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Last updated: September 2026
Is Cursor better than Codex in 2026? In the Cursor vs Codex decision, the answer depends on where you want the agent to work and how many model vendors you want to keep. Cursor, made by Anysphere, is an AI-native code editor with its own Composer and Grok models plus third-party options. OpenAI Codex is a coding agent for the terminal, IDEs, the ChatGPT desktop app and the cloud, built around OpenAI's GPT-6 models.
Two events reshaped this comparison: SpaceX completed its acquisition of Cursor on August 14, 2026, and OpenAI will stop supplying models to Cursor on November 12. This guide compares benchmarks, pricing, workflows, enterprise controls and security with dated sources.
TL;DR: Key Takeaways
- Benchmarks: GPT-6 Astra in the Codex agent leads the Terminal-Bench 4.0 leaderboard at 58.2%. On Cursor's own CursorBench 4.0, the best OpenAI entry scores 41.7%, against 46.3% for Grok 4.7 and 27.7% for Composer 2.5.
- Model access: OpenAI will end its model contract with Cursor on November 12, 2026, per OpenAI. Cursor's CEO says OpenAI models serve about 5% of its traffic.
- Pricing: Both start at $20 per month. Cursor Teams costs $40 per user; ChatGPT Business, which includes Codex, costs $25 monthly or $20 billed annually, per the Cursor and OpenAI pricing pages.
- Adoption: Codex use at work grew from 3% to 16% in 2026 while Cursor fell from 18% to 12%, per a JetBrains survey of 15,000+ developers.
- Security: Both patched critical flaws, including Cursor's DuneSlide sandbox escape and Codex CLI's CVE-2025-61260, each rated CVSS 9.8.
At a Glance: Key Differences in 2026
| Cursor (Anysphere, a SpaceX company) | OpenAI Codex | |
|---|---|---|
| House or default models | Composer 2.5, Grok 4.7 | GPT-6 Astra, GPT-6 Sol, GPT-6 Luna |
| Model choice | Anthropic, Google, Meta, xAI; OpenAI until November 12 | OpenAI models only |
| Context window (top models) | Opus 5.5: 300K, up to 1M; Grok 4.7: 256K, up to 500K | GPT-6 Astra and Sol: 1.05M tokens |
| Individual pricing | Hobby free, Pro $20, Pro+ $60, Ultra $200 | Free, Go $8, Plus $20, Pro from $100 |
| Team pricing | Teams $40 per user, Premium $120 | Business $25 per user, $20 annual |
| Certifications | SOC 2 Type II, ISO 27001, ISO 42001, AIUC-1 | OpenAI-wide: SOC 2 Type 2, ISO 27001, ISO 42001 |
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What Are Cursor and Codex in 2026?
Cursor and Codex are AI coding agents that read a codebase, edit files and run commands. Cursor is a code editor forked from VS Code, with agents built in. Codex is OpenAI's agent, bundled into ChatGPT plans and available wherever developers work.
Cursor: an AI-native editor, now part of SpaceX
SpaceX completed a $60 billion all-stock acquisition of Anysphere on August 14, 2026, and Cursor now sits in the SpaceXAI division, according to Yahoo Finance. The house model Composer 2.5, released in May, is built on Moonshot's Kimi K2.5, per the Cursor blog. Cursor's models documentation calls xAI's Grok 4.7 "Cursor's frontier model developed with SpaceXAI".
Codex: OpenAI's coding agent
OpenAI's Codex documentation lists a cloud interface, the ChatGPT desktop app, a CLI, an IDE extension, an SDK and a GitHub Action. GPT-6 Astra arrived on September 3, 2026, and GPT-6 Sol and Luna on September 22, according to TechCrunch.
The OpenAI and Cursor split
On August 28, OpenAI said it "cannot be confident that SpaceX will use our technology within our terms of service" and set November 12 as the end date. Cursor CEO Michael Truell said OpenAI models serve about 5% of traffic, according to DevOps.com. According to CIO (2026), analyst Pareekh Jain warns that enterprises "can no longer assume" a model on a coding platform will stay available.
What it means for buyers: Cursor offers vendor choice without OpenAI, and Codex offers OpenAI's newest models without choice. For Anthropic's agent, see our Claude Code vs Cursor comparison.
Cursor vs Codex Benchmarks: What the Leaderboards Show
No public benchmark tests Cursor and Codex head to head with the same model. Terminal-Bench 4.0 lists Codex runs but no Cursor agent, and CursorBench runs only inside Cursor. Read each leaderboard as evidence about one agent plus specific models.
