CLIChat / LLM$7.50/M tokens

Use Claude 4.5 Sonnet in Codex CLI

Connect the Claude 4.5 Sonnet API to Codex CLI through SkillBoss — one API key, no provider lock-in. Starting at $7.50/M tokens.

Balanced performance and speed, strongest in coding and agentic work. Ideal for multi-file code changes, debugging complex issues, architecture decisions, content creation, and daily development.

Setup in Codex CLI

  1. Sign up at skillboss.co and create an API key.
  2. Configure Codex CLI to use the SkillBoss API endpoint: https://api.skillboss.co/v1
  3. Set the model to claude-4-5-sonnet
  4. Run your first request — Claude 4.5 Sonnet is now available in Codex CLI.

Model Specs

Model
Claude 4.5 Sonnet
Type
Chat / LLM
Vendor
anthropic
Category
chat-llm
Pricing
$7.50/M tokens
API ID
claude-4-5-sonnet

Quick Start Code

Call Claude 4.5 Sonnet from Codex CLI using the SkillBoss unified API:

curl -X POST 'https://api.skillboss.co/v1/chat/completions' \
  -H 'Authorization: Bearer $SKILLBOSS_API_KEY' \
  -H 'Content-Type: application/json' \
  -d '{
    "model": "claude-4-5-sonnet",
    "messages": [{"role": "user", "content": "Hello from Codex CLI"}]
  }'

The same API key works with all 600+ models. Change the model parameter to switch instantly.

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FAQ

How do I use Claude 4.5 Sonnet in Codex CLI?

Sign up at skillboss.co, get an API key, and configure Codex CLI to use the SkillBoss API endpoint (https://api.skillboss.co/v1). Set the model to claude-4-5-sonnet and you're ready to go.

How much does Claude 4.5 Sonnet cost?

Claude 4.5 Sonnet costs $7.50/M tokens via SkillBoss with pay-as-you-go billing. No subscription required.

Can I switch to another model without changing my code?

Yes — SkillBoss provides a unified API compatible with OpenAI format. Change the model parameter to switch between 600+ models instantly without modifying your integration.