Update README.md

Author: ericmourant

.github-minimum-intelligence/README.md

@@ -7,7 +7,7 @@ A repository-local AI framework that plugs into a developer’s existing workflo
 ## Installation
 
 1. Copy [`.github/workflows/github-minimum-intelligence-agent.yml`](../.github/workflows/github-minimum-intelligence-agent.yml) into your repo's `.github/workflows/` directory.
-2. Add the LLM API key `OPENAI_API_KEY` as a **repository secret** under **[Settings → Secrets and variables → Actions]**. Any [supported LLM provider](#supported-providers) can work but to quick start OpenAI GPT 5.4 is pre-configured.
+2. Add the LLM API key `OPENAI_API_KEY` as a **repository secret** under **[Settings → Secrets and variables → Actions]**. Any [supported LLM provider](#supported-providers) can work but to quick start OpenAI GPT 5.5 is pre-configured.
 3. Go to **[Actions → github-minimum-intelligence-agent → Run workflow]** to install the agent files automatically, subsequent runs perform upgrades.
 4. Open an issue — the agent will reply.
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