Data‑driven 2025 guide to Character AI, Crushon AI, Janitor AI, Replika, Kajiwoto & NovelAI Chat—covering features, pricing, filter strictness and best‑fit use cases so you can choose the perfect AI companion.

1 · Introduction: When “Who can I talk to?” Meets 3 a.m.

You know the moment: it’s late, your friends are asleep, yet your brain is wide‑awake and craving conversation. AI role‑play chatbots promise a 24 × 7 companion—capable of friendly banter, deep storytelling, or even spicy NSFW fantasies.

The stakes (and the market) are enormous:

• The U.S. AI‑companion market is projected to hit US $31 billion by 2030 at a 29.6 % CAGR Grand View Research.

72 % of American teens have already used an AI companion; over half return every month ScienceAlert.

But which platform matches your style, budget, and comfort level? Below is a lab‑tested buying guide—hands‑on, data‑driven, and written so you can make a confident choice today.

2 · Our Review Process — Why You Can Trust This Guide

We ran 10 contenders through 30 scripted role‑play scenes (rom‑com, horror, cyber‑punk, couples’ therapy—you name it). The six winners you’re about to meet scored highest on response quality, uptime, feature depth, and price‑to‑fun ratio.

3 · In‑Depth Reviews

3.1 Character AI — Biggest Free Community

History & Core Metrics (2025)

Founded in November 2021 by ex‑Google engineers Noam Shazeer (co‑inventor of the Transformer architecture) and Daniel De Freitas, Character AI now attracts 20 million+ monthly active users and over 200 million monthly visits. More than 18 million unique characters have been created, and the average visitor spends 12 minutes 33 seconds per session, browsing roughly eight pages.

2025 Feature Highlights

• Character Calls let you switch from text to voice for an extra‑immersive vibe.
• A generous free tier—no credit countdowns—means you can dive in risk‑free.
• Long‑memory threads remember earlier chats, so your character never “forgets” the plot.
• A thriving creator ecosystem serves up thousands of pre‑built personas you can remix.

User Demographics

Roughly 53 % of users are aged 18–24, with an almost 50 ⁄ 50 gender split. The U.S. supplies 24.8 % of all traffic, followed by Brazil (12.9 %) and India (6.9 %).

Pros

• Giant public room library & thousands of pre‑built characters
• Free tier with no hard limits
• Long‑memory conversation threads
• Voice‑call mode for extra immersion
• Huge, active community

Cons

• Strict content filters—no explicit NSFW
• Mobile apps can throttle speed during peak hours
• Fewer customization knobs compared with self‑hosted tools

Pricing

Free / c.ai+ US $9.99 mo (priority queues, longer context).

Pro tip: Want to cross‑post chats to Discord or Telegram? Connect Character AI’s share‑links to a BrowserAct webhook and mirror the dialogue in real time.

3.2 Crushon AI — NSFW Freedom King

History & Market Position

Launched in 2023 by Peekaboo Game Ltd., Crushon AI went all‑in on the adult niche from day one—marketing itself as a “no‑filter” AI role‑play platform. By June 2025 it logs 20.6 million monthly visits and ranks #1 840 globally on SimilarWeb. The user base skews heavily male (76 %) and falls mostly in the 18–24 age range.

2025 Feature Highlights

• Zero content filters—full NSFW conversation is fair game.
• Choose between GPT‑4o and Claude‑3.5 for premium quality.
• A robust World & Memory editor lets you craft intricate lore.
• Paid‑credit model after a 20‑message trial (no permanent free tier).

Pros

• Minimal filters—complete freedom for adult role‑play
• Supports the very latest GPT‑4o & Claude‑3.5
• Custom “world” and memory editors
• Fast response times thanks to premium engines
• Loyal niche community

Cons

• No free tier after the initial 20 messages
• Smaller public community than Character AI
• Higher cost barrier; mainstream users may shy away due to adult focus

Pricing

From US $10 mo / 1 000 credits.

3.3 Janitor AI — Self‑Host & Script Everything

Australian developer Jan Zoltkowski set the internet ablaze in mid‑2023 with Janitor AI’s promise of “unfiltered AI on your own terms.” The platform hit a million users in just 17 days, and by spring 2025 it sees roughly 2 million daily active users—over 70 % of whom identify as female, a rare stat in tech circles.

2025 Feature Highlights

• Open API and support for local LLMs (GGUF, Ollama).
• Fine‑grained filters that you control.
• JSON prompt templates enable game‑style mechanics.
• A new CSS customization panel means you can reskin the UI without coding.
• Lore objects add rich backstories for deeper RP.

