Antigravity excels at one task, but Claude Code and Codex dominate everywhere else

Published Sep 19, 2026, 6:00 AM EDT Nolen began their writing career in 2019, with three years dedicated to editing the Creative section at MakeUseOf. Their expertise lies at the crossroads of technology and creativity, covering areas like photography, video editing, and graphic design. Outside of work, you'll often find Nolen diving into a good book, writing their own stories, or playing video games. Antigravity, Claude Code, and Codex are the three tools most people are deciding between right now, and although they all handle much of the same, the way they do it varies drastically. Two of them charge before you can do anything meaningful, while the third hands out frontier models on a free tier that hasn't asked for your credit card yet. This might sound like the choice is easy; just pick the free one, right? Want to stay in the loop with the latest in AI? The XDA AI Insider newsletter drops weekly with deep dives, tool recommendations, and hands-on coverage you won't find anywhere else on the site. Subscribe by modifying your newsletter preferences! Antigravity gives you a frontier agent platform for zero dollars The free tier isn't a stripped-down demo, it's the actual product Antigravity's free tier gives you access to Gemini 3.1 Pro, Gemini 3 Flash, Claude Sonnet 4.6, Claude Opus 4.6, and GPT-OSS 120B, on Windows, macOS, and Linux. The rate limits are basic, and Google has cut them a few times since launch, but the product itself isn't kneecapped. You still get unlimited Tab completions, unlimited Command requests, and the full agent orchestration stack. Claude Code's free tier gives you nothing at all. Claude Code isn't included in the free Claude plan, so the floor is Pro at $20 a month or an API key with pay-per-token billing. Codex is technically on ChatGPT Free, though OpenAI itself frames it as being suitable for "quick coding tasks," and free users can't buy credits when they run out. Where that free access in Antigravity actually pays off is the workflow… You get the Agent Manager, which lets you dispatch up to 5 parallel agents on different pieces of the same project (one refactoring auth, one writing tests, one drafting docs), running asynchronously in the background while you work on something else. You can route each agent to a different model depending on the task, so, for example, Opus 4.6 with extended thinking handles the hard debugging while Gemini 3 Flash writes repetitive code on another agent. The built-in Chrome browser lets agents open your running app, navigate through the UI, click through flows, and record video walkthroughs or screenshots proving the feature works. For frontend work, that closes the loop the other two tools can't (Claude Code and Codex can compile and run tests, but they can't confirm the OAuth flow actually renders correctly in a browser). Every task also generates Artifacts (implementation plans, task lists, diffs, browser recordings), you can leave inline comments on Google Docs-style, and the agent folds your feedback in without stopping. MCP servers plug in on top of all of it. That's the full agent-first pattern on a free tier - dispatch, walk away, come back to reviewable proof. Once you're paying anyway, Antigravity's edge shrinks fast The other two are better at the actual coding Claude Code wins on reasoning depth and multi-file work. Opus 4.6 with its 1M token context is what you reach for when a change touches a dozen files and the dependency graph matters, and Opus 5 has since taken over as the default (thinking on natively, 1M context standard), so that lead has only widened. In one Express.js refactor head-to-head, Claude Code caught a race condition Codex missed entirely. Codex pulls ahead on terminal automation by a noticeable margin. Codex CLI scores 77.3% on Terminal-Bench 2.0 against Claude Code's 65.4%, and that 12-point gap shows up in shell scripting, system admin, and CI/CD work. Antigravity has no benchmark presence in this category. Codex is also more token-efficient, finishing the same refactor at roughly a quarter of the tokens Claude Code burned through. Both tools have ecosystem depth Antigravity can't match. Codex CLI is Apache 2.0 with kernel-level sandboxing, and Claude Code has 31 programmable hook events plus thousands of MCP integrations. Antigravity's guardrails exist, but the ecosystem around them is thinner. Antigravity also has real problems inside its own lane. Opus 4.6 on Antigravity reportedly burns credits about 4x faster than Gemini, so the free-Claude pitch caps out at maybe one serious session before you're locked out. Google has also cut free-tier quotas multiple times and introduced a credits system in March 2026, so basically, if you're planning around today's number, just keep in mind that it seems to be a constantly moving target. Which each one is actually best for If you want to try agentic coding without paying, your best option is going to be Antigravity hands down. This is the only free tier category that actually hands you the full product with frontier models. So this is where I recommend experimenting, learning how to incorporate AI tools into your workflow, learning coding, whatever your objectives are, before committing to a subscription. Or, if you're not particularly after the strongest coding models running 24/7 and just want something that's decent enough to execute, then Antigravity is the one to stick with long-term. For frontend work that needs visual verification, again Antigravity. The built-in Chrome browser that navigates your running app, clicks through the flows, and records video proof the feature works is genuinely unique. Nothing else in the category ships this natively. However, depending on how much you lean on it, a Google AI subscription might make sense at this point. For refactoring across many files, or writing production code where quality has to be right the first time, Claude Code is going to be your best friend. Opus 5 with thinking on by default and a native 1M token context window is what you want when the dependency graph matters and the code has to hold up. This is the tool for work where getting it right on the first pass matters more than shipping it fast. For terminal-heavy work, DevOps, CI/CD scripting, or high-volume automated workflows where token cost matters, you'll probably want Codex. The Terminal-Bench lead gives it the edge, and the token efficiency stretches further per dollar. Codex is also the only one of the three you can fork or embed in your own tooling. Each one belongs somewhere different in your workflow I did eventually get a Google AI subscription, but it was never for Antigravity, I now just happen to enjoy more perks. If it weren't for NotebookLM and Gemini, I still would have managed to get by on the free offerings of Antigravity. But if you're ready to pay for a coding tool specifically, then Antigravity is probably not the one for you, the code-quality gap is just too wide. Google Antigravity Codex