OpenAI Codex vs Opera Neon

Features, pricing, ratings, and pros and cons, side by side.

OpenAI Codex

OpenAI's coding agent that writes, reviews and runs code from terminal, IDE, desktop or cloud

Freemium

Visit website View details

Opera Neon

Agentic AI browser that researches, navigates and completes web tasks for you

Freemium

Visit website View details

Verdict

OpenAI Codex is listed under Coding AI and Opera Neon under AI Assistants. OpenAI Codex scores higher in FinderAtlas's editorial review (8.5 vs 7.5 out of 10), led by ease of use and value for money. Both have a free plan or trial. Only OpenAI Codex is available on Web, Linux and CLI and offers an API.

Best overall

OpenAI Codex

Software developers
Engineering teams
Enterprise engineering organizations
Open-source maintainers

Choose OpenAI Codex if

You want a tool built for delegating coding tasks to an agent.
Included with ChatGPT plans, with a free tier and an $8 Go tier.
Open-source CLI under the Apache-2.0 license.

Choose Opera Neon if

You want a tool built for Multi-tab research, delegating repetitive browser tasks, building quick web outputs, connecting external AI agents to a live browser session.
Combines chat, browser actions, research and content creation in one browser rather than a separate extension.
Neon Do shows its plan and actions in real time and can be paused or taken over.

Best for beginners: Opera Neon
Best for business: OpenAI Codex

Features

19 features compared.

Codex CLI
OpenAI Codex
Available
Opera Neon
Not available
IDE extension
OpenAI Codex
Available
Opera Neon
Not available
Desktop app
OpenAI Codex
Available
Opera Neon
Not available
Cloud tasks
OpenAI Codex
Available
Opera Neon
Not available
Code review
OpenAI Codex
Available
Opera Neon
Not available
Non-interactive mode
OpenAI Codex
Available
Opera Neon
Not available
MCP, skills and plugins
OpenAI Codex
Available
Opera Neon
Not available
Subagents and web search
OpenAI Codex
Available
Opera Neon
Not available
Session resume and images
OpenAI Codex
Available
Opera Neon
Not available
Mobile remote control
OpenAI Codex
Available
Opera Neon
Not available
Neon Do
OpenAI Codex
Not available
Opera Neon
Available
Neon Chat
OpenAI Codex
Not available
Opera Neon
Available
Neon Make
OpenAI Codex
Not available
Opera Neon
Available
Research Agents
OpenAI Codex
Not available
Opera Neon
Available
Tasks
OpenAI Codex
Not available
Opera Neon
Available
Neon Cards
OpenAI Codex
Not available
Opera Neon
Available
MCP Connector and CLI
OpenAI Codex
Not available
Opera Neon
Available
Memory and Scheduled Tasks
OpenAI Codex
Not available
Opera Neon
Available
Built-in Browser Tools
OpenAI Codex
Not available
Opera Neon
Available

Pricing

Plans as listed by each vendor. Check their sites for current prices.

Pricing model
OpenAI Codex
Freemium
Opera Neon
Freemium
Free plan
OpenAI Codex
Yes
Opera Neon
Yes
Starting price
OpenAI Codex
$0
Opera Neon
$0
Plans
OpenAI Codex
7 plans
Opera Neon
2 plans

OpenAI Codex plans

Free
$0
Quick coding tasks
- GPT-6 Luna in the desktop app
- Subject to rollout
Go
$8/month
Lightweight coding tasks
- GPT-6 Luna in the desktop app
Plus
Most popular
$20/month
Focused coding sessions
- Web
- CLI
- IDE and iOS access
- Automatic code review and Slack
- GPT-6.1 Sol and GPT-6 Luna
- Can add credits
Pro
$100/month
Plans at $100, $200 or $500 per month
- Everything in Plus
- No five-hour limit currently
- Ultrafast mode on the $500 plan
Business
$25/user/mo
2 or more users; $20 per user per month when billed annually
- Desktop and mobile apps
- Larger cloud VMs
- Add-on credits
- SAML SSO and MFA
- No training on business data by default
Enterprise & Edu
Custom/user/mo
Contact sales
- Priority request processing
- SCIM
- EKM and RBAC
- User analytics
- Compliance API audit logs
- Retention and residency controls
API Key
Pay-as-you-go/usage
Billed at OpenAI API pricing
- Codex in the CLI
- SDK and IDE extension
- No cloud features
- Models depend on the API key

Opera Neon plans

Free
$0
Download the browser with basic chat and built-in tools
- Ad blocker
- Free VPN
- Basic Neon Chat with Chat/Think/Reason modes
- Browser CLI
- MCP connector
Standard
Most popular
$19.90/month
Month-to-month subscription that unlocks the agentic features
- Neon AI agents
- Advanced chat
- Deep Research agent
- Image and video generation
- Skill cards
- Scheduled tasks
- Long memory
- Full model choice
- Google Connectors

Our ratings

Scored out of 10 by the Finder Atlas editorial team. Last reviewed October 2026.

OpenAI Codex: 8.5overall
Opera Neon: 7.5overall

OpenAI Codex leads in 2 categories and Opera Neon in 0.

