Models & Aliases

llmist supports multiple LLM providers with convenient aliases for quick access.

Model Aliases

Use short aliases instead of full model names:

Alias	Full Model Name	Provider
gpt5	gpt-5	OpenAI
gpt5-mini	gpt-5-mini	OpenAI
gpt4o	gpt-4o	OpenAI
gpt4-turbo	gpt-4-turbo	OpenAI
o3-mini	o3-mini	OpenAI
sonnet	claude-sonnet-4-5	Anthropic
opus	claude-opus-4-5	Anthropic
haiku	claude-haiku-4-5	Anthropic
flash	gemini-2.5-flash	Google
pro	gemini-3-pro-preview	Google

Tip

Use aliases for quick prototyping: --model sonnet instead of --model anthropic:claude-sonnet-4-5

Provider-Prefixed Models

For explicit provider selection, use the provider:model format:

bun

# Explicit provider selection
bunx @llmist/cli complete "Hello" --model openai:gpt-5
bunx @llmist/cli complete "Hello" --model anthropic:claude-sonnet-4-5
bunx @llmist/cli complete "Hello" --model gemini:gemini-2.5-flash

npm

# Explicit provider selection
npx @llmist/cli complete "Hello" --model openai:gpt-5
npx @llmist/cli complete "Hello" --model anthropic:claude-sonnet-4-5
npx @llmist/cli complete "Hello" --model gemini:gemini-2.5-flash

Model Capabilities

Model	Vision	Streaming	Tool Use	Context
GPT-5	✓	✓	✓	128K
GPT-5 Mini	✓	✓	✓	128K
GPT-4o	✓	✓	✓	128K
Claude Opus 4.5	✓	✓	✓	200K
Claude Sonnet 4.5	✓	✓	✓	200K
Claude Haiku 4.5	✓	✓	✓	200K
Gemini Flash	✓	✓	✓	1M
Gemini Pro	✓	✓	✓	1M

Recommended Models by Use Case

Use Case	Recommended	Why
General tasks	sonnet	Best balance of quality and speed
Complex reasoning	opus	Highest capability
High-volume tasks	haiku, flash	Fast and cost-effective
Long documents	flash, pro	1M token context
Coding	sonnet, gpt5	Strong code understanding
Vision tasks	gpt4o, flash	Excellent image analysis

Image Generation Models

Model	Provider	Description
dall-e-3	OpenAI	High-quality image generation
dall-e-2	OpenAI	Faster, lower cost
imagen-3	Google	Gemini image generation

Speech Models

Model	Provider	Description
tts-1	OpenAI	Text-to-speech, standard quality
tts-1-hd	OpenAI	Text-to-speech, high quality

Usage Examples

Library

import { LLMist } from 'llmist';

// Using alias
const answer = await LLMist.createAgent()
  .withModel('sonnet')
  .askAndCollect('Hello!');

// Using full name
const answer2 = await LLMist.createAgent()
  .withModel('anthropic:claude-sonnet-4-5')
  .askAndCollect('Hello!');

CLI (bun)

# Using alias
bunx @llmist/cli complete "Hello" --model sonnet

# Using full name
bunx @llmist/cli complete "Hello" --model anthropic:claude-sonnet-4-5

CLI (npm)

# Using alias
npx @llmist/cli complete "Hello" --model sonnet

# Using full name
npx @llmist/cli complete "Hello" --model anthropic:claude-sonnet-4-5

Auto-Discovery

llmist automatically discovers available providers based on environment variables:

Variable	Provider
OPENAI_API_KEY	OpenAI
ANTHROPIC_API_KEY	Anthropic
GEMINI_API_KEY	Google Gemini

See Environment Variables for complete configuration.