AI Models

By default, the platform selects an AI model for each request based on what the request needs and the user's credit balance. Every plan can use every model — more capable models cost more credits. Most apps do not need to configure models manually.

Default Selection

When an app makes an AI request without specifying a model, the platform chooses an appropriate available model. The selected model depends on the request type, required capabilities, and efficient defaults for the user's plan.

All users can access every model if they have enough credits. Plans differ mainly in monthly credit allowance, concurrency, and default model selection — not hard model locks.

Model Tiers

Models are grouped into three tiers:

Tier	Best for	Credit cost
Lite	Fast, lower-cost tasks such as formatting, classification, and quick summaries	Lowest per request
Standard	Balanced quality and cost for most everyday tasks	Moderate per request
Advanced	Complex reasoning, higher-quality writing, and demanding tasks	Highest per request

Fallback Behavior

Automatic model selection includes graceful fallback. If the first model cannot handle a requested capability, such as a specific attachment type or web search, the platform can try another available model so the request still succeeds when possible.

Fallback only applies when the platform is choosing the model. If an app pins a specific model, the platform uses that model and returns an error if it cannot satisfy the request.

Model Types

The platform supports models for text, images, video, and speech. For developer-facing details, see the AI text, AI image, AI video, and AI speech references.

To customize model behavior in an app, see Model Selection.

Available Models

Here are all the models currently available on the platform, grouped by modality. Use the Model ID value when exposing a model selector or pinning a specific model.

Text Models

Used by useAIChat, useAIText, and useAIObject for conversations, text generation, and structured data extraction.

Model	Model ID	Provider	Tier	Description
Gemini 3.1 Flash Lite	gemini-3.1-flash-lite	Google	Lite	Google's most efficient model. Ultra-fast and cost-effective.
GPT-5.4 Nano	gpt-5.4-nano	OpenAI	Lite	OpenAI's fastest and most affordable GPT-5.4 variant for lightweight tasks.
Gemini 3 Flash	gemini-3-flash-preview	Google	Standard	Google's most balanced model. Quick, accurate, affordable.
GPT-5.4 Mini	gpt-5.4-mini	OpenAI	Standard	A faster, more cost-efficient version of GPT-5.4 for well-defined tasks.
Claude Haiku 4.5	claude-haiku-4-5	Anthropic	Standard	Anthropic's fastest model with near-frontier intelligence.
Gemini 3.1 Pro	gemini-3.1-pro-preview	Google	Advanced	Google's best model with world-class multimodal understanding.
GPT-5.4	gpt-5.4	OpenAI	Advanced	OpenAI's latest model for coding and agentic tasks across industries.
GPT-5.5	gpt-5.5	OpenAI	Advanced	OpenAI's new class of intelligence for coding and professional work.
Claude Sonnet 4.6	claude-sonnet-4-6	Anthropic	Advanced	Anthropic's mid tier. Strong accuracy, fast.
Claude Opus 4.6	claude-opus-4-6	Anthropic	Advanced	Anthropic's flagship. Highest quality.

Image Models

Used for generating and editing images within your apps.

Model	Model ID	Provider	Tier	Description
GPT Image 2	openai/gpt-image-2	OpenAI	Lite	OpenAI's latest image model. Extremely detailed with fine typography.
Grok Imagine Image	xai/grok-imagine-image	xAI	Lite	xAI's image model for generation and editing.
Gemini 2.5 Flash Image (Nano Banana)	fal-ai/gemini-25-flash-image	Google	Standard	Google's lightweight image model. Fast and affordable.
Gemini 3.1 Flash Image (Nano Banana 2)	fal-ai/gemini-3.1-flash-image-preview	Google	Standard	Google's fast tier. Quick, good quality.
Gemini 3 Pro Image (Nano Banana Pro)	fal-ai/gemini-3-pro-image-preview	Google	Advanced	Google's flagship. Best quality, higher res.

Video Models

Used for generating videos from text or images.

Model	Model ID	Provider	Tier	Description
Grok Imagine Video	xai/grok-imagine-video	xAI	Lite	xAI's video model for generation, image-to-video, reference images, editing, and extension.
Veo 3.1 Fast	fal-ai/veo3.1/fast	Google	Standard	Fast video generation with audio. Powered by Google Veo.
Seedance 2.0 Fast	bytedance/seedance-2.0/fast	ByteDance	Standard	ByteDance's faster Seedance 2.0 video model with native audio, image animation, and reference guidance.
Kling V3	fal-ai/kling-video/v3/standard	Kling	Standard	Fast cinematic video generation with native multi-shot support. Powered by Kling 3.0.
Kling O3	fal-ai/kling-video/o3/standard	Kling	Standard	Kling's faster O3 model for text-to-video, image animation, video references, and video editing.
Veo 3.1	fal-ai/veo3.1	Google	Advanced	High quality video generation with audio. Powered by Google Veo.
Seedance 2.0	bytedance/seedance-2.0	ByteDance	Advanced	ByteDance's cinematic video model with native audio, image animation, and reference-image guidance.
Kling V3 Pro	fal-ai/kling-video/v3/pro	Kling	Advanced	Cinematic video generation with fluid motion, native audio, and multi-shot support. Powered by Kling 3.0.
Kling O3 Pro	fal-ai/kling-video/o3/pro	Kling	Advanced	Kling's O3 Pro model for text-to-video, image animation, video references, and video editing.

Speech Models

Used for text-to-speech generation.

Model	Model ID	Provider	Tier	Description
GPT-4o Mini TTS	gpt-4o-mini-tts	OpenAI	Lite	OpenAI's fast tier. Natural, cost-effective.
ElevenLabs Turbo v2.5	fal-ai/elevenlabs/tts/turbo-v2.5	ElevenLabs	Standard	ElevenLabs' low-latency model. Fast, natural speech in 32 languages.
TTS-1 HD	tts-1-hd	OpenAI	Advanced	OpenAI's highest-quality TTS model.
Eleven v3	fal-ai/elevenlabs/tts/eleven-v3	ElevenLabs	Advanced	ElevenLabs' most expressive model. Rich emotion, 70+ languages.