Code Generation
OpenAI Codex
9.0
Opera Neon
Not rated
Agentic Autonomy
OpenAI Codex
8.8
Opera Neon
Not rated
Ease of Use
OpenAI Codex leads by 0.3
OpenAI Codex
8.3
Opera Neon
8.0
Value for Money
OpenAI Codex leads by 1.2
OpenAI Codex
8.0
Opera Neon
6.8
Ecosystem & Integrations
OpenAI Codex
8.5
Opera Neon
Not rated
Feature Depth
OpenAI Codex
Not rated
Opera Neon
8.3
Performance & Speed
OpenAI Codex
Not rated
Opera Neon
7.4
Documentation & Support
OpenAI Codex
Not rated
Opera Neon
7.2

Scores weigh documented features, plan value, platform coverage, integrations and user feedback. A missing score means we have not rated that area yet.

Pros and cons

OpenAI Codex

Pros

Included with ChatGPT plans, with a free tier and an $8 Go tier
Open-source CLI under the Apache-2.0 license
Available in the terminal, VS Code-based editors, the ChatGPT desktop app and the cloud
Supports MCP, skills, plugins and subagents
API-key option lets teams pay at API rates instead of a subscription

Cons

Plus has message limits per five hours that vary widely by model
Cloud features are not available on the API Key plan
Higher usage needs Pro, which starts at $100 per month
Free and Go plans offer only GPT-6 Luna in the desktop app

Opera Neon

Pros

Combines chat, browser actions, research and content creation in one browser rather than a separate extension.
Neon Do shows its plan and actions in real time and can be paused or taken over.
Wide model choice across OpenAI, Anthropic, Google, xAI and open-weight models on the Standard plan.
MCP connector and CLI let external agents such as Claude Code or n8n use a live browser session.
Credentials, passwords and card details are stated to stay on the device, and Opera says it does not train on user data.
Free VPN and ad blocker are included in the browser.

Cons

Full agentic features need the $19.90 per month Standard plan, higher than many AI add-ons.
Windows and macOS only; no Linux, iOS or Android version yet.
Neon Do uses cloud LLMs to plan, and page content is sent to Opera and OpenAI servers with 365-day retention.
Opera itself calls Neon an experimental agentic browser, so behaviour and plan limits may change.

Platforms

Web
OpenAI Codex
Supported
Opera Neon
Not supported
Windows
OpenAI Codex
Supported
Opera Neon
Supported
macOS
OpenAI Codex
Supported
Opera Neon
Supported
iOS
OpenAI Codex
Not supported
Opera Neon
Not supported
Android
OpenAI Codex
Not supported
Opera Neon
Not supported
API
OpenAI Codex
Supported
Opera Neon
Not supported
Browser Extension
OpenAI Codex
Not supported
Opera Neon
Not supported
Linux
OpenAI Codex
Supported
Opera Neon
Not supported
CLI
OpenAI Codex
Supported
Opera Neon
Not supported
VS Code Extension
OpenAI Codex
Supported
Opera Neon
Not supported
JetBrains Plugin
OpenAI Codex
Supported
Opera Neon
Not supported

Integrations

OpenAI Codex

8 integrations

GitHub
Slack
Visual Studio Code
Cursor
Windsurf
Xcode
JetBrains IDEs
MCP

Opera Neon

6 integrations

Google Connectors
MCP
Claude Code
Lovable
n8n
Discord

Company

Company
OpenAI Codex
Not listed
Opera Neon
Opera
Founded
OpenAI Codex
Not listed
Opera Neon
1995
Headquarters
OpenAI Codex
Not listed
Opera Neon
Oslo, Norway
Monthly users
OpenAI Codex
4M+ weekly users
Opera Neon
Not listed
Listing
OpenAI Codex
Not claimed
Opera Neon
Claimed

Featured Coding AI

Picked by our editors. Not paid placement.

Frequently asked questions

Is OpenAI Codex better than Opera Neon?

It depends on your workflow. OpenAI Codex is built for delegating coding tasks to an agent. Opera Neon is built for Multi-tab research, delegating repetitive browser tasks, building quick web outputs, connecting external AI agents to a live browser session.

What are the key feature differences between OpenAI Codex and Opera Neon?

OpenAI Codex: OpenAI's coding agent that writes, reviews and runs code from terminal, IDE, desktop or cloud. Opera Neon: Agentic AI browser that researches, navigates and completes web tasks for you.

Does OpenAI Codex or Opera Neon have a free plan?

Yes, both do. OpenAI Codex is freemium and Opera Neon is freemium, and each has a free plan or trial.

Which is cheaper, OpenAI Codex or Opera Neon?

Both can be used for free. Paid plans differ in limits and features, so compare the tiers in the pricing table above.

Verdict

Best overall

Choose OpenAI Codex if

Choose Opera Neon if

Features

Pricing

OpenAI Codex plans

Free

Go

Plus

Pro

Business

Enterprise & Edu

API Key

Opera Neon plans

Free

Standard

Our ratings

Code Generation

Agentic Autonomy

Ease of Use

Value for Money

Ecosystem & Integrations

Feature Depth

Performance & Speed

Documentation & Support

Pros and cons

OpenAI Codex

Pros

Cons

Opera Neon

Pros

Cons

Platforms

Integrations

OpenAI Codex

Opera Neon

Company

Featured Coding AI

v0 by Vercel

Claude

Claude Code

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Frequently asked questions