Compare · Prices checked October 30, 2026 and October 28, 2026
GitHub Copilot vs OpenAI Codex (2026)
Published starting prices: GitHub Copilot, Free; Pro $10/mo. OpenAI Codex, Free; Plus $20/mo. Side-by-side public pricing, what each does, real use cases and who each suits, all from our listings with sources. We haven't tested either hands-on.
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CodingFree tier
GitHub Copilot
GitHub's coding assistant with an agent mode in VS Code and other editors, a CLI and cloud agents that work on GitHub issues.
Subscription · 1 use caseFree; Pro $10/mo
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CodingFree tier
OpenAI Codex
OpenAI's coding agent, in a desktop app, CLI, IDE extension and on the web; included with ChatGPT plans.
Subscription · 5 use casesFree; Plus $20/mo
Short answer: GitHub Copilot vs OpenAI Codex pricing
Comparing the lowest listed monthly plans: GitHub Copilot Pro: $10/mo (includes $15/mo in GitHub AI Credits ($10 base + $5 flex)), and OpenAI Codex Go: $8/mo (lightweight tasks). OpenAI Codex lists the lower one. GitHub Copilot and OpenAI Codex also have a free plan. Plans differ in what they include, and some are per seat or billed yearly, so compare the plan details. Checked October 30, 2026 and October 28, 2026. GitHub Copilot: yes. Its Free plan is $0 (limited chat and agent use), checked October 30, 2026. OpenAI Codex: yes. Its Free plan is $0 (quick tasks), checked October 28, 2026.
Pricing side by side
| Item | ||
|---|---|---|
| Starting price | Free; Pro $10/mo | Free; Plus $20/mo |
| Pricing model | Subscription | Subscription |
| Free plan | Yes | Yes |
| Plans |
|
|
| Pricing note | Usage is metered in GitHub AI Credits (1 credit = $0.01). Each paid plan includes base credits equal to its price plus a flex allotment that GitHub says may change over time; you can set a budget for extra usage. Business, Enterprise and the new Copilot access option are from GitHub's Copilot plans docs (docs.github.com/en/copilot/get-started/plans), read 2026-10-30. | Or use your own API key and pay API prices. |
| Checked | October 30, 2026 | October 28, 2026 |
| Source | Vendor pricing page | Vendor pricing page |
Copied from each vendor's public pricing page on the date shown. "not published" means the vendor doesn't publish it; we don't guess. Prices change; confirm with the vendor.
Features and details from our listings
| Item | GitHub Copilot | OpenAI Codex |
|---|---|---|
| What it is | GitHub's coding assistant with an agent mode in VS Code and other editors, a CLI and cloud agents that work on GitHub issues. | OpenAI's coding agent, in a desktop app, CLI, IDE extension and on the web; included with ChatGPT plans. |
| Made by | GitHub | OpenAI |
| Listed under | Coding agents | Coding agents |
| Jobs it fits |
|
|
| Verified public use cases | 1 | 5 |
Use cases
GitHub Copilot
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Use caseCoding
A developer shares the VS Code setup he uses to run GitHub Copilot's agent mode with MCP servers, custom instructions and reusable prompts so it can work through tasks with little intervention.
OpenAI Codex
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Use caseCoding
A solo developer spent three months making the Steam game Solitaire: Kingdom in Chains with Claude Code and Codex alongside Photoshop, Cubase and Filmora, and puts the AI share of the work at about 30%.
Oct 2026@bigbropatchwork on X
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Use caseCoding
After running Claude Code and Codex side by side on two real projects for weeks, a builder logged one day in which Claude Code delivered 9 changes he could open and use, while Codex stopped three times over rules it had written for itself and got about 18 minutes of building done.
Oct 2026@bstuartTI on X
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Use caseCoding
A developer ran Google's open Gemma 4 model locally inside Codex CLI and wrote up how a coding agent performs without a cloud model.
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Use caseCoding
Simon Willison used Codex CLI to port the JustHTML HTML5 parser from Python to JavaScript in about 4.5 hours, using the existing html5lib test suite to check the agent's work.
