DriversRecommendedOutdated drivers can make a good PC feel brokenScan driver issues before chasing fixes manually.Scan NowOctober DealsAmazon USOctober deal check: compare before you payAmazon US: current deals, useful picks and tech finds.Check DealsClean PCRecommendedOne scan can reveal what keeps slowing WindowsLook for cleanup and repair opportunities.Run Scan×
Skip to content
ThatPainter
AI image generation

Stable Diffusion 3 API Launched in 2024: What Happened to Stable Assistant?

Stable Assistant began as a limited beta featuring Stable Diffusion 3, then grew into a broader creative app. Stability AI says it was sunset on October 1, 2026; the app’s closure is separate from the SD3 model and API lifecycle.

By ThatPainter Team 5 min read
Worth Installing

Windows Errors? Fix Them Before They Spread

Special offer. See more information about Outbyte and uninstall instructions. Please review EULA and Privacy policy.

Outbyte PC Repair · freeRepair common Windows errors and clear accumulated junk for a smoother, more stable PC - no reinstall needed.Free scan · no reinstallFix My PC Now →

Special offer. See more information about Outbyte and uninstall instructions. Please review EULA and Privacy policy.

ThatPainter is reader-supported. When you buy through links on our site, we may earn an affiliate commission. Learn More

Stable Assistant began as a limited beta featuring Stable Diffusion 3, then expanded into a broader creative application. Stability AI says it sunset the application on October 1, 2026; the SD3 model and Developer Platform API have separate lifecycles, and the SD 3.0 API endpoints were deprecated in 2025 and rerouted to SD3.5 equivalents.

This distinction matters if you are looking for the old app, checking a subscription, or building with Stability AI models: the app’s sunset does not mean the models or API were also discontinued.

What happened to Stable Assistant?

Stability AI’s support notice says Stable Assistant was sunset on October 1, 2026. Its still-live product page describes features, but the later support notice is the relevant source for availability. Do not assume the application remains usable based on that marketing page.

Special offer. See more information about Outbyte and uninstall instructions. Please review EULA and Privacy policy.

The notice describes subscription cancellation and refund arrangements. It says month-to-month subscriptions were automatically set to cancel September 30, 2026, with refunds for remaining subscription time after that date minus credit consumption in the final period. Annual subscribers were to receive refunds for remaining subscription time and unused September credits on September 30. Stability AI estimated refunds would take 5 to 10 business days to reach the original payment method. These are the company’s stated arrangements, not confirmation that an individual refund was completed.

#1 Best Overall
ANFIER Language Translator Device 144 Languages and Accents with 3.7 inch Touchscreen [Latest Generation Smart Translator-W12] AI Image Translator Device Portable Two-Way Voice Translator W12 Black
  • 【Anfier's W12: The Ultimate Translator for 144 Languages】 Say goodbye to language barriers with Anfier's W12 translator! Our innovative device delivers lightning-fast response times of less than 0.5 seconds with an impressive 98% accuracy rate in 144 different languages. Powered by Anfier's leading-edge ASR Technology and advanced search engines, our servers and accelerators located around the world ensure you always get the best translation possible.
  • 【Accurate Offline Translation Anytime, Anywhere】 Anfier's offline translator device is the perfect solution for those who want accurate translations without relying on an internet connection. With support for 10 different languages, including Spanish, English, Chinese, Japanese, French, German, Arabic, Russian, Korean, and Thai, our device can translate between any combination of these languages, making communication easier and more convenient, even with limited internet access.
  • 【Crystal Clear Communication with W12 HD Screen】 Our W12 language translator boasts an impressive 3.7" HD screen that is twice as large as traditional handheld translators, offering an ultra-clear resolution. Despite its impressive size, this pocket translator is compact and lightweight, weighing only 103g, making it easy to carry with you wherever you go.
  • 【Supreme Battery Life for Long-Lasting Translation】 With Anfier's high-quality 1500mAh battery, our translation device can work continuously for up to 8 hours on a single charge, taking only 1-2 hours to fully charge. You can take it with you wherever you go and never worry about running out of battery.
  • 【Diverse Voice Switch】 Anfier's voice translator device supports both male and female voice translation, ensuring accurate translations every time, regardless of your preferred voice. Our product also comes with a lifetime warranty, giving you the peace of mind to buy with confidence. Don't let language barriers hold you back any longer - try Anfier's W12 translator today!

The notice does not specify how long former users’ files remain available or whether the login endpoint continues working after sunset. Contact Stability AI support with account or file-access questions; do not assume access or deletion timing.

Timeline: SD3, the API, and Stable Assistant

Date What happened
February 22, 2024 Stability AI announced an early preview and waitlist for Stable Diffusion 3.
April 17, 2024 Stable Diffusion 3 and SD3 Turbo became available through the Developer Platform API. The announcement also introduced Stable Assistant as a limited beta featuring SD3.
June 2024 Stability AI released SD3 Medium. The company later acknowledged that the release had not met community expectations, citing issues including body poses and uncommon words.
April 17, 2025 Stability AI deprecated the SD 3.0 API endpoints and said calls were rerouted to SD3.5 equivalents at no extra cost.
May 20, 2026 Stability AI’s Core Models page listed SD3 Medium and several SD3.5 models, subject to Community or Enterprise agreements.
October 1, 2026 Stability AI says Stable Assistant was sunset.

