Nexi

An AI co-host that talks to your chat, your mic and your donors

Intermediate
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Screenshot of Nexi, An AI co-host that talks to your chat, your mic and your donors

What is Nexi?

Nexi is a StreamElements overlay widget that gives Twitch and YouTube streams a talking AI co-host. It answers chat, reacts to bits and donations, and responds to your microphone, using ElevenLabs or StreamElements voices. A one-time purchase, but you supply your own paid OpenAI API key.

Nexi is a StreamElements widget that drops a talking AI character into a Twitch or YouTube broadcast. The premise is simple: instead of a static alert box or a pre-recorded soundbite, the streamer gets a persistent co-host that answers chat messages, reacts to bits and donations, and replies when the streamer speaks into the microphone. It runs as a browser-source widget inside StreamElements, so it layers into OBS or any other streaming application without extra software. The build is aimed at creators who want an on-stream personality without hiring a VTuber or writing canned responses. Each AI character has an editable personality, and the product page lists context-aware replies and creative response tuning as the levers for keeping answers in character. Voice output comes from either 206 free StreamElements voices or 20 premium ElevenLabs voices, with multiple languages available. Streamers can pick one of six premade character images, upload their own, and adjust animation settings. In practice the widget listens on three fronts: typed chat, the streamer's microphone, and donation events. Custom commands can trigger AI or text-to-speech replies, with permissions and cooldowns to stop spam. TTS can be toggled off entirely if the stream needs silence during focused gameplay. The practical catch is that Nexi is a front end only: it requires a paid OpenAI API key, and the purchase price does not cover inference costs, so usage bills land on the streamer's own account. The obvious comparison is a generic text-to-speech alert tool or a hand-built chatbot wired into chat. Nexi bundles chat, voice and donation reactions into one overlay at a low one-time price, which suits small and mid-sized channels more than large productions that already run custom bots. Setup is documented in a written guide and a long video tutorial, which matters because the OpenAI key and StreamElements configuration are the parts most likely to trip up newcomers.

How do you use Nexi?

  1. 1Read the setup guide before buying
    The vendor asks buyers to read the written guide first, because the widget needs a paid OpenAI API account and unplanned costs are possible. Confirm you are comfortable with that before checkout.
  2. 2Buy and download the widget
    Purchase the Nexi AI Streamer Widget and collect the StreamElements widget files for Twitch or YouTube plus the setup guide. Delivery is instant after payment.
  3. 3Create an OpenAI API key
    Set up billing on an OpenAI API account and generate a key. This key is what powers the AI replies inside the widget and is billed separately from the purchase.
  4. 4Add the widget in StreamElements
    In StreamElements, create an overlay and add the Nexi widget as a new custom widget, pasting in the widget code and your API key. Match the instructions in the help article for your platform.
  5. 5Configure personality, voice and commands
    Edit the AI personality, pick an ElevenLabs or StreamElements voice, choose or upload a character image, then set command permissions and cooldowns so chat cannot spam the AI.
  6. 6Add the overlay to your streaming software
    Copy the overlay URL from StreamElements into a browser source in OBS or your chosen encoder, size it to the scene, and test microphone and chat reactions before going live.

Pros and cons

Pros

  • Reacts to chat, bits, donations and microphone input in one widgetAI
  • Choice of 20 ElevenLabs voices or 206 free StreamElements voices across languagesAI
  • Personality and response tuning are editable, so the character stays on brandAI
  • Six premade character images plus custom upload and animation settingsAI
  • Runs through StreamElements and works with any streaming software, including OBSAI

Cons

  • Requires a paid OpenAI API account, so the real cost is higher than the sticker priceAI
  • Sold as a digital download with a stated no refund policyAI
  • Setup involves API keys and StreamElements configuration, and reviews call it fairly complicatedAI
  • No free trial, so the widget cannot be tested before payingAI
  • Voice quality hinges on third-party services that can change or raise pricesAI

How much does Nexi cost?

Pricing

The Nexi AI Streamer Widget sells for a one-time $16 on the KUDOS.TV store, with instant download after purchase. Running it also requires a paid OpenAI API account billed separately by OpenAI, and the product page warns buyers to read the setup guide first. Digital purchases are listed as non-refundable.

Learn more

Support

A written setup guide and a video tutorial (about 20 minutes) cover installation. Further help is available through the help centre and a site contact beacon, and the product page carries customer reviews.

Learn more

Integrations

Built for Twitch and YouTube and delivered as a StreamElements widget, so it works with any streaming software, including OBS Studio. AI replies run on your own OpenAI API key, and premium voices come from ElevenLabs.

Features

Editable AI personality with context-aware responses and creative response tuning. Microphone interaction mode, chat replies and a donation reaction system. 206 free StreamElements voices or 20 premium ElevenLabs voices in multiple languages, with TTS toggled on or off. Six premade character images, custom image upload and animation settings. Custom AI and TTS commands with permissions and cooldowns.

Frequently asked questions about Nexi

  • How much does Nexi cost?
    The Nexi AI Streamer Widget sells for a one-time $16 on the KUDOS.TV store, with instant download after purchase. Running it also requires a paid OpenAI API account billed separately by OpenAI, and the product page warns buyers to read the setup guide first. Digital purchases are listed as non-refundable.
  • How do you use Nexi?
    The walkthrough on this page covers 6 steps: 1. Read the setup guide before buying 2. Buy and download the widget 3. Create an OpenAI API key 4. Add the widget in StreamElements 5. Configure personality, voice and commands 6. Add the overlay to your streaming software.
  • What platforms does Nexi support?
    Nexi is available on Web App, Windows and MacOS.
  • What does Nexi integrate with?
    Built for Twitch and YouTube and delivered as a StreamElements widget, so it works with any streaming software, including OBS Studio. AI replies run on your own OpenAI API key, and premium voices come from ElevenLabs.
  • What are the limitations of Nexi?
    Requires a paid OpenAI API account, so the real cost is higher than the sticker price. Sold as a digital download with a stated no refund policy. Setup involves API keys and StreamElements configuration, and reviews call it fairly complicated.

Status

StatusActive
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Added10/21/2026

Platforms

Web AppWindowsMacOS

Pricing

Paid

Categories

AI Chat BotCompanionTwitch Chat BotVoiceVoice GenerationChatFunText-To-Speech