Claude Code vs Codex CLI

Both engines work with Maia. Here's how they compare on cost, capabilities, and trade-offs.

Quick recommendation

Budget is tight (~$30/mo total): Codex CLI with pay-per-use API. You'll get a solid assistant for light use.

Want the best experience (~$110/mo total): Claude Code Max 5x plan. Full hook system, session resume, strongest reasoning.

Power user (~$210/mo total): Claude Code Max 20x. Run heavy cron schedules, many workers, and complex autonomous tasks.

* Total includes ~$9/mo for Hetzner VM

Claude Code

by AnthropicRecommended
Pro Plan
$20/mo
Standard usage

Good for light personal use. You'll hit rate limits with heavy cron jobs or multiple concurrent workers.

Max Plan (5x)
$100/mo
5x usage vs Pro

Best value for most users. Handles a personal assistant with daily cron jobs, moderate Slack usage, and occasional workers.

Max Plan (20x)
$200/mo
20x usage vs Pro

For power users. Heavy autonomous workflows, many concurrent workers, frequent cron jobs. This is what serious 24/7 agents need.

Advantages

  • + Strongest reasoning (Claude Opus/Sonnet)
  • + Full hook system (4 hook types — guaranteed auto-recall)
  • + Session resume (threads continue with full context)
  • + Best for complex, multi-step autonomous workflows
  • + Anthropic's safety and alignment focus

Trade-offs

  • - More expensive than Codex for light usage
  • - Subscription-based (pay even if idle)

Codex CLI

by OpenAI
API (Pay-per-use)
$20-80/mo typical
Based on actual token usage

Cost scales with usage. Light personal assistant use is cheap. Heavy autonomous workflows cost more.

ChatGPT Plus
$20/mo
Includes API credits

Good starting point. May need additional API credits for heavy usage.

ChatGPT Pro
$200/mo
Unlimited (mostly)

Comparable to Claude Max 20x. Includes access to o3 and higher reasoning models.

Advantages

  • + Pay-per-use option (cheaper for light usage)
  • + Built-in automatic memory system
  • + Good coding capabilities (GPT-4o, o3)
  • + Lower floor cost for experimentation

Trade-offs

  • - No per-message hook (auto-recall is best-effort, ~90% reliable)
  • - No session resume (threads start fresh each time)
  • - Less nuanced reasoning for complex orchestration
  • - Newer/less polished agent loop

Total Monthly Cost Breakdown

Budget Setup
Codex CLI (pay-per-use) + Hetzner CPX21
~$30/mo
Recommended Setup
Claude Code Max 5x + Hetzner CPX21
~$109/mo
Power Setup
Claude Code Max 20x + Hetzner CPX31
~$215/mo
Local Machine (No VM)
Any engine, no hosting cost
$20-200/mo

What about OpenClaw?

OpenClaw uses per-token API calls through a custom agent loop — you're paying for every reasoning step in their ReAct framework. Maia uses Claude Code or Codex CLI directly, which means you pay your existing subscription and get the full native performance of the CLI tool — no wrapper overhead, no extra token spend. For the same monthly budget, you get more done with Maia.

Start the Maia Setup Guide
Created by Ben Valentin. Built at Madewell AI.