How the model, API, and app differ

These are three separate things: Stable Diffusion 3 is a model family; the Developer Platform API is a service for developers; and Stable Assistant was a web application for people who wanted a ready-made creative interface. The API’s model routing and the app’s sunset are separate product events.

What Purpose Current status from the researched sources
Stable Diffusion 3 model family Image-generation models and weights Stability AI’s May 2026 Core Models page listed SD3 Medium and SD3.5 models under applicable agreements.
Developer Platform API Integrate image generation into software and workflows SD 3.0 endpoints were deprecated in April 2025 and calls rerouted to SD3.5 equivalents, according to Stability AI’s API documentation.
Stable Assistant Ready-made web creative application Stability AI says it was sunset on October 1, 2026.

What launched in April 2024?

On April 17, 2024, Stability AI announced SD3 and SD3 Turbo for its Developer Platform API, alongside a limited Stable Assistant beta featuring SD3. The hosted API let developers request image generation through the service; it was not the same thing as downloading model weights for self-hosting.

What’s actually slowing this PC down?

Pick the symptom - the matching free tool is one click away.

Special offer. See more information about Outbyte and uninstall instructions. Please review EULA and Privacy policy.
Rank #2
Amazon Fire TV Cube, with AI-powered Fire TV Search, Hands-free streaming device, find shows faster with Alexa+, Wi-Fi 6E, 4K Ultra HD
  • Our fastest-ever streaming media player - Brings lightning-fast app starts with an octa-core processor and is 2X as powerful as Fire TV Stick 4K Max.
  • The newest Fire TV experience (2026) – Our biggest update to Fire TV has a new, modern design that gets you to your entertainment fast. Browse dedicated content categories, pin more of your favorite apps, and get personalized recommendations from Alexa+. Spend less time scrolling, and more time watching.
  • Smarter picks with Alexa+ – Getting to what you love has never been easier. Press the voice remote button and talk naturally to find what to watch across your apps, manage your smart home, or dive into virtually any topic.
  • Hands-free Alexa with built-in mic and speakers - Control your compatible TV, soundbar, and receivers with your voice, even from across the room.
  • Seamlessly navigate between your entertainment - Connect compatible devices and easily go from streaming to your cable box, game console, or webcam.

Stability AI described SD3’s Multimodal Diffusion Transformer architecture as using separate sets of weights for image and language representations, and said this improved text understanding and spelling compared with prior Stable Diffusion versions. These are the company’s technical and performance claims, not independent benchmark findings. The April announcement also attributed 99.9% service availability to its enterprise-grade API solution delivered with Fireworks AI; treat that as a historical vendor claim, not a current service-level guarantee.

Stable Assistant later grew into a broader creative application. Its product page described image generation and editing, audio, 3D, and chat. Those details describe the app’s historical scope, not its availability after the sunset date.

What should API users do now?

Stability AI’s API documentation says SD 3.0 endpoints were deprecated on April 17, 2025, and calls were rerouted to SD3.5 equivalents at no extra cost. The current documentation presents SD3.5 as the active base-model family. Check the live API reference for the endpoint, model identifier, request parameters, pricing, and availability before building or updating an integration.

Rank #3
Sale
Phomemo M08F Tattoo Stencil Printer, Bluetooth, Wireless, Thermal, Portable
  • High Compatibility: Phomemo Bluetooth Tattoo Stencil Printer is compatible with smartphones, tablets, laptops, and desktops, and supports Android, iOS, Windows, MacOS, and ChromeOS systems for a wide range of tattoo designs and prints.
  • Portable and Lightweight: Phomemo M08F Wireless Thermal Tattoo Printer is an ultra-portable, wireless device designed specifically for tattoo artists, weighing in at just 2 pounds with a rechargeable battery for on-the-go use.
  • Powerful Phomemo App: Phomemo M08F Tattoo Transfer Printer is paired with a powerful app for use that streamlines the printing process and eliminates the need for traditional multi-step printing methods through one-touch image and document printing and scanning capabilities customized for tattoo designs.
  • High-Quality & Inkless Printing: Phomemo M08F Tattoo Printer Employs advanced thermal technology for precise pattern printing, eliminating ink-related issues for a clean, efficient, and professional tattooing experience.
  • Unleash Your Creativity with AI: Generate stunning tattoo designs in multiple styles—including classic, minimalist, realistic, neo-traditional, baroque, and Japanese traditional—instantly with Phomemo App’s cutting-edge AI image generation. (Note: Regular users get 6 designs. Unlock unlimited creations and exclusive features with Pro+!)
  1. Check the current API reference. Do not copy an endpoint or model ID from a 2024 launch announcement.
  2. Confirm the model and request behavior. Verify supported parameters and the documented migration or routing behavior.
  3. Review current costs and terms. The researched sources do not establish a current price comparison; check live pricing and the applicable agreement.
  4. Test your workflow. Evaluate results for your own prompts and use case rather than relying on historical vendor claims.

