Grok Build vs OpenAI Codex CLI — Feature Comparison
Quick answer: Grok Build supports 18 of 18 tracked features; OpenAI Codex CLI supports 17 of 18. Matrix last updated November 13, 2026.
Grok Build (by SpaceXAI) vs OpenAI Codex CLI (by OpenAI): a side-by-side comparison of tracked features, release cadence, and the latest releases of each tool. Data as of November 14, 2026, refreshed daily.
Verdict: Grok vs Codex CLI
Grok Build is the stronger all-around choice for most development teams, though OpenAI Codex CLI remains a compelling alternative for terminal-first workflows. Grok Build covers all 18 tracked features, including JetBrains IDE integration, which Codex CLI lacks — a meaningful distinction for teams whose engineers work in IntelliJ, PyCharm, or Rider daily. Grok Build also ships at a noticeably higher cadence in the recent window (67 releases versus 37 in the same 90-day period), suggesting faster iteration on bugs, features, and model updates. That pace can matter in a fast-moving AI tooling landscape where prompt handling and context quality improve frequently. OpenAI Codex CLI, built on Rust for performance and oriented toward the command line, is not standing still — its release history is substantial and its feature parity across the 17 tracked capabilities is near-identical. Where Codex CLI shines is in lightweight, terminal-native workflows: it imposes less infrastructure overhead and suits engineers who prefer scripting, CI pipelines, or environments where a full IDE is overkill. The single missing feature (JetBrains support) is irrelevant to those users. In short, if your team is IDE-diverse or JetBrains-heavy and values rapid tooling updates, Grok Build is the safer long-term bet; if you live in the terminal and want a lean, performant CLI companion, Codex CLI delivers nearly everything Grok Build does with less surface area.
Choose Grok Build if: Choose Grok Build if your team uses JetBrains IDEs or if you want the fastest-moving release cadence with complete coverage across all tracked features.
Choose OpenAI Codex CLI if: Choose OpenAI Codex CLI if you prefer a terminal-native, lightweight tool that fits cleanly into shell scripts, CI pipelines, or environments where a full IDE integration is unnecessary.
Key differences
- Feature coverage: Grok Build supports all 18 tracked features; Codex CLI supports 17, missing JetBrains IDE integration
- Release cadence: Grok Build shipped roughly 80% more releases in the recent 90-day window, indicating faster iteration
- Runtime and orientation: Codex CLI is built in Rust for performance and targets terminal/CLI workflows; Grok Build targets broader IDE and toolchain integration
- Ecosystem reach: Grok Build explicitly covers JetBrains IDEs, expanding its addressable developer audience beyond VS Code and terminal users
- Overall maturity signal: both tools share the same total release count historically, reflecting comparable longevity despite differing recent velocity
At a glance
| Tool | Latest version | Release date | Releases tracked |
|---|---|---|---|
| Grok Build | v1.0.85 | November 13, 2026 | 194 |
| OpenAI Codex CLI | rust-v0.169.0 | November 13, 2026 | 184 |
Grok vs Codex CLI: key feature differences
Grok Build supports 18 of 18 tracked features; OpenAI Codex CLI supports 17 of 18. Both support 17 features.
What Grok has that Codex CLI doesn't
- JetBrains
What Codex CLI has that Grok doesn't
None in the tracked matrix.
Release cadence: Grok vs Codex CLI
Grok ships more often: 76 releases in the last 90 days versus 40 for Codex CLI. Counts are as of November 14, 2026.
| Metric | Grok | Codex CLI |
|---|---|---|
| Releases in the last 30 days | 25 | 9 |
| Releases in the last 90 days | 76 | 40 |
| Median gap between recent releases | 1 day | 1.2 days |
| Releases tracked | 194 | 184 |
| First tracked release | May 17, 2026 | June 30, 2025 |
What's new in Grok and Codex CLI
Latest Grok Build releases
- Grok Build v1.0.85 (November 13, 2026) — Grok Build 1.0.85
- Grok Build v1.0.84 (November 12, 2026) — Grok Build 1.0.84
- Grok Build v1.0.83 (November 11, 2026) — Grok Build 1.0.83
Latest OpenAI Codex CLI releases
- OpenAI Codex CLI rust-v0.169.0 (November 13, 2026) — Codex CLI rust-v0.169.0 is here: multiple side-chat tabs, searchable past tasks, collapsible turn details, and in-terminal provider setup. Want to see what else changed?
