Best 1273 Assistants Tools in 2026

Text to Speech
Speech to Text
Conversational AI
Dubbing
Voice Cloning
Voice Changer
Voice Isolation
Text to Sound Effects

Free $0 per month 10k credits/month
Starter $5 per month 30k credits/month
Creator $11 per month 100k credits/month
Pro $99 per month 500k credits/month
Scale $330 per month 2M credits/month + 3 seats
Business $1,320 per month 11M credits/month + 5 seats
Enterprise Custom pricing Custom number of credits and seats

Users can generate speech from text, clone voices, dub videos, and create audiobooks using the platform's tools. The platform offers APIs and SDKs for developers to integrate AI audio capabilities into their products. Users can select voices, direct delivery, and publish content.

AI Chatbot
Copywriting templates
Text explanation, translation, and rephrasing
Image, video, and PDF processing tools

Pro US$8.3/month 1500 Advanced Credits
Unlimited US$16.6/month 4500 Advanced Credits
Free US$0 40 accesses to basic models daily

Install the Chrome extension, then use Monica to chat, compose text on web pages, explain selected text, translate, or rephrase.

ChatGPT Sidebar
GPT-4 Support
AI Reader
AI Writer
ChatPDF Integration
Image Tools
Group AI Chat

Install the Sider Chrome/Edge extension to seamlessly integrate AI assistance into your browsing, reading, and writing tasks. Select any text to explain, translate, summarize, or rewrite it using the ChatGPT sidebar.

Step-by-step math problem solving
AI tutoring in multiple subjects
Personalized learning experience
Grade improvement guarantee

Astra AI Plus 40 € / month Monthly Subscription
Matura AI + Astra AI Plus 147 € Special Offer -50%, Limited time discount

Users can snap a photo of a math problem, and Astra AI breaks it down into bite-sized explanations. It also offers assistance in Chemistry, Physics, and German. Users can try the free version or subscribe to Astra AI Plus for more features.

AI-powered chat and question answering
AI writing and content generation
AI document processing and analysis
AI translation
AI image generation and recognition

You can interact with 文心一言 by typing questions or prompts in the chat interface. It can also be used to generate text, translate languages, and analyze documents.

Instant answers to medical questions
Guideline-directed responses with citations
Evaluation of evidence strength
Access to curated guidelines and literature
Research Mode for meta-analysis of published literature

Users can ask any medical question, and Dr.Oracle will provide instant, precise, and in-depth explanations directly from up-to-date guidelines and clinical research, complete with citations. It is available on iPhone/iPad, Apple Vision, Android, and Web Browser.

Grammar Checker
Style Editor
Manuscript Analysis
Virtual Beta Reader
Chapter Critique
Paraphrasing Tool
Rephrase
Sparks
Writing Reports

Free Free Basic writing suggestions, everywhere you write. 500 word count limit, 2 runs per report per day, 10 rephrases per day, 3 Sparks per day.
Premium (Monthly) $30.00 per month Write and edit like an expert. No word limits. Everything in Free, Unlimited word count, Unlimited report runs, Unlimited rephrases, 5 Sparks per day, Advanced style improvements, Custom style guide, Snippets, 25+ writing analysis reports, Customizable suggestions, Terminology management, Author comparison, Citations, Collaboration, Unlimited document storage, 1 Chapter Critique per day, 30% discount on Manuscript Analysis Credits.
Premium Pro (Monthly) $36.00 per month Unlock extended AI features to spark ideas. Everything in Premium, 50 Sparks per day, 3 Chapter Critiques per day, 50% discount on Manuscript Analysis Credits.
Premium (Yearly) $10.00 per month, billed yearly $120 Write and edit like an expert. No word limits. Everything in Free, Unlimited word count, Unlimited report runs, Unlimited rephrases, 5 Sparks per day, Advanced style improvements, Custom style guide, Snippets, 25+ writing analysis reports, Customizable suggestions, Terminology management, Author comparison, Citations, Collaboration, Unlimited document storage, 1 Chapter Critique per day, 30% discount on Manuscript Analysis Credits.
Premium Pro (Yearly) $12.00 per month, billed yearly $144 Unlock extended AI features to spark ideas. Everything in Premium, 50 Sparks per day, 3 Chapter Critiques per day, 50% discount on Manuscript Analysis Credits.
Premium (Lifetime) $399.00 One-time payment Write and edit like an expert. No word limits. Everything in Free, Unlimited word count, Unlimited report runs, Unlimited rephrases, 5 Sparks per day, Advanced style improvements, Custom style guide, Snippets, 25+ writing analysis reports, Customizable suggestions, Terminology management, Author comparison, Citations, Collaboration, Unlimited document storage, 1 Chapter Critique per day, 30% discount on Manuscript Analysis Credits.
Premium Pro (Lifetime) $699.00 One-time payment Unlock extended AI features to spark ideas. Everything in Premium, 50 Sparks per day, 3 Chapter Critiques per day, 50% discount on Manuscript Analysis Credits.

Users can access ProWritingAid through various integrations, including desktop apps, browser extensions, and integrations with popular writing software like Word and Google Docs. Once installed, the tool analyzes the user's writing and provides suggestions for grammar, style, and overall improvement. Users can review these suggestions and apply them to enhance their writing.

