Tested: GPT-5.4 Nano Outperforms Opus in Planning
Lonely_Sir5876 · reddit · 2026-07-07
User tests claim that using GPT-5.4 Nano via API (rather than Codex or as an agent)—with both verbosity and reasoning set to High—outperforms Opus, Sonnet, and open-source models in generating implementation plans, analyzing code, and proposing solutions.
The author provides a reproducible method: top up around $5, connect to the API via a non-agent chat client, and attach the code files. A single run costs only a few cents, with an overall rating of 10/10.
More from Models
- GPT-6 Astra beats Factorio with enemies in 44 in-game hours at ~$4,500 API cost — liminal_bardo · 2026-09-11
- 105 hidden bugs, 2 repos: DeepSeek V4.1 Flash fixes 24 at $1.80 vs Opus 5's 27 at $51.33 — ChartsJournalX · 2026-09-11
- awesome-llm-leaderboards: an open-source directory of LLM leaderboards, pricing tables, comparison tools — Last_Establishment_1 · 2026-09-11
- Anthropic claims it works to keep eval environments unidentifiable to models — MaxKannen · 2026-09-11
- Nex N2.5 Pro released on Hugging Face with 407GB of weights — jinnyjuice · 2026-09-11
- RoMa v2 image matching model unveiled in the usual black poster — ducha_aiki · 2026-09-11