Side-by-side comparison · Coding & Dev Tools
GitHub Copilot vs Google Antigravity 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: Google AI Pro subscribers, and anyone who wants to try handing coding work to AI agents for free.
Pick it if: Developers and tinkerers who want a capable coding agent without a big subscription, or who want to choose their own models.
GitHub Copilot 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 | Google Antigravity | OpenCode |
|---|---|---|---|
| In one line | GitHub's AI helper: it finishes your code, reviews pull requests and takes on whole tasks. | Google's free coding app. You hand tasks to AI agents and review what they produce. | 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 | $19.99/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 | Google Antigravity | OpenCode |
|---|---|---|---|
| Overall rating | 4.0Winner | 3.9 | 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 | 4.0 | 4.5 |
| Output qualityHow good the results are before you fix them. | 3.5 | 4.0 | 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 | 3.5 | 3.0 |
Feature comparison
A tick means it does this today. A dash means we haven't checked.
| Attribute | GitHub Copilot | Google Antigravity | OpenCode |
|---|---|---|---|
| Access & platform | |||
| Free plan | Yes | Yes | Yes |
| Mobile app | Yes | No | No |
| Desktop app | Yes | Yes | Yes |
| Browser extension | – | Yes | 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 | No | Yes |
| AI abilities | |||
| Works with your files | Yes | Yes | Yes |
| Understands images | Yes | Yes | Yes |
| Makes images | No | Yes | 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 | Google Antigravity | OpenCode |
|---|---|---|---|
| Plans | Free Free Trying autocomplete and light chat. | IndividualOur pick Free Trying agent-based coding without paying. | OpenCode Free Anyone with their own model access, or happy with the free models. |
ProOur pick $10/mo Individual developers on GitHub. | Google AI Pro $19.99/mo People who already have or want the Google AI Pro bundle. | 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. | Google AI Ultra From $99.99/mo Developers who want Antigravity as a daily driver. | GoOur pick $10/mo Most people who want to code daily on a budget. | |
Max $100/mo Heavy agent-driven work. | Business (via Google Cloud) From $30/seat/mo Companies already on Google Cloud. | Go Plus $40/mo Heavy users who hit the Go limits. | |
Business and Enterprise See website Companies that need admin controls and policy management. | Enterprise Custom Companies rolling it out to a team. | ||
| 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. | Start on the free Individual tier; it is the whole point. If you hit the weekly limits and you also use Gemini for other things, Google AI Pro at $19.99 is a sensible step. Ultra only makes sense for full-time developers. | 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 | Google Antigravity | OpenCode |
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Pros and cons
| Attribute | GitHub Copilot | Google Antigravity | OpenCode |
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Who each one is for
| Attribute | GitHub Copilot | Google Antigravity | OpenCode |
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Questions people ask
Which is better, GitHub Copilot, Google Antigravity or OpenCode?
GitHub Copilot scores highest overall in our ratings (GitHub Copilot 4.0/5, Google Antigravity 3.9/5 and OpenCode 3.8/5). GitHub Copilot is best for autocomplete as you type and Handing GitHub issues to an agent. Google Antigravity is best for Trying AI coding agents for free and running several agents at once. OpenCode is best for coding with free or low-cost models and using any AI provider, including local models.
Which is cheaper, GitHub Copilot, Google Antigravity or OpenCode?
GitHub Copilot: There's a free plan, and paid plans start at $10/mo. Google Antigravity: There's a free plan, and paid plans start at $19.99/mo. OpenCode: There's a free plan, and paid plans start at Pay as you go.
Which is easier to use, GitHub Copilot, Google Antigravity 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.
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