Features community-driven roleplay with flexible LLM routing and adult content support, unlike Character.AI's strict filtering.
Character.AI records 154,156,370 monthly visits with +2.2% month-over-month growth and Freemium pricing. Side Reader records 355 monthly visits with -36.5% growth and Freemium pricing.
Read and chat with PDFs right beside ChatGPT, Claude and DeepSeek.
| Dimension / Metric | ||
|---|---|---|
| Official Domain | character.ai | side-reader.com |
| Pricing Model | Freemium | Freemium |
| Monthly Visits | 154.16M (154,156,370) | 355 (355) |
| MoM Traffic Delta | +3.28M (+2.2%) |
| -204 (-36.5%) |
| Primary Market & Share | 🇺🇸 United States (29.6%) | 🇻🇳 Vietnam (100%) |
|---|
| Direct Visits / mo | 110.73M | 149 |
|---|
| User Rating | 4.4 | 2.4 |
|---|
| Supported Platforms | Website | Website |
|---|
Chat with millions of AI characters or build your own
Browse and chat with a vast library of community and official characters across genres and fandoms.
Design a character's look, backstory, personality and voice, then share it with the community.
Talk with characters using voice chats and Voice Notes, not just typed messages.
Long-form, in-character conversations built for storytelling and immersion rather than quick answers.
Read and chat with PDFs right beside ChatGPT, Claude and DeepSeek.
PDFs render directly in the sidebar next to the chat, so your document and the AI conversation are visible at the same time.
Summarize a whole document, translate it, or have passages explained in simpler terms using the AI you are already signed into.
Built-in buttons cover the common actions, and you can edit their prompts to make the AI respond in the format and tone you need.
Ask about charts, scans or regions that cannot be selected by taking a screenshot question instead.
Features community-driven roleplay with flexible LLM routing and adult content support, unlike Character.AI's strict filtering.

Offers unfiltered and NSFW character roleplay with multi-model switching, whereas Character.AI strictly enforces safety filters.
#2
SpecialistSpecializes in virtual romantic companions with voice and photo generation, catering more to dating roleplay.

Features millions of user-generated personas with voice playback, offering a similar casual roleplay experience to Character.AI.
Focuses on immersive storytelling and fictional character chats, providing an alternative community roleplay environment.
Provides completely unfiltered anime and fantasy character chats, bypassing Character.AI's rigid safety restrictions.

Combines character chat with persistent memory and visual companions, competing directly in casual roleplay.

SpecialistExcels at long-form fiction writing and collaborative storytelling rather than structured character chat rooms.

AI research platform for reading, understanding and writing scientific papers

SpecialistDelivers deeper personal companion dynamics with advanced memory and realistic selfie generation, but fewer public characters.

A free, AI-powered PDF editor for every device
AI sidebar and browser agent for reading, writing and research
Features community-driven roleplay with flexible LLM routing and adult content support, unlike Character.AI's strict filtering.
Offers unfiltered and NSFW character roleplay with multi-model switching, whereas Character.AI strictly enforces safety filters.
SpecialistSpecializes in virtual romantic companions with voice and photo generation, catering more to dating roleplay.
Features millions of user-generated personas with voice playback, offering a similar casual roleplay experience to Character.AI.
Focuses on immersive storytelling and fictional character chats, providing an alternative community roleplay environment.
Provides completely unfiltered anime and fantasy character chats, bypassing Character.AI's rigid safety restrictions.
Combines character chat with persistent memory and visual companions, competing directly in casual roleplay.
SpecialistExcels at long-form fiction writing and collaborative storytelling rather than structured character chat rooms.
AI research platform for reading, understanding and writing scientific papers
SpecialistDelivers deeper personal companion dynamics with advanced memory and realistic selfie generation, but fewer public characters.
AI sidebar and browser agent for reading, writing and research