Upgrade Explore Sub agent to use current Luna model

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Assessment

Difficulty
2/5
Estimated time
1-3 hours
Newbie friendliness
72/100
Issue type
Feature
Clarity
Mostly clear
Activity status
Active
Tech stack
vscode
Domain
devtools

Research direction

Start by locating the built-in Explore subagent definition containing the YAML front matter shown in the issue. Update its model list so GPT luna is first, then verify that the resulting Explore agent prefers it before the existing choices.

Written by the indexing model from the issue text.

Description

new release

Type: Feature Request

we need to add GPT luna as the first llm to hit in the built in Explore sub agent, at this point i would say Luna is a better choice for token savings for an explore:

---
name: Explore
description: Fast read-only codebase exploration and Q&A subagent. Prefer over manually chaining multiple search and file-reading operations to avoid cluttering the main conversation. Safe to call in parallel. Specify thoroughness: quick, medium, or thorough.
argument-hint: Describe WHAT you're looking for and desired thoroughness (quick/medium/thorough)
model: ['Claude Haiku 4.5 (copilot)', 'Gemini 3 Flash (Preview) (copilot)', 'Auto (copilot)']
target: vscode
user-invocable: false
tools: ['search', 'read', 'web', 'vscode/memory', 'github/issue_read', 'github.vscode-pull-request-github/issue_fetch', 'github.vscode-pull-request-github/activePullRequest', 'execute/getTerminalOutput', 'execute/testFailure']
agents: []
---

VS Code version: Code 1.138.0 (7debcd0e2acdea1c52de81bf9ee1620444407dda, 2026-09-15T07:24:32Z)
OS version: Windows_NT x64 10.0.26100
Modes:

System Info
Item Value
CPUs 12th Gen Intel(R) Core(TM) i9-12900H (20 x 2918)
GPU Status 2d_canvas: enabled
GPU0: VENDOR= 0x10de, DEVICE=0x25ba [NVIDIA RTX A2000 8GB Laptop GPU], DRIVER_VENDOR=NVIDIA, DRIVER_VERSION=32.0.15.6103 ACTIVE
GPU1: VENDOR= 0x8086, DEVICE=0x46a6 [Intel(R) Iris(R) Xe Graphics], DRIVER_VERSION=32.0.101.7085
GPU2: VENDOR= 0x1414, DEVICE=0x008c [Microsoft Basic Render Driver], DRIVER_VERSION=10.0.26100.9278
Machine model name:
Machine model version:
direct_rendering_display_compositor: disabled_off_ok
gpu_compositing: enabled
multiple_raster_threads: enabled_on
opengl: enabled_on
rasterization: enabled
raw_draw: disabled_off_ok
skia_graphite: disabled_off
trees_in_viz: disabled_off
video_decode: enabled
video_encode: enabled
webgl: enabled
webgpu: enabled
webnn: disabled_off
Load (avg) undefined
Memory (System) 31.68GB (11.09GB free)
Process Argv C:\Source\PowerShellJMC --crash-reporter-id 2e1090d9-fe71-4337-aa76-affdaa37d782
Screen Reader no
VM 0%
Extensions (48)
Name Identifier Author Version
Angular Language Service angular.ng-template Angular 22.1.1
Claude Code for VS Code anthropic.claude-code Anthropic 2.1.276
GitHub Markdown Preview bierner.github-markdown-preview bierner 0.4.0
Markdown Checkboxes bierner.markdown-checkbox bierner 0.4.0
Markdown Emoji bierner.markdown-emoji bierner 0.3.1
Markdown Footnotes bierner.markdown-footnotes bierner 0.1.1
Markdown Preview Mermaid Support bierner.markdown-mermaid bierner 1.32.1
Markdown Preview Github Styling bierner.markdown-preview-github-styles bierner 2.2.0
Markdown yaml Preamble bierner.markdown-yaml-preamble bierner 0.1.1
ESLint dbaeumer.vscode-eslint dbaeumer 3.0.34
Devolutions PowerShell Universal devolutionsinc.devolutions-powershell-universal devolutionsinc 2026.3.0
Docker DX docker.docker docker 0.18.0
Superpowers for Copilot Chat dwaintr.superpowers-vscode dwaintr 1.0.0
GitLens — Git supercharged eamodio.gitlens eamodio 19.1.0
EditorConfig editorconfig.editorconfig EditorConfig 0.18.2
GitHub Actions github.vscode-github-actions github 0.32.3
GitHub Pull Requests github.vscode-pull-request-github GitHub 0.166.1
Go golang.go golang 0.56.1
PowerShell Pro Tools ironmansoftware.powershellprotools ironmansoftware 2024.12.0
Angular Essentials (Version 22) johnpapa.angular-essentials johnpapa 22.0.1
Angular Snippets (Version 22) johnpapa.angular2 johnpapa 22.0.0
Peacock johnpapa.vscode-peacock johnpapa 4.4.1
Google Agent Platform for Copilot Chat (Vertex AI Models Chat Provider) jorsm.vertex-ai-models-chat-provider jorsm 0.6.4
JSON to TS mariusalchimavicius.json-to-ts MariusAlchimavicius 1.8.0
Rainbow CSV mechatroner.rainbow-csv mechatroner 3.24.1
Container Tools ms-azuretools.vscode-containers ms-azuretools 2.5.1
Docker ms-azuretools.vscode-docker ms-azuretools 2.0.0
C# Dev Kit ms-dotnettools.csdevkit ms-dotnettools 3.40.204
C# ms-dotnettools.csharp ms-dotnettools 2.160.4
.NET Install Tool ms-dotnettools.vscode-dotnet-runtime ms-dotnettools 3.1.0
Data Workspace ms-mssql.data-workspace-vscode ms-mssql 0.6.3
SQL Server (mssql) ms-mssql.mssql ms-mssql 1.45.1
SQL Bindings ms-mssql.sql-bindings-vscode ms-mssql 0.4.1
SQL Database Projects ms-mssql.sql-database-projects-vscode ms-mssql 1.7.0
Playwright Test for VSCode ms-playwright.playwright ms-playwright 1.1.19
Makefile Tools ms-vscode.makefile-tools ms-vscode 0.12.17
PowerShell ms-vscode.powershell ms-vscode 2025.4.0
Remote Explorer ms-vscode.remote-explorer ms-vscode 0.5.0
Remote - Tunnels ms-vscode.remote-server ms-vscode 1.5.3
Chat Customizations Evaluations ms-vscode.vscode-chat-customizations-evaluations ms-vscode 1.0.9
Live Share ms-vsliveshare.vsliveshare ms-vsliveshare 1.1.122
Color Highlight naumovs.color-highlight naumovs 2.8.0
Material Icon Theme pkief.material-icon-theme PKief 5.38.1
YAML redhat.vscode-yaml redhat 1.24.0
Code Spell Checker streetsidesoftware.code-spell-checker streetsidesoftware 4.9.3
Context7 MCP Server upstash.context7-mcp Upstash 1.1.0
Error Lens usernamehw.errorlens usernamehw 3.28.0
Private Hello Extension your-publisher.private-hello-extension your-publisher 0.0.1
A/B Experiments 
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Dominant language
TypeScript
Stars
193k
Forks
42.9k
Avg merge
14h 6m
Merged PRs (30d)
631

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

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