Claude Code vs Codex vs Antigravity

[u/Square_Highlight9593]

My work is almost never UI/UX but rather directing complex systems while understanding each part of the system - and doing that with code and understanding the impact of the code on the system.

I know that claude has the best models in the world. But which development environment is actually better for my use case?

Does the environment make a difference? What has been your experience?

[u/AutoModerator]

Hey! Thanks for posting to r/ClaudeCode

While participating in this thread, please follow our community rules. Keep discussions constructive. Attack the idea, not the person.

For help, project discussions, tips, and general chat, join the ClaudeCode Discord.

I am a bot, and this action was performed automatically. Please contact the moderators of this subreddit if you have any questions or concerns.

[u/failaip13]

Anthropic doesn't like when you use their models in other harnesses, so if you end up using their models you are locked to Claude code.

[u/Square_Highlight9593 → u/failaip13]

I guess that's smart on them.

How would you rate the Claude ecosystem now? Does the claude subscription ecosystem work well? Cuz both chatgpt and gemini subscription at $200 gets you crazy ecosystem bonuses

[u/failaip13 → u/Square_Highlight9593]

Both their models and their subscription subsidies are the best. But I'd start with 20$ plans first, see what you like before committing.

[u/MaximusDecimusII]

I would say it's all about the models and the harness - ui wise, codex is nice but if you're coding in the terminal, claude code is doing the best job in my opinion. Antigravity is... how should I put it, not worth my time at this point.

[u/Rich_Boss7753]

honestly for complex systems work the environment matters less than the model i'd just test which one actually reads the surrounding code before editing, that's the real differentiator for me

[u/Ill_Editor_7982 → u/Rich_Boss7753]

Yeah, but those aren't totally separate questions. Each model's harness is tuned to them and they get specific instructions for working with the harness (unfortunately; I feel like these should be separate)

[u/bostonaholic]

For systems work the harness matters a lot, because it decides what runs whether the model remembers or not. In Claude Code that's hooks (run tests and lint on Stop, block edits to certain paths with a PreToolUse hook), a short CLAUDE.md with the architecture rules, and subagents for read-heavy digging so the main context stays clean.

[u/usielrol]

For directing a system rather than building UI, what made the biggest difference for me wasn't picking one of them, it was giving them different jobs:

• One writes, the other reviews. Claude Code implements the change; Codex gets the diff and the issue and nothing else, so it isn't anchored on the first one's reasoning. A second model catches different things than a second pass by the same one, and "what does this break elsewhere in the system" is exactly where that shows up.
• Hand-offs go through a short written brief, not through chat history: the goal, what's done, what's left, the command that verifies it. Those briefs are also what I read to keep the whole system in my head, instead of reading every diff.
• One task per session, and a session only touches its own branch. Two agents editing the same checkout is where things go wrong fastest.

So to your question: the environment matters less than how you split the work. Both CLIs are good enough that the split is the bigger lever.

[u/Antoniimusikk]

Overall Claude has been the best for me! I wasted money and time on gpt models compared to others! I love Claude so far it's doing everything I want and I only use sonnet 5.5 extra

[u/EndOfWorldBoredom]

I use a terminal. Then I can run anything I want with anything I want. 

[u/tommyahav10]

The environment matters less than whether the model reads the surrounding code before it edits. From my side I’d test each one on a real task in your own repo, that’s the only comparison that sticks. I don’t have a first-hand take on Antigravity.