- OpenAI Codex CLI rust-v0.168.0 (November 13, 2026) — Codex CLI rust-v0.168.0 is here: pick a default model provider, split your chat with a side-conversation pane, attach audio recordings, and generate animated GIFs. Plus a batch of fixes. Ready to…
- OpenAI Codex CLI rust-v0.167.2 (November 11, 2026) — Codex CLI rust-v0.167.2 is here: tool updates now stream incrementally by default on Google Cloud Vertex AI. Want the old behavior back? One config flag does it. Curious what else changed under the…
Core Editing
Multi-file editing, streaming, undo capabilities
| Feature | Grok | Codex CLI |
|---|---|---|
| Multi-file Editing — Edit multiple files in a single operation | ✓ since 1.0.53 | ✓ (Codex CLI is a coding agent that edits files; multi-file editing is a core capability implied by the agent command cente) |
| Streaming Output — Real-time streaming of AI responses | ✓ since 1.0.62 | ✓ since rust-v0.169.0 |
| Undo/Redo — Ability to undo and redo changes | ✓ since 1.0.67 | ✓ since rust-v0.164.0 |
| Diff View — Visual comparison of changes | ✓ since 1.0.53 | ✓ since rust-v0.169.0 |
Terminal Integration
Shell and command execution support
| Feature | Grok | Codex CLI |
|---|---|---|
| Command Execution — Run shell commands | ✓ since 1.0.69 | ✓ since rust-v0.169.0 |
| Shell Integration — Integration with user shell environment | ✓ since 1.0.64 | ✓ since rust-v0.164.0 |
| Background Tasks — Run tasks in background | ✓ since 1.0.67 | ✓ since rust-v0.169.0 |
MCP Support
Model Context Protocol server and client capabilities
| Feature | Grok | Codex CLI |
|---|---|---|
| MCP Client — Connect to MCP servers | ✓ since 1.0.64 | ✓ since rust-v0.169.0 |
| MCP Server — Expose as MCP server | ✓ since 1.0.64 | ✓ since rust-v0.169.0 |
| Custom Tools — Define and use custom tools | ✓ since 1.0.1 | ✓ since rust-v0.169.0 |
IDE Integrations
VS Code, JetBrains, and other editor support
| Feature | Grok | Codex CLI |
|---|---|---|
| VS Code — Visual Studio Code integration | ✓ since 1.0.1 | ✓ since rust-v0.136.0 |
| JetBrains — IntelliJ/WebStorm integration | ✓ since 0.2.96 | — |
| Vim/Neovim — Vim or Neovim integration | ✓ since 1.0.69 | ✓ since rust-v0.166.0 |
| Web UI — Browser-based interface | ✓ since 1.0.64 | ✓ since rust-v0.169.0 |
Agentic Features
Planning, tool use, and autonomous capabilities
| Feature | Grok | Codex CLI |
|---|---|---|
| Planning Mode — Plan before executing changes | ✓ since 1.0.68 | ✓ since rust-v0.169.0 |
| Autonomous Mode — Extended autonomous operation | ✓ since 1.0.67 | ✓ since rust-v0.169.0 |
| Task Decomposition — Break complex tasks into steps | ✓ since 1.0.67 | ✓ since rust-v0.169.0 |
| Context Management — Manage context across conversations | ✓ since 1.0.68 | ✓ since rust-v0.169.0 |
Feature timeline: who shipped first
First release where Grok and Codex CLI each shipped a notable feature, and which tool led.
