Summarize

Fast CLI to summarize URLs, local files, and YouTube links.

Quick start

summarize "https://example.com" --model google/gemini-3-flash-preview
summarize "/path/to/file.pdf" --model google/gemini-3-flash-preview
summarize "https://youtu.be/dQw4w9WgXcQ" --youtube auto

OpenCode Zen (FREE models!)

Use OpenCode Zen for free summarization with GLM 4.7:

# Set env vars for OpenCode Zen
export OPENAI_BASE_URL="https://opencode.ai/zen/v1"
export OPENAI_API_KEY="<your-zen-api-key>"  # Get from https://opencode.ai/auth

# Summarize with free GLM 4.7
summarize "https://example.com" --model openai/glm-4.7-free

Free models on OpenCode Zen:

Model	Model ID
GLM 4.7	glm-4.7-free
Big Pickle	big-pickle
Grok Code Fast 1	grok-code
MiniMax M2.1	minimax-m2.1-free
GPT 5 Nano	gpt-5-nano

When using summarize with OpenCode Zen:

OPENAI_BASE_URL="https://opencode.ai/zen/v1" OPENAI_API_KEY="$OPENCODE_ZEN_KEY" summarize "URL" --model openai/glm-4.7-free

Model + keys

Set the API key for your chosen provider:

• OpenAI: OPENAI_API_KEY
• Anthropic: ANTHROPIC_API_KEY
• xAI: XAI_API_KEY
• Google: GEMINI_API_KEY (aliases: GOOGLE_GENERATIVE_AI_API_KEY, GOOGLE_API_KEY)

Default model is google/gemini-3-flash-preview if none is set.

Useful flags

• --length short|medium|long|xl|xxl|<chars>
• --max-output-tokens <count>
• --extract-only (URLs only)
• --json (machine readable)
• --firecrawl auto|off|always (fallback extraction)
• --youtube auto (Apify fallback if APIFY_API_TOKEN set)

Config

Optional config file: ~/.summarize/config.json

{ "model": "openai/gpt-5.2" }

For OpenCode Zen default:

{
  "model": "openai/big-pickle",
  "baseUrl": "https://opencode.ai/zen/v1"
}

Optional services:

• FIRECRAWL_API_KEY for blocked sites
• APIFY_API_TOKEN for YouTube fallback