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GPT‑5.4 Mini and Nano
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Overview
GPT-5.4 mini and nano are newly released small models that enhance performance for high-volume workloads. GPT-5.4 mini offers over 2x faster processing and improved capabilities in coding, reasoning, multimodal understanding, and tool use, nearing the performance of the larger GPT-5.4 model in various evaluations.
Summary from openai.com.
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openai.com
GPT‑5.4 Mini and Nano
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Community reactions
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Hacker News · openai.com
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Based on 5 sampled comments from this thread. Analyzed 2026-03-18.
- Praise: The GPT-5.4 Nano model demonstrates impressive speed, averaging around 200 tokens per second, which enhances its usability in real-time applications.
- Praise: Smaller model releases like GPT-5.4 Mini often show significant quality improvements, making them practical for everyday use and more accessible for developers.
- Praise: The trend of decreasing costs for mini models is encouraging, as it allows for broader adoption and integration of AI in various real-life applications.
- Concern: Users report that the GPT models struggle with understanding instructions, leading to frustrations in agentic tasks despite their conversational strengths.
- Concern: The performance of older models like GPT-5 Mini is criticized for being slow, with only 55-60 tokens per second, which hampers efficiency in practical scenarios.
- Concern: There is concern that the evaluation of models lacks rigor, relying on unscientific methods rather than structured, version-controlled assessments, which could mislead architectural decisions.