActivityFAQExplore

Playground

Providers

This model is hosted by one provider. OpenRouter forwards every request to it directly — no routing decisions to make.

Performance

Throughput is how fast the model writes (tokens per second — higher is better). Latency is total round-trip time (lower is better). TTFT is time-to-first-token — how long before you see anything appear (lower is better).

Uptime

Uptime is the percentage of the past 3 days that at least one provider was responding to requests. Availability is the percentage of time that inference was successfully served. OpenRouter continuously monitors and uses the next-best provider when one returns an error.

Apps

Public apps that send the most traffic to this model. Good signal for what real production workloads look like — and a hint at which use cases this model is best suited for.

Activity

Token volume and request traffic to this model over time.

API

Drop-in code to call this model. OpenRouter's API is OpenAI-compatible — most SDKs work by just swapping the base URL. The only thing that changes between models is the model slug below.

Explore more models

Free AI Models on OpenRouterCollectionBest Text-to-Speech ModelsCollectionSpeech Model RankingsRanking
FreeFree0.45s
100.00%
Latency
0.45s

P50, best provider

Uptime (3d)The model was reachable. Request routed to a provider.
100.00%
Availability (3d)The model returned inference from any provider. Errors and empty responses count against it.
99.97%

Availability over the last 3 days

Last 72 hours
Availability 99.97%
3 Days Ago2 Days AgoYesterdayNow

Availability over the last 24 hours

OpenRouter Availability
99.91%

When an error occurs in an upstream provider, we can recover by routing to another healthy provider, if your request filters allow it. You can access per-provider uptime data programmatically through the Endpoints API. Learn more about our load balancing and customization options.

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Frequently asked questions

Flux TTS is a text-to-speech model from Deepgram. It is suited for natural, expressive English speech synthesis across Deepgram's Flux voice catalog.

Yes. The pricing shown on this page for Flux TTS (free) is zero, so you are not charged for generated speech. Free endpoints are rate limited — see the rate limit docs.

Flux TTS (free) ships 36 voices. Pass a voice ID in the voice field of a text-to-speech request; the IDs this endpoint accepts are listed with the model in the models API.

Flux TTS (free) accepts text as input and returns generated speech audio.

Aura-2 is another speech model from Deepgram.

Flux TTS (free) was released on August 12, 2026.

More models from deepgram

Flux TTS

Flux TTS is a text-to-speech model from Deepgram. It is suited for natural, expressive English speech synthesis across Deepgram's Flux voice catalog.

SpeechFree
Aura-2

Aura-2 is a multilingual text-to-speech model from Deepgram. It supports Deepgram’s canonical Aura-2 voice catalog for speech synthesis across multiple languages.

Speech$30/M characters
Nova-3

Deepgram Nova-3 general-purpose speech-to-text model with monolingual and multilingual transcription support.

Transcriptionfrom $0.000072/second