
Enterprise developer platform and API for deploying GPT-6 Astra, Sol, Luna, and realtime multimodal agents.
Enterprise developer platform and API for deploying GPT-6 Astra, Sol, Luna, and realtime multimodal agents.
Character.AI records 154,156,370 monthly visits with +2.2% month-over-month growth and Freemium pricing. OnAPI records 0 monthly visits with 0% growth and Paid pricing.

One AI API key for text, image, video, and code models
| Dimension / Metric | ![]() | |
|---|---|---|
| Official Domain | character.ai | onapi.ai |
| Pricing Model | Freemium | Paid |
| Monthly Visits | 154.16M (154,156,370) | 0 (0) |
| MoM Traffic Delta | +3.28M (+2.2%) | 0 (0%) |
| Primary Market & Share | 🇺🇸 United States (29.6%) | 🌐 Global (—) |
| Direct Visits / mo | 110.73M | 0 |
| User Rating | 4.4 | 4.2 |
| 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.

One AI API key for text, image, video, and code models
Call many different models through one base URL and one API key, so existing OpenAI-style clients and SDKs usually need only minor changes.
Access text and reasoning models alongside image, video, and audio/music generation endpoints from the same integration.
Route routine traffic through a value tier to reduce spend, and move critical workloads to an official tier when stability matters more than cost.
Manage credentials and usage in one place instead of juggling separate accounts, quotas, and invoices across vendors.

Enterprise developer platform and API for deploying GPT-6 Astra, Sol, Luna, and realtime multimodal agents.
Enterprise developer platform and API for deploying GPT-6 Astra, Sol, Luna, and realtime multimodal agents.
Features community-driven roleplay with flexible LLM routing and adult content support, unlike Character.AI's strict filtering.
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.
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.
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.
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.
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.
Provides completely unfiltered anime and fantasy character chats, bypassing Character.AI's rigid safety restrictions.
Free / Open-sourceOne API key for hundreds of AI models from every major provider
Free / Open-sourceOne API key for hundreds of AI models from every major provider

Combines character chat with persistent memory and visual companions, competing directly in casual roleplay.
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.
SpecialistExcels at long-form fiction writing and collaborative storytelling rather than structured character chat rooms.

One API for 1,500+ production-ready generative media models

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