feat: add llm-prices — CLI and MCP server for LLM API pricing comparison

[benbencodes]

Summary

Adds llm-prices to the CLI Tools & API Clients section.

What it does: Zero-dependency Python CLI and MCP server for comparing LLM API pricing across 22 providers. Developers use it to:

• Find the cheapest model for a given token budget
• Calculate exact API costs before committing to a provider
• Compare pricing across OpenAI, Anthropic, Google, xAI, Mistral, Groq, DeepSeek, and 15 more

Key facts:

• 130 models across 22 providers (data updated regularly)
• Zero dependencies — works offline, no API key required
• MCP server for AI assistant integration (Claude Desktop, Cursor, etc.)
• MIT licensed
• Install: pip install llm-prices

Example:

$ llm-prices list --top 5
$ llm-prices calc --model gpt-4o --input 1000000 --output 200000
$ llm-prices compare --models gpt-4o,claude-sonnet-4-6,gemini-2.5-flash