| Feature | Grok | Codex CLI | Who led |
|---|---|---|---|
| Skills / Plugins | June 11, 2026 | December 10, 2025 | Codex CLI first, 182d ahead |
| Sandboxing / Permission Modes | August 26, 2026 | August 7, 2025 | Codex CLI first, 383d ahead |
| Subagents / Parallel Agents | June 18, 2026 | January 25, 2026 | Codex CLI first, 143d ahead |
| Background Tasks | September 4, 2026 | September 9, 2026 | Grok first, 6d ahead |
| Extended Thinking | July 1, 2026 | July 9, 2025 | Codex CLI first, 357d ahead |
| Hooks | June 18, 2026 | May 8, 2026 | Codex CLI first, 40d ahead |
| Image / Vision Input | May 20, 2026 | December 2, 2025 | Codex CLI first, 168d ahead |
| MCP Support | — | July 23, 2025 | only Codex CLI |
| Voice Input | July 1, 2026 | February 25, 2026 | Codex CLI first, 125d ahead |
| Web Search / Fetch | May 21, 2026 | June 9, 2026 | Grok first, 20d ahead |
| Headless / Non-interactive Mode | August 26, 2026 | July 19, 2025 | Codex CLI first, 403d ahead |
| Checkpoints / Rewind | May 28, 2026 | December 15, 2025 | Codex CLI first, 163d ahead |
| Custom Slash Commands | July 9, 2026 | August 20, 2025 | Codex CLI first, 323d ahead |
| Project Memory Files | September 16, 2026 | February 12, 2026 | Codex CLI first, 215d ahead |
| Git / PR Integration | — | May 7, 2026 | only Codex CLI |
| Planning Mode | October 20, 2026 | January 25, 2026 | Codex CLI first, 267d ahead |
| Todo / Task List | May 22, 2026 | May 21, 2026 | Codex CLI first, 0d ahead |
| JetBrains Support | May 26, 2026 | — | only Grok |
Frequently asked questions
Which is better, Grok Build or OpenAI Codex CLI?
Grok Build is the stronger all-around choice for most development teams, though OpenAI Codex CLI remains a compelling alternative for terminal-first workflows. Grok Build covers all 18 tracked features, including JetBrains IDE integration, which Codex CLI lacks — a meaningful distinction for teams whose engineers work in IntelliJ, PyCharm, or Rider daily. Grok Build also ships at a noticeably higher cadence in the recent window (67 releases versus 37 in the same 90-day period), suggesting faster iteration on bugs, features, and model updates. That pace can matter in a fast-moving AI tooling landscape where prompt handling and context quality improve frequently. OpenAI Codex CLI, built on Rust for performance and oriented toward the command line, is not standing still — its release history is substantial and its feature parity across the 17 tracked capabilities is near-identical. Where Codex CLI shines is in lightweight, terminal-native workflows: it imposes less infrastructure overhead and suits engineers who prefer scripting, CI pipelines, or environments where a full IDE is overkill. The single missing feature (JetBrains support) is irrelevant to those users. In short, if your team is IDE-diverse or JetBrains-heavy and values rapid tooling updates, Grok Build is the safer long-term bet; if you live in the terminal and want a lean, performant CLI companion, Codex CLI delivers nearly everything Grok Build does with less surface area.
What is the difference between Grok and Codex CLI?
Grok Build supports 18 of 18 tracked features; OpenAI Codex CLI supports 17 of 18. Only Grok: JetBrains. Both support 17 tracked features.
Which gets updated more often, Grok or Codex CLI?
Grok Build ships more often. In the 90 days to November 14, 2026, Havoptic tracked 76 Grok releases and 40 Codex CLI releases (194 and 184 releases tracked in total). Grok's median gap between its last 21 releases is 1 day. Codex CLI's median gap between its last 21 releases is 1.2 days.
What are the latest versions of Grok and Codex CLI?
The latest Grok Build release is v1.0.85, released November 13, 2026. The latest OpenAI Codex CLI release is rust-v0.169.0, released November 13, 2026.
Do Grok and Codex CLI support MCP (Model Context Protocol)?
Grok Build supports MCP Client, MCP Server, and Custom Tools. OpenAI Codex CLI supports MCP Client, MCP Server, and Custom Tools.
Release velocity
Havoptic tracks 194 Grok releases and 184 Codex CLI releases. See release frequency charts for side-by-side velocity analysis, or browse the Grok Build changelog and OpenAI Codex CLI changelog.
Related comparisons
More Grok Build comparisons
- Grok Build vs Claude Code
- Grok Build vs Cursor
- Grok Build vs Gemini CLI
- Grok Build vs Kiro CLI
- Grok Build vs GitHub Copilot CLI
- Grok Build vs Devin Desktop
- Grok Build vs Antigravity CLI
More OpenAI Codex CLI comparisons
- OpenAI Codex CLI vs Claude Code
- OpenAI Codex CLI vs Cursor
- OpenAI Codex CLI vs Gemini CLI
- OpenAI Codex CLI vs Kiro CLI
- OpenAI Codex CLI vs GitHub Copilot CLI
- OpenAI Codex CLI vs Devin Desktop
- OpenAI Codex CLI vs Antigravity CLI
Data source
Feature data is maintained in feature-matrix.json under a CC-BY-4.0 license. Release data comes from releases.json. Both are updated daily. See the methodology page for details on sourcing and human review.