Claude Opus 4.5 vs GPT-5.2: what 10 developers chose.
404 opinions. 10 developers named a direct preference: GPT-5.2 7–3. Approval is 78% vs 68%.
GPT-5.2 wins the direct preference 7–3, but both tools score best on the same topic. Use the decision cards below to choose on workflow.
Choose Claude Opus 4.5 if you…
- Want stronger code quality and faster output
- Steer the model interactively on complex codebases
- Want the model with more discussion and higher approval
Choose GPT-5.2 if you…
- Need more usage per dollar and a generous plan
- Run long unattended agent tasks that must follow instructions
- Want a reviewer for code written by Claude
Claude Opus 4.5 and GPT-5.2: where each one wins.
Net sentiment per topic: praise minus complaints, as a share of mentions. Positive means more praise than complaints. Hover a dot for the raw counts.
Net sentiment = praise minus complaints, as a share of each tool's mentions. The dot lanes are only for readability; position is the score.
View data table
| Topic | Claude Opus 4.5 | GPT-5.2 | Mentions |
|---|---|---|---|
| Code quality | +62 | +40 | 148 / 40 |
| Reliability | +3 | 0 | 35 / 16 |
| Autonomy | +76 | +60 | 34 / 5 |
| Speed | +100 | +33 | 15 / 3 |
| Cost & pricing | +67 | +33 | 12 / 3 |
The same decision, from both sides.
Paraphrased from comments where a developer named a preference or described a switch. Each links to the original.
Picked Claude Opus 4.5 3 developers
Claude Opus 4.5 understood their thinking better than Gemini 3 and GPT-5.2 for Python and Django work.
Opus 4.5 in VS Code Copilot worked better than anything else tried, and GPT-5.2 only slightly improved on GPT-5.1.
Opus 4.5 ran circles around GPT-5.2 on a complex Haskell Lojban parser after testing all top agents.
Picked GPT-5.2 7 developers
GPT-5.2 edged out Opus 4.5 on a niche Haskell parser and Codex's $200 plan was more generous, though Opus was easier to steer.
Judged GPT-5.2 at extra-high thinking consistently better and cheaper, though they used the faster Opus 4.5 more often.
In a one-shot spec test, GPT-5.2 used 2,124 cycles and 16 minutes against Opus 4.5's 4,973 cycles and 1 hour 2 minutes.
GPT-5.2 stayed focused and finished long-running agent tasks more reliably, while Opus 4.5 stopped early and took shortcuts.
The numbers.
| Metric | Claude Opus 4.5 | GPT-5.2 |
|---|---|---|
| Approval | 78% | 68% |
| Last 90 days | 90% | – |
| Opinions | 322 | 82 |
| Developers | 259 | 77 |
| First-hand opinions | 254 | 73 |
| Direct picks | 3 | 7 |
| Type | Model | Model |
| Made by | — | — |
Related matchups.
Claude Opus 4.5 vs Claude Opus 4.6
7–4 direct picks, and a clear difference in what developers optimise for.
Claude Opus 4.5 vs Gemini 3
5–1 direct picks, and a clear difference in what developers optimise for.
Claude Opus 4.5 vs Claude Sonnet 4.5
6–0 direct picks, and a clear difference in what developers optimise for.
How to read this comparison.
Approval is the positive share of opinions that took a side, with the rank based on the lower bound of a 90% confidence interval. Direct picks count comments where a developer explicitly preferred one tool or described switching. Small samples are noisier; check the opinion counts.
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