BYOA Guide

Frequently Asked Questions

Everything you need to know to use FanChat with your own API key.

LLM Providers (Text)

Choose a provider to power your characters. Configure your key in the settings.

OpenAI

OpenAI

Vision

Maker of GPT-4o and GPT-5. The market leader with the most versatile models.

Models
gpt-5.5gpt-5.4gpt-5.4-minigpt-5.4-nanogpt-5gpt-4.1gpt-4.1-minigpt-4ogpt-4o-minio3o4-mini
Get your key

Create an account on OpenAI Platform, go to API Keys, click "Create new secret key".

Console Pricing
Anthropic

Anthropic

Vision

Maker of Claude. Excellent for reasoning, code, and long conversations.

Models
claude-opus-4-7claude-opus-4-6claude-sonnet-4-6claude-sonnet-4-5claude-haiku-4-5-20251001claude-3-5-sonnet-20241022claude-3-5-haiku-20241022
Get your key

Sign in to the Anthropic Console, go to Account > API Keys.

Console Pricing
Google Gemini

Google Gemini

Vision

Google's Gemini family. Generous free tier, excellent quality/price ratio.

Models
gemini-3.1-pro-previewgemini-3.1-flash-lite-previewgemini-3-pro-previewgemini-3-flash-previewgemini-2.5-progemini-2.5-flashgemini-2.5-flash-litegemini-2.0-flash
Get your key

Go to Google AI Studio, click "Get API Key". A Google account is enough.

Console Pricing
Mistral

Mistral

Vision

Cutting-edge French AI. Fast, efficient models, excellent for French.

Models
mistral-large-2512mistral-small-2603mistral-large-latestmistral-small-latestmistral-medium-2508magistral-medium-latestmagistral-smallpixtral-large-latestcodestral-latest
Get your key

Mistral Console > API Keys > "New API Key". Very competitive pricing.

Console Pricing
Groq

Groq

Ultra-fast LPU inference. Ideal for instant responses with open-source models.

Models
llama-3.3-70b-versatilemeta-llama/llama-4-maverick-17b-128e-instructmeta-llama/llama-4-scout-17b-16e-instructqwen/qwen3-32bdeepseek-r1-distill-llama-70bopenai/gpt-oss-120bopenai/gpt-oss-20bmoonshotai/kimi-k2-instruct-0905llama-3.1-8b-instant
Get your key

Groq Console > API Keys > "Create API Key". Free tier available.

Console Pricing
DeepSeek

DeepSeek

High-performance Chinese models at very low prices. DeepSeek-R1 excels at reasoning.

Models
deepseek-v4-prodeepseek-v4-flashdeepseek-chatdeepseek-reasoner
Get your key

Create an account on DeepSeek Platform, go to API Keys.

Console Pricing
Local (Gemma 4)

Local (Gemma 4)

Free

Local model running in your browser via WebGPU. No data sent to a server.

Models
gemma-4-e2b-it
Get your key

No API key required. Initial model download (~1.2 GB), runs 100% offline.

Console

Image Providers

To generate character images and in chat. Optional.

GPT Image (OpenAI)

GPT Image (OpenAI)

Image generation by OpenAI. gpt-image-2 with multi-reference and transparency support.

Models
gpt-image-2gpt-image-1
Get your key

Same API key as for OpenAI text models.

Console Pricing
Gemini Image (Google)

Gemini Image (Google)

Image generation by Google Gemini. Supports reference images and visual search.

Models
gemini-3.1-flash-image-previewgemini-2.5-flash-imagegemini-2.0-flash-preview-image-generation
Get your key

Same API key as for Google text models.

Console Pricing
Replicate

Replicate

Platform for open-source models. Flux Pro, SDXL, and hundreds of others.

Models
black-forest-labs/flux-1.1-problack-forest-labs/flux-schnellstability-ai/sdxl
Get your key

Replicate > Account > API Tokens. Pay-as-you-go.

Console Pricing
Stability AI

Stability AI

Maker of Stable Diffusion. SD3.5 models for high-quality image generation.

Models
sd3.5-largesd3.5-large-turbosd3.5-mediumstable-image-core
Get your key

Stability Platform > Account > API Keys.

Console Pricing
FAL

FAL

Fast infrastructure for Flux and other image-generation models.

Models
fal-ai/flux-pro/v1.1fal-ai/flux/schnellfal-ai/flux-realism
Get your key

FAL Dashboard > API Keys. Free tier to get started.

Console Pricing

FAQ

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