diff --git a/.env.example b/.env.example
index 3c960e9b..62bfc4d8 100644
--- a/.env.example
+++ b/.env.example
@@ -9,7 +9,7 @@ SHANNON_AI_MODEL=anthropic:claude-sonnet-4-6
 
 # --- OpenAI ------------------------------------------------------------------
 # SHANNON_AI_API_KEY=your-api-key-here
-# SHANNON_AI_MODEL=openai:gpt-5.5
+# SHANNON_AI_MODEL=openai:gpt-6-sol
 
 # --- xAI ---------------------------------------------------------------------
 # SHANNON_AI_API_KEY=your-api-key-here
@@ -30,7 +30,7 @@ SHANNON_AI_MODEL=anthropic:claude-sonnet-4-6
 # OpenAI Responses API:
 # SHANNON_AI_API_KEY=your-gateway-key-here
 # SHANNON_AI_BASE_URL=https://llm-gateway.example.com/v1
-# SHANNON_AI_MODEL=openai:gpt-5.5
+# SHANNON_AI_MODEL=openai:gpt-6-sol
 
 # --- Other provider ----------------------------------------------------------
 # Any other provider the Pi harness supports. Name it in SHANNON_AI_MODEL and
diff --git a/docs/ai-providers.md b/docs/ai-providers.md
index 42a64ec0..1d8302b2 100644
--- a/docs/ai-providers.md
+++ b/docs/ai-providers.md
@@ -272,12 +272,12 @@ Before running a pentest, review the [cyber safeguards requirements](#cyber-safe
 
    ```bash
    export SHANNON_USE_PI_AUTH=1
-   export SHANNON_AI_MODEL=openai-codex:gpt-5.5
+   export SHANNON_AI_MODEL=openai-codex:gpt-6-sol
    ```
 
 4. In npx mode, run `npx @keygraph/shannon start ...` from the same shell. In source-build mode, add the two variables to `.env` and run `./shannon start ...`.
 
-Supported Codex models are `gpt-5.6-sol`, `gpt-5.5`, and `gpt-5.4`.
+Supported Codex models are `gpt-6-sol`, `gpt-5.6-sol`, `gpt-5.5`, and `gpt-5.4`.
 
 ## xAI (Grok subscription)
 
diff --git a/llms-full.txt b/llms-full.txt
index fe9c86f4..54087a32 100644
--- a/llms-full.txt
+++ b/llms-full.txt
@@ -1044,12 +1044,12 @@ Before running a pentest, review the [cyber safeguards requirements](#cyber-safe
 
    ```bash
    export SHANNON_USE_PI_AUTH=1
-   export SHANNON_AI_MODEL=openai-codex:gpt-5.5
+   export SHANNON_AI_MODEL=openai-codex:gpt-6-sol
    ```
 
 4. In npx mode, run `npx @keygraph/shannon start ...` from the same shell. In source-build mode, add the two variables to `.env` and run `./shannon start ...`.
 
-Supported Codex models are `gpt-5.6-sol`, `gpt-5.5`, and `gpt-5.4`.
+Supported Codex models are `gpt-6-sol`, `gpt-5.6-sol`, `gpt-5.5`, and `gpt-5.4`.
 
 ## xAI (Grok subscription)