In 30 seconds
In this February 2026 short, Matthew Berman humorously contrasts Claude Opus 4.6 with GPT-5.3-Codex. He portrays the former as making narrow edits and the latter as investigating and changing far more of a codebase, then says both approaches work well. The short is a personal comic characterization, not a measured comparison. It shows no actual task, code changes or timing data.
- 1A narrow-edit caricatureBerman depicts Opus 4.6 as selecting the most relevant files and returning after a few minutes.
- 2A wide-ranging caricatureHe jokes that GPT-5.3-Codex examines everything, changes every file and returns with an unfamiliar codebase.
- 3Both can workHis conclusion is that both styles work well; the short provides no benchmark or reproducible coding test.
Takeaways
- Berman humorously portrays Opus 4.6 as focusing on files directly relevant to a task.
- He exaggerates GPT-5.3-Codex’s investigation and changes for comic effect.
- He says both approaches can work well, without presenting a controlled test.
Read the edited text by chapter
Two coding assistants
Berman introduces the two models as having different approaches. The setup is a humorous comparison.
OpenAI and Anthropic have released new coding models, and I want to joke about how differently they can approach a task. This is a humorous impression, not a demonstration of an actual coding task or a benchmark.
Opus and a focused edit
He acts out a narrowly scoped response from Opus 4.6. The characterization is not a measured performance claim.
I portray Claude Opus 4.6 as saying it will make the changes that are most relevant to the request and return in a few minutes. It is a caricature of a focused approach rather than a promise about how the model always behaves.
Codex and a broad investigation
He exaggerates the scope and time of a Codex task. He concludes that both approaches work well.
For GPT-5.3-Codex, I exaggerate in the other direction: it researches everything, touches every file and returns half an hour later with an unfamiliar codebase. The joke is about a much broader approach; I do not show a real run or measurements to support those specifics.
The funny part, in my experience, is that both approaches can work well. The short does not establish a winner or a general rule about how either model changes code.
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