Terminal-Bench 4.0 results
Terminal-Bench 4.0, hosted by Harbor and the Laude Institute, scores agents on 66 terminal tasks.
| Rank | Model | Agent | Score |
|---|---|---|---|
| 1 | GPT-6 Astra | Codex | 58.2% |
| 2 | Claude Fable 5.1 | Claude Code | 57.9% |
| 6 | Grok 4.7 | Grok Build | 37.6% |
| 7 | GPT-5.6 Sol | Codex | 37.3% |
Source: Terminal-Bench 4.0 leaderboard (updated September 24, 2026).
Codex gained 20.9 points from GPT-5.6 Sol to GPT-6 Astra, so the model matters as much as the agent. OpenAI reports a similar, vendor-reported 57.9% for Astra on its GPT-6 Astra page. Vals AI runs every model in one neutral agent: there, Claude Opus 5.5 scores 61.62% at $19.07 per task and GPT-6 Astra 57.07% at $8.21.
CursorBench 4.0 results
Cursor launched CursorBench 4.0 on September 10, 2026. It ranks 57 model settings on real Cursor sessions inside Cursor's own agent.
| Model (effort) | Vendor | CursorBench 4.0 | Cost per task |
|---|---|---|---|
| Claude Opus 5.5 (High) | Anthropic | 56.0% | $3.97 |
| Grok 4.7 (Extra High) | xAI | 46.3% | $6.01 |
| GPT-5.6 Sol (Max) | OpenAI | 41.7% | $8.23 |
| GPT-5.6 Sol (High) | OpenAI | 35.7% | $2.85 |
| Composer 2.5 | Cursor | 27.7% (rank 50 of 57) | $0.68 |
Source: Cursor, CursorBench 4.0 leaderboard (run by Cursor, September 2026).
CursorBench lists no GPT-6 models, and the OpenAI rows above leave Cursor on November 12.
SWE-bench and DeepSWE
OpenAI stopped reporting SWE-bench Verified in February 2026, after finding "at least 59.4% of the audited problems have flawed test cases", and now recommends SWE-bench Pro, per its research post. On DeepSWE v1.1, run independently by Datacurve, GPT-6 Astra scores 74% at an average $4.43 per task.
How we compared Cursor and Codex
We used only published, dated sources: vendor pages, documentation, public leaderboards, a developer survey and CVE records. Vendor-run benchmarks are labeled, and prices are US list prices in September 2026. Use each figure as a starting point for your own pilot.
Workflow: IDE vs CLI vs Cloud Agents
Cursor suits developers who want AI inside a visual editor, with a CLI and cloud agents around it. Codex suits developers who delegate tasks from a terminal, their current editor or the cloud, then review the result. Both run parallel cloud agents.
| Feature | Cursor | Codex |
|---|---|---|
| Main interface | Standalone editor based on VS Code | CLI, IDE extension, desktop app, web |
| Editor support | Cursor itself | VS Code, Cursor, Windsurf, JetBrains, Xcode |
| Terminal agent | Cursor CLI: Agent, Plan and Ask modes | Codex CLI (0.158.0, September 28) |
| Cloud agents | Isolated VMs, launched from web, Slack or GitHub | Isolated cloud environments, parallel tasks |
| Code review | Bugbot, Security Review | GitHub code review, Codex Security |
Sources: Cursor changelog; Cursor cloud agents; Codex IDE docs; Codex changelog.
Where Cursor is stronger: line-by-line review and frequent model switching. September releases added Projects, where coordinator agents delegate to subagents, self-hosted machines for tool execution, and a Security Review bot for pull requests.
Where Codex is stronger: one agent across many surfaces, scriptable through the SDK or a GitHub Action. According to Zapier (2026), "Codex's default posture is locked down", while "Cursor's default posture is productive."
Cursor vs Codex Pricing: Plans, Credits and Cost per Task
Both tools cost $20 per month for an individual plan, but billing diverges beyond that. Cursor bills extra usage at API rates, while Codex shares ChatGPT plan limits and bills extras in credits. For teams, ChatGPT Business costs less per seat.
Subscription plans
| Plan level | Cursor | Codex (ChatGPT plans) |
|---|---|---|
| Free | Hobby: limited Agent requests | Free and Go ($8): GPT-6 Luna, limited use |
| Individual | Pro: $20/month | Plus: $20/month (5 to 45 Astra messages per 5 hours) |
| Power user | Pro+: $60; Ultra: $200 | Pro: from $100 (5x or 20x Plus limits) |
| Team | Teams: $40 per user | Business: $25 per user, $20 annual |
| Enterprise | Custom | Contact sales |
Sources: Cursor pricing; Codex pricing (September 2026).
Model token prices
| Per 1M tokens (input / output) | Price | Available in |
|---|---|---|
| GPT-6 Astra | $10 / $50 | Codex, OpenAI API |
| GPT-6 Sol | $2 / $10 | Codex, OpenAI API |
| GPT-5.6 Sol | $4 / $20 | Codex; Cursor until November 12 |
| Claude Opus 5.5 | $4 / $20 | Cursor |
| Grok 4.7 | $2 / $6 | Cursor |
| Composer 2.5 | $0.50 / $2.50 | Cursor |
Sources: OpenAI GPT-6 Astra and GPT-6 Sol model pages; Cursor models docs.
