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Favicon for speechify

Speechify: Simba 3.5

speechify/simba-3.5

BenchmarksCompare

Speechify's recommended streaming text-to-speech model, covering 48 languages including English under one model, with the language chosen per request.

Modalities
Price
$15/M characters
Released
Nov 11, 2026
BenchmarksCompare
PlaygroundProvidersPerformanceUptimeAppsActivityFAQExplore

Example outputs summary for Speechify: Simba 3.5

  • Text to Speech: The warm light flows across the OpenRouter office as the evening settles in and the routing never stops. One interface, hundreds of models. Ready when you are. — spoken by Speechify: Simba 3.5

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.

Not currently available through EU in-region routing. In-region routing docs

Explore more models

Best Text-to-Speech ModelsCollectionSpeech Model RankingsRanking
Latency
$15.000.16s
100.00%
ProviderChars /M
LatencyUptime
  • Favicon for Speechify
    Chars $15.00
    Latency 0.16sUptime 100.00%
Latency
0.16s

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.
100.00%

Availability over the last 3 days

Last 72 hours
Availability 100.00%
3 Days Ago2 Days AgoYesterdayNow

Availability over the last 24 hours

OpenRouter Availability
100.00%

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 provider routing options.

1.
Favicon for https://playground.dou.so/
dou tts-playground
new
460tokens
2.
Favicon for https://appassets.androidplatform.net/
DocWorm
new
5tokens
Rest of OpenRouter
8K
Top 5 Apps
465

Frequently asked questions

Speechify's recommended streaming text-to-speech model, covering 48 languages including English under one model, with the language chosen per request.

Simba 3.5 costs $15.00/M characters.

Simba 3.5 ships 20 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.

Simba 3.5 accepts text as input and returns generated speech audio.

Simba 3.5 is served by 1 provider on OpenRouter: Speechify.

Simba 3.5 was released on November 11, 2026.