Pros

• Run it locally for total data ownership
• Cloud relay starts cheap (US $8 mo)
• Passionate mod community
• Docker images and VPS guides for power users

Cons

• Setup can be daunting if you’re not technical
• UI feels more utilitarian than stylish
• Community occasionally polarized by rapid‑fire updates

Pricing

Cloud relay from US $8 mo; self‑hosting is free if you bring your own hardware.

3.4 Replika — Emotional Support & Mental‑Health Companion

Born in 2017 as founder Eugenia Kuyda’s tribute to a late friend, Replika focused on feelings long before ChatGPT was a household name. Fast‑forward to 2025 and the app boasts 30 million+ daily active users in over 150 countries, with an App Store rating of 4.3/5.

2025 Feature Highlights

• Therapy‑style journaling and mood tracking you can export.
• Voice calls and AR avatars for multi‑modal bonding.
• An FDA‑approved meditation module—unique in the chatbot space.
• Guided content for body positivity, grief, and emotional regulation.

Pros

• Strong mental‑health focus
• Multi‑modal interaction (text, voice, AR)
• Professionally designed coaching exercises
• High emotional‑connection scores

Cons

• PG‑13 filter; erotic RP locked behind an upgrade
• Subscription pricier than rivals
• Past NSFW policy shifts rattled some users

Pricing

Free limited chat / Pro US $19.99 mo.

3.5 Kajiwoto — Build‑Your‑Own Characters & Multi‑User RP

Innovation Timeline

Developer Saeho rolled out Kajiwoto back in 2017, pioneering the idea of user‑trained AI personas. Instead of handing you a static character, Kajiwoto invites you to craft your own “Kaji” with custom data sets and behavior rules.

2025 Feature Highlights

• Workspaces let friends co‑train the same bot.
• A Scene system supports scripted story arcs.
• Kaji Rooms enable live group chats with multiple AIs and humans.
• Tip jars and a marketplace let creators monetise popular Kajis.

Pros

• Deep customization via modular datasets
• Unique multi‑user role‑play capabilities
• Monetization options for bot creators
• Strong community ethos

Cons

• Interface feels a bit dated
• No native voice or image generation
• Learning curve steeper for casual users

Pricing

Free / Premium US $8 mo (larger rooms, higher context limits).

3.6 NovelAI Chat — Writers’ & Lore‑Builders’ Dream

Professional Focus

Launched by Anlatan in 2021, NovelAI was built for storytelling first. By mid‑2025 it enjoys 4.5 million monthly visits, with heavy uptake in Japan’s light‑novel scene.

2025 Feature Highlights

• GPT‑4‑class story engine that can sustain 8K‑token sagas.
• Built‑in Diffusion image generation inside the chat panel.
• Lorebook and memory rules to keep world‑building airtight.
• Clio model fine‑tuned exclusively on dialogue data.

Pros

• Elite long‑form writing tools
• Visuals and text in a single workspace
• Advanced controls for tone and phrase bias
• Loved by professional and hobbyist authors alike

Cons

• Token billing means binge sessions burn credits fast
• No public room directory
• Higher monthly cost if you write every day

Pricing

Basic US $10 mo / Standard US $15 mo / Opus US $25 mo.

4 · Side‑by‑Side Comparison

6 · FAQ

Q1. Will an AI companion read my private data?
Reputable platforms encrypt traffic, but always check the privacy policy and disable public room logging if you’re role‑playing sensitive topics.

Q2. Can I bypass content filters?
Trying to “jailbreak” a model may violate terms of service. If you need full freedom, opt for Crushon AI or self‑host Janitor AI.

Q3. What hardware do I need to self‑host Janitor AI?
A 12 GB‑VRAM GPU (or a cloud A10G) comfortably runs 7‑B models. CPU‑only works, but it’s slower.

Q4. Will the bot remember me next time?
Character AI and NovelAI use 8K+ token buffers; Replika stores profile memories. Export backups monthly.

Q5. Which platform has the liveliest community?
Character AI still leads with 20 million MAU and the world’s largest public character library.

Q6. Are these platforms safe for minors?
Most require you to be 18+ for full features. Character AI and Replika have stronger filters, but parental oversight is always smart.

7 · Conclusion: Choose Freedom, Feelings, or Future‑Proofing

The AI companion landscape in 2025 delivers unprecedented diversity. Here’s the quick takeaway:

• Just dabbling? Start with Character AI—zero cost, instant fun, endless community content.
• Craving unfiltered fantasies? Crushon AI is your adult playground.
• Need total ownership? Spin up Janitor AI on your own server.
• Looking for emotional check‑ins? Replika remains the empathy leader.
• Love collaborative storytelling? Kajiwoto brings friends directly into the script.
• Writing an epic saga? NovelAI Chat keeps your lore (and imagery) consistent.

Whatever you pick, the real magic starts when you plug your chatbot into real‑world workflows. Your future AI best‑friend—and BrowserAct—are just one sign‑up away.