AI inference

TextSynth

Access large language, text-to-image, and speech models via REST API and playground

textsynth.com

Verified API available

Quick facts
What is it	Access large language, text-to-image, and speech models via REST API and playground
Pricing	Paid
Free tier	Yes
Platform	Web Application
API	Yes
Best for	building AI-powered applications, generating creative content
Domain registered	2019

Data updated Aug. 1, 2026

What does TextSynth do?

TextSynth is a straightforward API and playground service that gives you access to a range of large AI models — think Mistral, Llama, Stable Diffusion, and Whisper. You can use it for text completion, question answering, classification, chat, translation, image generation, speech generation, and speech-to-text transcription. The basic tier is free but rate-limited; if you need more, you pay a small amount per request. All servers are in France.

What makes TextSynth stand out is its custom inference code. The team behind it optimized things to run faster on standard GPUs and CPUs, which keeps costs lower. The site launched in 2020 and was one of the first to offer GPT-2 access. You interact with the models either through a REST API (with clear documentation) or a browser-based playground — so you can test ideas before coding. It’s a no-fuss way to experiment with multiple AI models without managing infrastructure.

This tool is best suited for developers, researchers, and hobbyists who want a simple, pay-per-use gateway to modern AI models. If you’re prototyping a chatbot, generating images for a project, or transcribing audio, TextSynth lets you plug in quickly. The free tier is handy for small experiments, and the pricing stays reasonable for larger workloads.

AI API AI inference Developer Tools LLM

#ai api#developer tools#image generation#language models#speech synthesis#text generation#transcription

Key features

What makes it stand out

Access to Mistral, Llama, Stable Diffusion, Whisper and more via one API

Custom inference code for faster processing on standard GPUs and CPUs

REST API with playground for quick testing without code

Free basic tier with rate limits, then pay-per-request for unlimited use

Servers located in France for data residency control

Who is TextSynth for?

Who benefits most from this tool

building AI-powered applications

generating creative content

transcribing audio content

Pricing

Free tier available — start without a credit card

Free Plan

Free

200 max tokens per request
3 speech to text max duration minutes
Free access to all the language models with request rate limitation and regular captcha completion
At most 200 generated tokens per request
Speech to text transcription duration is limited to 3 minutes
All requests are logged on our servers

Standard Plan

Custom

varies by model (see table) pricing per million input tokens
varies by model (see table) pricing per million generated tokens
Access to all the language models without rate limitation
No limitation on the number of generated tokens
No log of the request content is kept on our servers
Credit based hence no unexpected expense
Simple pricing based on the number of input and generated tokens

Trust & presence

Domain Domain registered 2019

Gallery

Click any image to enlarge

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