Dec 2025Simon Willison's Weblog
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Use caseCoding
Semgrep's security researchers had Claude Code and OpenAI Codex hunt for vulnerabilities in real Python web apps: both found real bugs (about 20 high-severity), but more than 80% of what they flagged were false positives.
Sep 2025Semgrep blog
Use cases are summarised in our own words from the linked public post; vendor case studies are labelled. All use cases.
Who each is best for
- SubscriptionFree plan
GitHub Copilot is best for
- Teams that need to: Fix bugs and make changes in an existing codebase; Review pull requests; Hand an issue to a cloud agent.
- Budget: starts at Free; Pro $10/mo (subscription, free plan available).
- SubscriptionFree plan
OpenAI Codex is best for
- Teams that need to: Port or rewrite code against a test suite; Delegate coding tasks to run in the cloud.
- Budget: starts at Free; Plus $20/mo (subscription, free plan available).
From our listing data (jobs, public pricing); not a hands-on test. Full details: GitHub Copilot · OpenAI Codex.
FAQ
Which is cheaper, GitHub Copilot or OpenAI Codex?
Comparing the lowest listed monthly plans: GitHub Copilot Pro: $10/mo (includes $15/mo in GitHub AI Credits ($10 base + $5 flex)), and OpenAI Codex Go: $8/mo (lightweight tasks). OpenAI Codex lists the lower one. GitHub Copilot and OpenAI Codex also have a free plan. Plans differ in what they include, and some are per seat or billed yearly, so compare the plan details. Checked October 30, 2026 and October 28, 2026.
Is GitHub Copilot free? Is OpenAI Codex free?
GitHub Copilot: yes. Its Free plan is $0 (limited chat and agent use), checked October 30, 2026. OpenAI Codex: yes. Its Free plan is $0 (quick tasks), checked October 28, 2026.
How much does GitHub Copilot cost?
GitHub Copilot lists Free: $0 (limited chat and agent use); Pro: $10/mo (includes $15/mo in GitHub AI Credits ($10 base + $5 flex)); Pro+: $39/mo (includes $70/mo in GitHub AI Credits ($39 base + $31 flex)); Max: $100/mo (includes $200/mo in GitHub AI Credits ($100 base + $100 flex)); Business: $19/user/mo (per granted seat; 1,900 GitHub AI Credits per user per month, pooled across the org); Enterprise: $39/user/mo (per granted seat; 3,900 GitHub AI Credits per user per month, pooled; designed for GitHub Enterprise Cloud customers); Copilot access (eligible enterprises): $10/user/mo standalone ($0 seat charge for users with a GitHub Enterprise Cloud license; same features and models as Enterprise; all usage billed separately, no included credits). Its lowest listed monthly plan is Pro: $10/mo (includes $15/mo in GitHub AI Credits ($10 base + $5 flex)). Usage is metered in GitHub AI Credits (1 credit = $0.01). Each paid plan includes base credits equal to its price plus a flex allotment that GitHub says may change over time; you can set a budget for extra usage. Business, Enterprise and the new Copilot access option are from GitHub's Copilot plans docs (docs.github.com/en/copilot/get-started/plans), read 2026-10-30. Checked October 30, 2026 on the vendor's pricing page.
How much does OpenAI Codex cost?
OpenAI Codex lists Free: $0 (quick tasks); Go: $8/mo (lightweight tasks); Plus: $20/mo (Codex on web, CLI, IDE); Pro: from $100/mo (plans at $100, $200 or $500/mo); Business: $25/user/mo ($20 billed annually). Its lowest listed monthly plan is Go: $8/mo (lightweight tasks). Or use your own API key and pay API prices. Checked October 28, 2026 on the vendor's pricing page.
Did AITeamGuide test them?
Not hands-on. This comparison is built from each vendor's public pricing page (with the date we checked it), published product information and credited public use cases.
Can a vendor pay to win this comparison?
No. Nothing here is paid. Paid placements on AITeamGuide are always labelled "Sponsored" or "Featured" and never change a comparison or ranking.
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Work at GitHub Copilot or OpenAI Codex? Vendors can claim their listing for free or feature it with a label that says "Sponsored"; paid status never changes the order on this page. Building a different agent? List it here.
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