AI text humanization
Plagiarism removal
AI detection bypass
SEO-friendly optimization
Multiple language support
Easy-to-use interface

Standard (Yearly) $4/mo 600,000 Words/yr, Works with All Detectors, Access to All Modes, New! Access to Enhanced Model, 100% Original Content, 1000 Words Per Request, 3 Keywords or Phrases Can Be Freezed Per Request. Keyword Freezer (Uses 2x Words Credit), No Ads and Captcha, No Unusual or Random Vocabulary, High-Quality and Readable Content, Basic Customer Support, Truly Undetectable Content, 1 User, Good Grammarly Score
Premium (Yearly) $18/mo Unlimited Words/month, Works with All Detectors, Access to All Modes, New! Access to Enhanced Model, 100% Original Content, 1000 Words Per Request, 6 Keywords or Phrases Can Be Freezed Per Request, No Ads and Captcha, No Unusual or Random Vocabulary, High-Quality and Readable Content, Premium Customer Support, Truly Undetectable Content, 1 User, High Grammarly Score
Elite (Yearly) $24/mo Unlimited Words/month, Works with All Detectors, Access to All Modes, New! Access to Enhanced Model, 100% Original Content, 1500 Words Per Request, 12 Keywords or Phrases Can Be Freezed Per Request, Show Difference Feature, No Ads and Captcha, No Unusual or Random Vocabulary, High-Quality and Readable Content, Premium Customer Support, Truly Undetectable Content, 1 User, Best Grammarly Score
Standard (Monthly) $20/mo 50,000 Words/mo, Works with All Detectors, Access to All Modes, New! Access to Enhanced Model, 100% Original Content, 1000 Words Per Request, 3 Keywords or Phrases Can Be Freezed Per Request. Keyword Freezer (Uses 2x Words Credit), No Ads and Captcha, No Unusual or Random Vocabulary, High-Quality and Readable Content, Basic Customer Support, Truly Undetectable Content, 1 User, Good Grammarly Score
Premium (Monthly) $30/mo Unlimited Words/month, Works with All Detectors, Access to All Modes, New! Access to Enhanced Model, 100% Original Content, 1000 Words Per Request, 6 Keywords or Phrases Can Be Freezed Per Request, No Ads and Captcha, No Unusual or Random Vocabulary, High-Quality and Readable Content, Premium Customer Support, Truly Undetectable Content, 1 User, High Grammarly Score
Elite (Monthly) $40/mo Unlimited Words/month, Works with All Detectors, Access to All Modes, New! Access to Enhanced Model, 100% Original Content, 1500 Words Per Request, 12 Keywords or Phrases Can Be Freezed Per Request, Show Difference Feature, No Ads and Captcha, No Unusual or Random Vocabulary, High-Quality and Readable Content, Premium Customer Support, Truly Undetectable Content, 1 User, Best Grammarly Score

To use Humanize AI, visit the website, paste the AI-generated text into the input area, complete the captcha, and click the 'Humanize AI' button. Review the output, make edits if needed, and copy the humanized text.

Multilingual support
API-native with configurations and integrations
Automated testing
Bring your own models
Tool calling
A/B experiments

Choose a workflow from pre-made templates or build your own. Plug it into your telephony, website, or app. Handle millions of calls and monitor their performance.

High Quality AI Prompt Library
Private Prompts for You and Your Team
Custom GPT Community Prompts
AIPRM Everywhere
AIPRM Omnibox
AIPRM Teams
AIPRM Verified Prompts
Craft Tailored Prompts for Leading Generative AI Tools
Live Crawling
Model Tagging and Filtering
Power Continue
Prompt Forking
Prompt Lists for You and Your Team
Prompt Variables
Your Style and Tone for Your Brand

AIPRM Plus US$20 per month Enjoy more productivity features with the Plus plan. Includes Community Prompts, Favorites List (8 items), 10 Private Prompt Templates, Power Continue, Tone & Writing Style, Hide 8 Prompt Templates, 1 Custom List (8 items).
AIPRM Pro US$39 per month The plan for the professionals that understand the enormous benefits and time-savings that AIPRM brings and are ready to take it to the next level. Includes AIPRM Verified Prompts, Favorites List (16 items), 40 Private Prompt Templates, 3 Custom Power Continue, 3 Custom Tones & Styles, Hide 16 Prompt Templates, 3 Custom Lists (16 items each), 2 Public Prompts Upcoming, 4 Custom Profiles, AIPRM for Claude.
AIPRM Elite One US$79 per month The plan for advanced professionals that need more than the Pro plan, with 1 user license. Includes AIPRM Verified Prompts, Favorites List (24 items), 80 Private Prompt Templates, 6 Custom Power Continue, 6 Custom Tones & Styles, Hide 24 Prompt Templates, 6 Custom Lists (24 items each), 3 Public Prompts Upcoming, View Prompt Source, Fork Public Prompt to Private, Live Crawling of URLs, 8 Custom Profiles, 5 Co-Authors, Team Admin, Hide Watermark.
AIPRM Titan US$999 per month Become an AIPRM Titan. A supporter of AIPRM and member of an exclusive and small circle. Enjoy ease of mind with huge limits and more access to the team of AIPRM. Includes 20x the Limits of AIPRM Pro, 4 Public Prompts Upcoming, Exclusive AIPRM Titan Group Membership, All features and benefits first, Custom Upgrades possible, NEW: 5 Team Admins.

Install the AIPRM browser extension for ChatGPT or Claude. Browse the library of curated prompt templates or create your own. Select a prompt and input any required information to generate high-quality AI outputs.