Codex credits for GPT-6 Sol cost 50 per million input tokens and 250 per million output tokens.
Cost per task
On CursorBench, Composer 2.5 costs $0.68 per task and GPT-5.6 Sol at High effort $2.85. On Vals AI's Terminal-Bench run, GPT-6 Astra costs $8.21 per task, under half of Opus 5.5's $19.07, for 4.55 fewer points. Gartner (2026) predicts that AI coding costs will exceed the average developer's salary by 2028, in a press release. Our LLM model routing guide covers how to cap that spend.
Enterprise Controls and Data Governance
Both tools offer SSO, SCIM and audit logs on top tiers. Codex adds a managed configuration file that pins sandbox and approval policies on every machine, while Cursor adds repository, model and MCP access controls and self-hosted execution.
| Control | Cursor | Codex |
|---|---|---|
| SSO | Teams and Enterprise (SAML/OIDC) | Business and Enterprise (SAML SSO, MFA) |
| SCIM, RBAC, audit | SCIM, audit logs, service accounts on Enterprise | SCIM, RBAC, Compliance API and audit events on Enterprise |
| Agent policy | Repository, model and MCP access; auto-run, browser and network controls | requirements.toml: approval policies, sandbox modes, MCP allowlist, web search |
| Training and retention | Privacy Mode on by default for Enterprise; zero retention for most models | No training on business data by default; retention controls on Enterprise |
Sources: Cursor security; Cursor privacy and data governance; Codex admin setup; Codex managed configuration; OpenAI security.
Note that for Claude Fable 5.1 and Fable 5 in Cursor, "Anthropic stores their inputs and outputs". Vendor reviews should cover the SpaceX parent and OpenAI exit for Cursor, and single-vendor dependence for Codex.
Security and Governance: Running Coding Agents Safely
Both tools have shipped and patched critical flaws. The shared weak point is that coding agents read untrusted repositories, configs, MCP servers and web pages, then act with a developer's permissions. That is prompt injection, ranked LLM01 by OWASP.
According to NIST (2026), a competition run by CAISI with Gray Swan logged more than 250,000 attacks on 13 frontier agent models. At least one attack succeeded against every model.
| Date | Tool | Issue | Severity | Status |
|---|---|---|---|---|
| Aug 2025 | Codex CLI | CVE-2025-61260: project .codex/config.toml ran MCP commands without approval | CVSS 9.8 | Fixed in 0.23.0 |
| Feb 2026 | Codex cloud | Branch-name command injection exposed GitHub tokens | No CVE listed | Patched February 5 |
| Feb 2026 | Cursor | CVE-2026-26268: hidden repository git hook runs during agent git operations | High | Fixed |
| Jul 2026 | Cursor | DuneSlide (CVE-2026-50548, CVE-2026-50549): zero-click sandbox escape | CVSS 9.8 | Fixed in Cursor 3.0 |
| Sep 2026 | Codex CLI and desktop | CVE-2026-19591: PowerShell parsing bypasses approval | CVSS 8.8 | Patched |
Sources: OpenCVE; The Hacker News on Codex; Novee Security; The Hacker News on Cursor; SentinelOne.
Default sandboxes differ
Codex runs local commands in a workspace-write sandbox with network access off, per its security docs. OpenAI warns that "prompt injection can cause the agent to fetch and follow untrusted instructions" once web access is on. Cursor's cloud agents run in isolated VMs with outbound domain limits.
Mapping both tools to OWASP agentic risks
The OWASP Top 10 for Agentic Applications maps these incidents:
- ASI01 Agent Goal Hijack: hidden instructions in repositories and web pages, as our indirect prompt injection guide explains.
- ASI04 Agentic Supply Chain: poisoned MCP configs, as in CVE-2025-61260. See MCP Security 101.
- ASI05 Unexpected Code Execution: git hooks and sandbox escapes, as in DuneSlide.
According to Veracode (2026), the code itself needs checking too: its GenAI Code Security Report found a 56% average security pass rate across 100+ models. For the model view, read our GPT-6 Astra analysis for CISOs.
How NeuralTrust secures Cursor and Codex
NeuralTrust adds one runtime layer for Cursor, Codex or both:
- Agent Gateway (TrustGate): governs which MCP tools each agent reaches, with 200+ pre-built MCP servers and setups for Cursor and Codex.
- Agent Runtime Security (TrustGuard): hooks check prompts, tool calls and results, then monitor, block or ask for approval.
- Agent Posture Management (TrustLens): shows which agents, models and MCP servers are in use.
