Side-by-side comparison · Coding & Dev Tools
GitHub Copilot vs OpenAI Codex vs OpenCode
Everything that matters when choosing between them, in one place: our rating, what each can do, what they cost, and the trade-offs.
Comparing 3 tools, the maximum.
At a glance
Pick it if: Teams and developers whose code lives on GitHub and who want AI in the tools they already use.
Pick it if: ChatGPT subscribers who want a coding agent without paying for a second subscription.
Pick it if: Developers and tinkerers who want a capable coding agent without a big subscription, or who want to choose their own models.
OpenAI Codex scores highest overall, but OpenCode gives you more for your money. Which one is right comes down to what you value most.
Overview
| Attribute | GitHub Copilot | OpenAI Codex | OpenCode |
|---|---|---|---|
| In one line | GitHub's AI helper: it finishes your code, reviews pull requests and takes on whole tasks. | OpenAI's coding agent. Hand it a task and it works away while you do other things. | A free, open-source coding agent that works with almost any AI model, including free ones. |
| Pricing model | Freemium | Freemium | Open source |
| Starting price | $10/mo | $8/mo | Pay as you go |
| Free plan | Yes | Yes | Yes |
| Works with Claude Code | No | No | Yes |
Rating breakdown
Our scores out of 5. The higher bar in each row is highlighted.
| Attribute | GitHub Copilot | OpenAI Codex | OpenCode |
|---|---|---|---|
| Overall rating | 4.0 | 4.2Winner | 3.8 |
| Ease of useHow quickly someone non-technical gets value from it. | 4.0 | 3.5 | 3.0 |
| FeaturesHow completely it covers its own job, and how well the pieces fit together. | 4.0 | 4.5 | 4.5 |
| Output qualityHow good the results are before you fix them. | 3.5 | 4.5 | 3.5 |
| Value for moneyWhat you get for the price, including the free plan. | 4.5 | 4.5 | 5.0 |
| Speed & reliabilityHow fast it is and how often it falls over. | 4.0 | 4.0 | 3.0 |
Feature comparison
A tick means it does this today. A dash means we haven't checked.
| Attribute | GitHub Copilot | OpenAI Codex | OpenCode |
|---|---|---|---|
| Access & platform | |||
| Free plan | Yes | Yes | Yes |
| Mobile app | Yes | Yes | No |
| Desktop app | Yes | Yes | Yes |
| Browser extension | – | No | No |
| API access | – | Yes | Yes |
| Teams & business | |||
| Team workspace | Yes | Yes | No |
| Enterprise plan or SSO | Yes | Yes | Yes |
| Connects to other apps | Yes | Yes | Yes |
| Open source or self-hosted | No | Yes | Yes |
| AI abilities | |||
| Works with your files | Yes | Yes | Yes |
| Understands images | Yes | Yes | Yes |
| Makes images | No | No | No |
| Makes video | No | No | No |
| Writes code | Yes | Yes | Yes |
| Runs agents or automations | Yes | Yes | Yes |
| Learns your brand or style | Yes | Yes | – |
| Works in many languages | Yes | Yes | Yes |
| Capabilities score | 12/ 17 | 14/ 17 | 11/ 17 |
Pricing
Plans as listed on each vendor's site when we last checked. Confirm before you buy.
| Attribute | GitHub Copilot | OpenAI Codex | OpenCode |
|---|---|---|---|
| Plans | Free Free Trying autocomplete and light chat. | Free Free A quick look at what it can do. | OpenCode Free Anyone with their own model access, or happy with the free models. |
ProOur pick $10/mo Individual developers on GitHub. | Go $8/mo Occasional light tasks. | Zen Pay as you go, from a $20 top-up People who want top models without a subscription. | |
Pro+ $39/mo Developers who run agent tasks every day. | PlusOur pick $20/mo Anyone who already pays for ChatGPT. | GoOur pick $10/mo Most people who want to code daily on a budget. | |
Max $100/mo Heavy agent-driven work. | Pro From $100/mo Developers who hit the Plus limits. | Go Plus $40/mo Heavy users who hit the Go limits. | |
Business and Enterprise See website Companies that need admin controls and policy management. | Business $20/user/mo billed yearly, or $25 monthly Teams of 2 or more. | Enterprise Custom Companies rolling it out to a team. | |
Enterprise Custom Large organisations. | |||
| Which plan to pick | Pro is the sweet spot for an individual: cheap, unlimited autocomplete and enough credits for a few agent tasks a week. Only move to Pro+ if you find yourself buying extra credits every month. | If you already have ChatGPT Plus, you have Codex: just try it. If you are choosing between this and Claude Code with no existing subscription, Plus at $20 and Claude Pro at $20 cost the same, so pick whichever chat assistant you prefer. If you outgrow Plus, Pro starts at $100 and has no five-hour limit for now. The $200 tier gives new subscribers less usage than it used to, and Ultrafast mode is only on the $500 tier. | Start free. If the free models feel thin, OpenCode Go at $10 a month is the best-value upgrade in this category. Only add Zen or a Claude or OpenAI API key when you need a frontier model for a hard job, and set a spending cap when you do. |
Key features
| Attribute | GitHub Copilot | OpenAI Codex | OpenCode |
|---|---|---|---|
| Standout features |
|
|
|
Pros and cons
| Attribute | GitHub Copilot | OpenAI Codex | OpenCode |
|---|---|---|---|
| Pros |
|
|
|
| Cons |
|
|
|
Who each one is for
| Attribute | GitHub Copilot | OpenAI Codex | OpenCode |
|---|---|---|---|
| Best for |
|
|
|
| You'll find it used by |
|
|
|
Questions people ask
Which is better, GitHub Copilot, OpenAI Codex or OpenCode?
OpenAI Codex scores highest overall in our ratings (GitHub Copilot 4.0/5, OpenAI Codex 4.2/5 and OpenCode 3.8/5). GitHub Copilot is best for autocomplete as you type and Handing GitHub issues to an agent. OpenAI Codex is best for background tasks in the cloud and starting a task from your phone. OpenCode is best for coding with free or low-cost models and using any AI provider, including local models.
Which is cheaper, GitHub Copilot, OpenAI Codex or OpenCode?
GitHub Copilot: There's a free plan, and paid plans start at $10/mo. OpenAI Codex: There's a free plan, and paid plans start at $8/mo. OpenCode: There's a free plan, and paid plans start at Pay as you go.
Which is easier to use, GitHub Copilot, OpenAI Codex or OpenCode?
GitHub Copilot rates highest for ease of use in our scores. Teams and developers whose code lives on GitHub and who want AI in the tools they already use.
How we compare
Ratings are our own, from using each tool, across ease of use, features, output quality, value for money, speed & reliability.
Swap in another tool
More tools from Coding & Dev Tools in the library.
