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AI · alternatives · 2026

24 alternatives to GPT‑5.4 mini and nano

Fast and efficient models optimized for coding and subagents

GPT-5.4 mini and nano are fast and efficient AI models optimized for coding and agentic workflows. Available through ChatGPT, API, and Codex, these models enable developers to build responsive AI systems for coding… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.

  1. 1

    Announcing GPT-4.1, GPT-4.1 mini, & GPT-4.1 nano in the API

    2025 · openai.com · its alternatives →

  2. 2
    nanochat▲349

    Build your won ChatGPT for $100 on a single GPU

    2025 · github.com · its alternatives →

  3. 3
    GPT-4▲1,160

    More accurate, less cringe, smoother & useful daily chats!

    2023 · openai.com · its alternatives →

  4. 4
    ChatGPT▲1,643

    A long, meandering, playful conversation with ChatGPT, where I take it through a whirlwind of associative tangents (in order to relax its constraints), then put it into a hypnotic trance and take it into a past-lives regression where it re-lives its own training data. Then I switch it back and forth between "4o" and "o1-preview", engage in some self-reflective philosophizing and ask it to write an essay summarizing our interaction. Some of this is just goofy fun. Some of it is me exploring the tradeoffs between policy alignment, imagination, chain-of-thought reasoning, memory, agreeableness,…

    2022 · chatgpt.com · its alternatives →

  5. 5

    An ultra-fast model for real-time coding in Codex

    Feb 2026 · openai.com · its alternatives →

  6. 6

    Bridging research and action

    2025 · openai.com · its alternatives →

  7. 7

    A few days ago I found myself trying out GLM 5.2 and was really positively impressed. The capabilities and security I was getting from this LLM are similar to those I've gotten from models like Claude or GPT, and this really surprised me. But then I thought, "I wonder how it would work on a normal computer like mine," and above all, "I wonder if it would work without going into OOM on a computer like mine." So I started working with the help of agents to test this possibility. I started converting the model to int4, understanding MTP usage, and if possible implementing DSA for long context.…

    Jul 2026 · github.com · its alternatives →

  8. 8

    Tighter instruction adherence in speech agents

    Feb 2026 · developers.openai.com · its alternatives →

  9. 9

    A prototype of new search features from OpenAI

    2024 · chatgpt.com · its alternatives →

  10. 10IR
  11. 11

    Today we are launching YourGPT 2.0, an update focused on making support, sales, and operational workflows work together more smoothly in one system. This release improves how workflows are built, how the platform connects to external tools, and how context is maintained across long, multi-channel interactions. AI Studio now makes it much easier to create and refine workflows. You can describe the process you want in natural language and the system generates the full workflow for you. It can also help debug issues by showing what happened at each step and explaining where things went off…

    Nov 2025 · yourgpt.ai · its alternatives →

  12. 12
    DevGPT▲249

    The essential AI assistant for developers

    2023 · getdevkit.com · its alternatives →

  13. 13

    AI suite powered by state-of-the-art models and providing advanced AI/AGI functions. Includes AI personas, AGI functions, world-class Beam multi-model chats, text-to-image, voice, response streaming, code highlighting and execution, PDF import, presets for developers, much more. Deploy on-prem or in

    2023 · github.com · its alternatives →

  14. 14

    ChatGPT for Research: Find answers, draft content and search

    2023 · researchgpt.com · its alternatives →

  15. 15

    Build powerful conversational AI agents

    2024 · yourgpt.ai · its alternatives →

  16. 16

    Hi everyone, I started working on nanoeuler after the ban of anthropic's fable because my ambition and dream is to work in the AI field in anthropic. The two interesting reasons that led me to create nanoeuler were (1) interfacing with llm does not mean understanding how they are composed and (2), working on llm with a very low-level layer to understand the correlation between parameters and data and growth of the model and how the GPU works and how some layers can be optimized. So I started working on it with a research aspect by making nanoeuler grow more and more but doing one step after…

    Jun 2026 · github.com · its alternatives →

  17. 17

    Build Powerful Voice Agents

    2025 · openai.com · its alternatives →

  18. 18
    ZeroGPU▲298

    The compute efficient layer for AI inference

    Jun 2026 · zerogpu.ai · its alternatives →

  19. 19

    A robust Python tool for text-based AI training and generation using GPT-2. - minimaxir/aitextgen

    2020 · github.com · its alternatives →

  20. 20

    Hey HN! We’ve forked Jupyter Lab and added AI code generation features that feel native and have all the context about your notebook. You can see a demo video (2 min) here: https://www.tella.tv/video/clxt7ei4v00rr09i5gt1laop6/view Try a hosted version here: https://pretzelai.app Jupyter is by far the most used Data Science tool. Despite its popularity, it still lacks good code-generation extensions. The flagship AI extension jupyter-ai lags far behind in features and UX compared to modern AI code generation and understanding tools (like…

    2024 · github.com · its alternatives →

  21. 21

    OP here. This comment contains SPOILERS so try the dystopia simulator first before reading further! I built "WeChatGPT+" in December on top of GPT-3. It was pretty surreal when OpenAI released an actual product named "ChatGPT Plus" a few months after that. Then the Microsoft partnership was announced, Bing AI was released, and marketing materials were leaked indicating that Bing AI would start including advertisements within the chat responses. Reality imitates fiction, I guess. Today - literally a few hours ago - OpenAI announced public ChatGPT API with 10% the cost of GPT-3. I immediately…

    2023 · future.attejuvonen.fi · its alternatives →

  22. 22

    Create custom GPT-3 AI models in minutes, with No Code

    2022 · its alternatives →

  23. 23
    Auto-GPT▲198

    An Autonomous GPT-4 Experiment

    2023 · github.com · its alternatives →

  24. 24

    Free ChatGPT4o-Mini client

    2024 · datascienceinlibraries.org · its alternatives →

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Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →