diff --git a/.github/workflows/a11y-audit.yml b/.github/workflows/a11y-audit.yml
index 0daa769..70e6972 100644
--- a/.github/workflows/a11y-audit.yml
+++ b/.github/workflows/a11y-audit.yml
@@ -86,8 +86,8 @@ jobs:
           ELM_API_KEY: ${{ secrets.ELM_API_KEY || 'a11y-audit-no-model-calls' }}
           ELM_BASE_URL: ${{ secrets.ELM_BASE_URL || vars.ELM_BASE_URL || 'https://elm.edina.ac.uk/api/v1' }}
           APPROVED_ELM_BASE_URL: ${{ secrets.ELM_BASE_URL || vars.ELM_BASE_URL || 'https://elm.edina.ac.uk/api/v1' }}
-          ELM_MODEL: ${{ secrets.ELM_MODEL || vars.ELM_MODEL || 'meta-llama/Llama-3.3-70B-Instruct' }}
-          APPROVED_ELM_MODEL: ${{ secrets.ELM_MODEL || vars.ELM_MODEL || 'meta-llama/Llama-3.3-70B-Instruct' }}
+          ELM_MODEL: ${{ secrets.ELM_MODEL || vars.ELM_MODEL || 'Qwen/Qwen3.5-397B-A17B-FP8' }}
+          APPROVED_ELM_MODEL: ${{ secrets.ELM_MODEL || vars.ELM_MODEL || 'Qwen/Qwen3.5-397B-A17B-FP8' }}
           VFB_MCP_URL: ${{ secrets.VFB_MCP_URL || vars.VFB_MCP_URL || 'https://vfb3-mcp-preview.virtualflybrain.org/' }}
           RATE_LIMIT_PER_IP: '10000'
           GA_MEASUREMENT_ID: ''
diff --git a/.github/workflows/task-battery.yml b/.github/workflows/task-battery.yml
index 24a5278..5e75baf 100644
--- a/.github/workflows/task-battery.yml
+++ b/.github/workflows/task-battery.yml
@@ -115,8 +115,8 @@ jobs:
           OPENAI_API_KEY: ${{ secrets.OPENAI_API_KEY }}
           ELM_BASE_URL: ${{ secrets.ELM_BASE_URL || vars.ELM_BASE_URL || 'https://elm.edina.ac.uk/api/v1' }}
           APPROVED_ELM_BASE_URL: ${{ secrets.ELM_BASE_URL || vars.ELM_BASE_URL || 'https://elm.edina.ac.uk/api/v1' }}
-          ELM_MODEL: ${{ secrets.ELM_MODEL || vars.ELM_MODEL || 'meta-llama/Llama-3.3-70B-Instruct' }}
-          APPROVED_ELM_MODEL: ${{ secrets.ELM_MODEL || vars.ELM_MODEL || 'meta-llama/Llama-3.3-70B-Instruct' }}
+          ELM_MODEL: ${{ secrets.ELM_MODEL || vars.ELM_MODEL || 'Qwen/Qwen3.5-397B-A17B-FP8' }}
+          APPROVED_ELM_MODEL: ${{ secrets.ELM_MODEL || vars.ELM_MODEL || 'Qwen/Qwen3.5-397B-A17B-FP8' }}
           VFB_MCP_URL: ${{ secrets.VFB_MCP_URL || vars.VFB_MCP_URL || 'https://vfb3-mcp-preview.virtualflybrain.org/' }}
           RATE_LIMIT_PER_IP: '10000'
           TASK_BATTERY_REPETITIONS: ${{ github.event.inputs.repetitions || '1' }}
diff --git a/README.md b/README.md
index 81a140a..fee6dc4 100644
--- a/README.md
+++ b/README.md
@@ -85,7 +85,7 @@ Create `.env.local` with explicit values:
 ```bash
 ELM_API_KEY=elm-xxxxxxxx-xxxxxxxxxxxxxxxx
 ELM_BASE_URL=https://elm.edina.ac.uk/api/v1
-ELM_MODEL=meta-llama/Llama-3.3-70B-Instruct
+ELM_MODEL=Qwen/Qwen3.5-397B-A17B-FP8
 LOG_ROOT_DIR=./logs
 ```