AI · alternatives · 2026
24 alternatives to OpenAI Open Models
gpt-oss-120b and gpt-oss-20b open-weight language models
OpenAI Open Models are Apache 2.0 licensed open-weight language models available in two sizes: gpt-oss-120b and gpt-oss-20b. Designed for developers, these models support powerful reasoning and agentic tasks. Being… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.
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GPT-4▲1,160More accurate, less cringe, smoother & useful daily chats!
2023 · openai.com · its alternatives →
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OpenAI o3-mini▲510Pushing the frontier of cost-effective reasoning
2025 · openai.com · its alternatives →
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2024 best model from xAI, now open source.
2025 · huggingface.co · its alternatives →
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OpenAI o1 API ▲458OpenAI's most advanced model, o1 API to third-party devs
2024 · developers.openai.com · its alternatives →
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Tighter instruction adherence in speech agents
Feb 2026 · developers.openai.com · its alternatives →
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Codex by OpenAI▲954OpenAI's smartest and most intuitive to use model yet
2021 · openai.com · its alternatives →
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Advanced Visual Reasoning & Agentic Tool Use
2025 · openai.com · its alternatives →
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I’ve been building Echo (https://echo.tracerml.ai/), an experiment in making one AI system out of a pool of open-weight models rather than choosing a single model and using it for every task. It started with a simple experiment. I took a group of models, including GLM-5.2, Kimi K2.7 and others, and ran them on the same evaluations. Then I measured what would happen if, for each problem, you somehow knew in advance which models would be useful and how their outputs should be combined. That hypothetical system performed substantially better than any individual model in the pool.…
Jul 2026 · its alternatives →
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Kimi K2▲345The 1T parameter open model for agentic intelligence
2025 · moonshotai.github.io · its alternatives →
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Inkling▲181Open weights 975B multimodal model built for fine-tuning
Jul 2026 · thinkingmachines.ai · its alternatives →
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Gemma 2▲279Lightweight, state-of-the-art open models from Google
2024 · blog.google · its alternatives →
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Qwen3.5▲288The 397B native multimodal agent with 17B active params
Feb 2026 · qwen.ai · its alternatives →
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Llama▲3123.1-405B: an open source model to rival GPT-4o / Claude-3.5
2024 · developer.meta.com · its alternatives →
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One unified API for all AI models like Gemini, GPT-4, DALL-E
2023 · getmerlin.in · its alternatives →
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Hi, I’m Jakub, a solo founder based in Warsaw. I’ve been building GoModel since December with a couple of contributors. It's an open-source AI gateway that sits between your app and model providers like OpenAI, Anthropic or others. I built it for my startup to solve a few problems: - track AI usage and cost per client or team - switch models without changing app code - debug request flows more easily - reduce AI spendings with exact and semantic caching How is it different? - ~17MB docker image - LiteLLM's image is more than 44x bigger ("docker.litellm.ai/berriai/litellm:latest" ~…
Apr 2026 · github.com · its alternatives →
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Hey everyone, We have been building SecureAI Tools -- an open-source application layer for ChatGPT and ChatPDF-like AI tools. It works with locally running LLMs as well as with OpenAI-compatible APIs. For local LLMs, it supports Ollama which supports all the gguf/ggml models. Currently, it has two features: Chat-with-LLM, and Chat-with-PDFs. It is optimized for self-hosting use cases and comes with basic user management features. Here are some quick demos: * Chat with documents using OpenAI's GPT3.5 model: https://www.youtube.com/watch?v=Br2D3G9O47s * Chat with documents…
2023 · github.com · its alternatives →
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Open AI o3 API▲141Advanced reasoning models with safety-first innovation.
2024 · openai.com · 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 →