Model availability and licensing

Stability AI’s May 2026 Core Models page listed SD3 Medium alongside SD3.5 models under Community or Enterprise agreements. A model’s listing does not mean Stable Assistant remains available, nor does it establish that a particular use is permitted. Stability AI’s July 2024 license announcement described free covered commercial use below USD $1 million in yearly revenue, but that historical announcement is not a substitute for the current agreement.

Special offer. See more information about Outbyte and uninstall instructions. Please review EULA and Privacy policy.

Before using model weights or integrating an API into a commercial product, read the current license and terms that apply to your model, organization, and use case. Availability, API routing, and commercial permissions are distinct questions.

Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Support on Ko-Fi

Frequently Asked Questions

Is Stable Assistant shutting down?

Stability AI says the application was sunset on October 1, 2026. That date has passed. Its marketing page may still describe features, but the support notice is the relevant source for availability.

Rank #4
ZAICOLER Translation Earbuds, AI Real Time Multilingual Bluetooth Earbuds, Smart Communication Device with Text to Image Generation, Ideal for Study, Work, Travel, Phone Calls & Video (Black)
  • [ProductivityBoostingFeatures] Elevateyourworkefficiencywithcutting-edgesimultaneousinterpretationandmeetingrecordingcapabilities. oursmartearbudspreciselydistinguishbetweenspeakerswhiledeliveringanimpressive98% transcriptionaccuracy. perfect , students, andfrequenttravelerswhoneedreliabledocumentationofimportantconversationsandlectureswithoutmissingasingledetail.
  • [ImmersiveAudioExperience] Enjoypremiumsoundqualitywithadvanceddecodingtechnologyandergonomicwirelessdesign. therotatableearhooksprovideexceptionalcomfortduringextendedusewhilemaintainingsecurefit. whetheryou'relisteningtomusic, takingcalls, orusingtranslationfeatures, thesuperioracousticperformancedeliversrich, balancedaudioacrossallfrequencies.
  • [RealTimeMultilanguageTranslation] Breakdownlanguagebarriersinstantlywithouradvancedtranslationearbuds. experienceseamlessface-to-faceconversationsandcrystal-clearvoicecallswithreal-timetranslationacrossmultiplelanguages. -poweredsystemensuresaccurateinterpretations, makinginternationalcommunicationeffortlesswhetheryou'retraveling, studying, orconductingbusinessmeetings.
  • [Ai-poweredSmartFunctions] Revolutionizeyourcommunicationwithbuilt-inhardwareandartificialintelligence. beyondtranslation, theseinnovativeearbudsoffertext-to-imagegenerationandaimusiccreationcapabilities. theintegratedsmarttechnologytransformsordinaryinteractionsintoextraordinaryexperiences, settinganewstandardforwearabletechinpersonalandprofessionalsettings.
  • [VersatileEverydayCompanion] Designedformodernlifestyles, theseearbudsseamlesslytransitionbetweenmultiplefunctions. usethemasreal-timetranslatorsduringinternationalcalls, asproductivitytoolsforvideoconferences, orsimplyashigh-qualitywirelessearbudsformusic. theintuitiveinterfaceandmultipurposedesignmakethemidealforbusinessprofessionals, languagelearners, andtechenthusiastsalike.

What happens to Stable Assistant subscriptions and refunds?

Stability AI’s notice describes cancellation and refund arrangements for month-to-month and annual subscribers, including estimated processing times. It does not confirm whether any individual refund has been completed; contact Stability AI support about your account.

Can I still use Stable Diffusion 3 through the API?

Stability AI says the SD 3.0 API endpoints were deprecated on April 17, 2025, and calls were rerouted to SD3.5 equivalents at no extra cost. Check the current API reference for the supported endpoint and model options.

Special offer. See more information about Outbyte and uninstall instructions. Please review EULA and Privacy policy.

Does Stable Assistant’s sunset mean SD3 models are discontinued?

No. The app, model family, and API are separate. Stability AI’s May 2026 Core Models page listed SD3 Medium and SD3.5 models, while its API documentation describes the SD3.0-to-SD3.5 routing change.

Can I still access files from my Stable Assistant account?

The researched sunset notice does not specify post-sunset file access or deletion timing. Ask Stability AI support rather than assuming files remain accessible or have been deleted.

Is the old Stable Assistant product page proof that the app is still available?

No. The product page describes the application’s features, but Stability AI’s later support notice says it was sunset on October 1, 2026.

Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.

Free tools Windows power users keep installed

One-click scans. No signup required.

Special offer. See more information about Outbyte and uninstall instructions. Please review EULA and Privacy policy.

More from the Paint Desk

Recommended PC Tool
Recommended PC Tool
PC Slower Than It Used to Be?Free scan - under a minute
Outdated Drivers Are Slowing You DownFree scan - exact matches

Two free Windows tools

One Free Minute Could Fix That PC

Before you go - each of these free tools takes about a minute and tackles what quietly slows a Windows PC down.

Special offer. View Outbyte info, uninstall instructions, EULA, and Privacy Policy.