Comparison

CAI Chat AI vs Hephaistos

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

CAI Chat AI

This AI chatbot offers a versatile platform for chatting, writing, voice conversations, smart search, and image generation. It allows users to compare answers from multiple AI models within a single conversation and provides tools for content creation, homework help, and even calorie tracking.

Highlights
  • AI Chatbot and AI Writer
  • Voice Chat with natural responses
  • AI Smart Search with real-time web data
  • Image generation from prompts
  • Document scanning and text extraction
  • AI Calorie and Meal Tracker
  • Role-based AI assistants
Features
Read full description

【 CAI Chat AI: Poly AI Assistant 】 CAI is an all in one AI chatbot built for chatting, writing, voice conversations, smart search, and image tools. If you are looking for a chatbot, an AI chatbot, a chat bot, ChatAI, or a chat ai app that lets you compare answers fast, CAI is designed for you. 【 Poly AI Power, Multiple Models in One Chat 】 Ask a question, get an answer, then switch the model in the same conversation and compare instantly. Keep context in one place and continue without starting over. CAI helps you get better answers, write faster, and stay productive. 【 Key Features 】 AI Chatbot and AI Writer Write emails, essays, captions, stories, scripts, and blog posts Rewrite, improve grammar, summarize, translate, and change tone Homework help and study support with a student assistant style experience Voice Chat Talk to AI and get natural responses for practice, brainstorming, and quick tasks AI Smart Search Real time web search for up to date answers, summaries, and explanations Image and Document Tools Create images from prompts Scan documents, extract text from photos, and get help from what you see AI Characters and Role Based Assistants Choose a role such as content creator, learning assistant, event planner, interviewer, or coach and get focused help 【 New: AI Calorie and Meal Tracker 】 Scan meals and get instant calorie estimates plus macro insights powered by AI. Use it to support your diet goals and track meals quickly. 【 What You Can Do With CAI 】 Create better writing in seconds Generate ideas and outlines for work, school, and content creation Translate and improve language skills Plan trips, schedules, and projects Get quick explanations for any topic Compare responses across models to find the best answer Chat privately in a clean interface designed for speed 【 Why People Choose CAI 】 One app for chat, writing, voice, search, and image tools Fast model switching inside the same chat A practical AI assistant you can use every day Download CAI Chat AI and experience a modern AI chatbot with Poly AI power. Privacy Policy: https://speakmateai.com/PrivacyPolicy.html Terms of Services: https://speakmateai.com/TermsofServices.html

About

Hephaistos

Features
Read full description

Votre IA personnelle, partout. Hephaistos réunit dans une seule app vos conversations avec Jarvis, vos recherches, vos documents et vos automatisations. Posez une question, reprenez une idée plus tard et gardez le contexte utile à portée de main. UNE IA QUI VOUS ACCOMPAGNE - Conversations fluides avec réponses en temps réel - Mémoire personnelle et préférences - Recherche web avec sources vérifiables - Questions sur vos PDF, DOCX, notes et fichiers - Voix, pièces jointes, favoris et export - Agents et automatisations pour les tâches répétitives DEUX FAÇONS DE L'UTILISER Choisissez Hephaistos Cloud pour démarrer sans gérer de machine, ou connectez votre propre serveur compatible pour garder la maîtrise de l'inférence. Le téléchargement de l'app est gratuit. Hephaistos Cloud est un abonnement optionnel dont le prix et la durée sont affichés avant l'achat. CLAIR SUR VOS DONNÉES Hephaistos ne vend pas vos données et ne vous suit pas entre les apps ou les sites. Chaque mode indique où les requêtes sont traitées. Les contrôles d'export, de réinitialisation et de suppression restent accessibles dans l'app. ET AUSSI - Agora communautaire avec signalement et modération - Messages directs chiffrés de bout en bout côté client - Connexion sur plusieurs appareils - État du service et diagnostics lisibles POUR COMMENCER 1. Téléchargez gratuitement Hephaistos. 2. Choisissez Hephaistos Cloud ou votre serveur personnel. 3. Ouvrez Jarvis et commencez. CONDITIONS ET CONFIDENTIALITÉ Conditions d'utilisation (EULA Apple standard) : https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Politique de confidentialité : https://gethephaistos.com/privacy

Screenshots

CAI Chat AI4 screens
Hephaistos4 screens

Verdict

The call

The clearest difference is ads: Hephaistos at none against CAI Chat AI's shown. Hephaistos also leads on update cadence (every 2 days vs every 4 weeks). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. CAI Chat AI sells 9 in-app purchases, starting at $4.99 per 7 days and Hephaistos sells 6 in-app purchases, starting at $8.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

CAI Chat AI ships an update every 4 weeks, Hephaistos every 2 days. The most recent releases landed on October 20, 2026 and October 28, 2026 respectively.

Scorecard2 real differences · 8 level
CAI Chat AI versus Hephaistos: the parameters behind the verdict, then further details
ParameterCAI Chat AIHephaistos
PriceFreeFree
Rating4.4 (121 ratings) — better—
Positive reviews92.4% of reviews—
Number of ratings121 — better—
Update frequencyEvery 4 weeksEvery 2 days — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhoneiPhone, iPad — better
Requires iOS16.016.0
Further details — not scored
Size84 MB39 MB
Age rating12+4+
DeveloperJon HuiLogan Ablaoui

Bugs and requests

CAI Chat AI

Reported bugs

2 issues
  • Demo version not working/limited questions
  • Hidden limits on AI conversations

Requested features

2 requests
  • More music-related prompts
  • Support for more languages

Hephaistos

Not enough reviews yet to summarise bugs or requests.

In-app purchases

9 purchases

CAI Chat AI

Subscriptions9
  • Weekly Pro Subscription3 Days trial$4.997 Days
  • Weekly Subscription3 Days trial$6.997 Days
  • Monthly Pro Subscription$6.991 Month
Show 6 more
  • Monthly Subscription$9.991 Month
  • Weekly Premium Subscription3 Days trial$14.997 Days
  • Monthly Subscription (Secret)1 Month trial$19.991 Month
  • Monthly Premium Subscription$19.991 Month
  • Annual Subscription$39.991 Year
  • Annual Premium Subscription3 Days trial$59.991 Year
6 purchases

Hephaistos

Subscriptions6
  • Spark (monthly)$8.991 Month
  • Flame (monthly)$24.991 Month
  • Titan (monthly)$44.991 Month
Show 3 more
  • Spark (yearly)$89.991 Year
  • Flame (yearly)$249.001 Year
  • Titan (yearly)$399.001 Year

Questions

Is CAI Chat AI free?
CAI Chat AI is free to download, with in-app purchases available.
Is Hephaistos free?
Hephaistos is free to download, with in-app purchases available.
Do CAI Chat AI or Hephaistos have ads?
CAI Chat AI shows ads; Hephaistos does not.
Which is updated more often, CAI Chat AI or Hephaistos?
CAI Chat AI ships an update every 4 weeks, and Hephaistos every 2 days. Most recently, CAI Chat AI was updated on October 20, 2026 and Hephaistos on October 28, 2026.

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