CLIChat / LLM$3.13/M tokens

Use GPT-5.1 in Codex CLI

Connect the GPT-5.1 API to Codex CLI through SkillBoss — one API key, no provider lock-in. Starting at $3.13/M tokens.

Adaptive reasoning model that dynamically adjusts thinking time based on task complexity. Ideal for balancing reasoning depth with response speed, coding, and cache-optimized scenarios.

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 openai/gpt-5.1
  4. Run your first request — GPT-5.1 is now available in Codex CLI.

Model Specs

Model
GPT-5.1
Type
Chat / LLM
Vendor
openai
Category
chat-llm
Pricing
$3.13/M tokens
API ID
openai/gpt-5.1

Quick Start Code

Call GPT-5.1 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": "openai/gpt-5.1",
    "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 GPT-5.1 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 openai/gpt-5.1 and you're ready to go.

How much does GPT-5.1 cost?

GPT-5.1 costs $3.13/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.