- AI Red Teaming (TrustTest): tests your setup against poisoned repositories.
Which Should You Choose? Cursor or Codex
Choose Cursor for a visual editor and models from several vendors. Choose Codex if your engineers delegate work from the terminal or cloud, or you have standardized on OpenAI. You can also run both, since the Codex extension installs in Cursor.
| If you are... | Choose | Why |
|---|---|---|
| A developer who wants inline edits and visual diffs | Cursor | Editor-first workflow with agents built in |
| A team that wants several model vendors | Cursor | Claude, Gemini, Grok, Composer and Meta models |
| An engineer delegating long terminal tasks | Codex | GPT-6 Astra leads Terminal-Bench 4.0 |
| A platform team enforcing local agent policy | Codex | requirements.toml pins sandbox and MCP rules |
| A CISO approving coding agents at scale | Either, behind one gateway | One policy and audit trail for every tool call |
Conclusion
The Cursor vs Codex choice in 2026 is a choice between model breadth and model depth. Cursor offers a strong editor and several vendors, but it loses OpenAI models on November 12 and now belongs to SpaceX. Codex offers OpenAI's newest models, which lead Terminal-Bench 4.0 in its own agent, plus stricter defaults. Whichever you pick, control what the agent can execute, because both shipped critical fixes this year.
Secure Cursor and Codex in Production with NeuralTrust
Run Cursor, Codex or both behind one policy layer, with real-time protection for every prompt, tool call and MCP connection.
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Related Comparisons
FAQs about Cursor vs Codex
1. Is Cursor better than Codex?
It depends on your workflow. Cursor is better for a visual editor and a choice of vendors, including Claude Opus 5.5, which tops CursorBench 4.0. Codex is better for delegated terminal and cloud tasks: GPT-6 Astra in the Codex agent leads Terminal-Bench 4.0 at 58.2%.
2. Will Cursor still offer OpenAI models after November 12, 2026?
No, based on current announcements. OpenAI said on August 28, 2026 that it will end its model contract with Cursor on November 12, citing concerns about new owner SpaceX. Cursor says OpenAI models serve about 5% of its traffic. Teams using GPT models in Cursor should test alternatives now.
3. Can I use Codex inside Cursor?
OpenAI's documentation still lists Cursor as a supported editor for the Codex IDE extension, and Codex CLI runs in any terminal. OpenAI has not said whether the November 12 cutoff affects the extension. Two agents mean two sets of permissions, so a shared gateway keeps policy consistent.
4. Which is cheaper, Cursor or Codex?
For teams, Codex is cheaper per seat at list prices: ChatGPT Business costs $25 per user monthly or $20 billed annually, versus $40 for Cursor Teams. Individual plans both cost $20. Real cost depends on usage, since Cursor bills extras at API rates and Codex in credits.
5. Is Codex free to use?
Yes, with limits. OpenAI lists Codex on the Free plan with GPT-6 Luna in the desktop app, and on Go at $8 per month. Plus, at $20, adds GPT-6 Sol and Astra. Cursor's free Hobby plan offers limited Agent requests and access to Composer.
6. Which is more secure for enterprise use, Cursor or Codex?
Neither is secure by default. Cursor fixed the DuneSlide sandbox escape (CVSS 9.8), and Codex fixed CVE-2025-61260 (CVSS 9.8) and CVE-2026-19591 (CVSS 8.8). Codex ships stricter local defaults, while Cursor holds AIUC-1 and offers self-hosted execution. Add least-privilege credentials, approval gates and runtime monitoring to either.
About the Author
Roger Howroyd is Head of Global SEO and AI at NeuralTrust, where he leads the company's search strategy across SEO, AEO, GEO, and LLM optimization. He specializes in AI-powered search, content strategy, and SEM. Connect on LinkedIn.
NeuralTrust is the leading platform for securing and scaling AI agents. Named a Pioneer in the Gartner Emerging Market Quadrant for AI Application Security 2026, recognized across four Gartner Hype Cycle reports in 2026, and featured in the Gartner Market Guide for Guardian Agents 2026, the Gartner Market Guide for AI Gateways 2025 and the KuppingerCole Leadership Compass for Generative AI Defense 2025. Headquartered in Barcelona with offices in London and New York. ISO 27001 certified.
Sources
- OpenAI: Decision on Cursor (August 2026)
- DevOps.com: OpenAI cuts Cursor access (August 2026)
- CIO: Cursor loses OpenAI models (August 2026)
- Yahoo Finance: SpaceX-Cursor deal (August 2026)
- Cursor: Composer 2.5 (May 2026)
- Cursor: Models (September 2026)
- Cursor: CursorBench 4.0 (September 2026)
- Cursor: Changelog (September 2026)
- Cursor: Cloud agents (September 2026)
- Cursor: Pricing (September 2026)
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