Alternatives

Products that do what OpenAI o3 and o4-mini does

Advanced Visual Reasoning & Agentic Tool Use

1
Open AI o3 API▲141
Advanced reasoning models with safety-first innovation.
2024
2
Phi-4-reasoning-vision▲124
Open-weight 15B multimodal model for thinking and GUI agents
Mar 2026
3
DeepSeek-V3.2▲198
Reasoning-first models built for agents
Dec 2025
4
OpenAI Universe▲329
Platform for measuring and training AI agents
2016
5
GPT-5▲127
OpenAI’s most advanced model
2025
6
GLM-5▲154
Open-weights model for long-horizon agentic engineering
Feb 2026
7
Lemonfox.ai▲157
The fast, easy and cheap OpenAI alternative
2023
8
OpenAI 4o Image Generation▲249
OpenAI most advanced image generator yet
2025
9
Microsoft Phi-4▲196
Microsoft’s New Small Language Model For Complex Reasoning
2024
10
DeepSeek-R1-0528▲218
New open-source LLM that rivals o3 in coding & reasoning
2025
11
Evidently AI▲299
Open-source monitoring for machine learning models
2021
12
Bito AI▲184
Use ChatGPT and OpenAI in your IDE/CLI to save 2 hours a day
2023
13
Kimi K2 Thinking▲209
The 1T Parameters Open-Source Thinking Model - SOTA on HLE
Nov 2025
14
GPT-3 Crush▲262
Curated list of OpenAI's GPT3 demos
2020
15
Qwen3.6-35B-A3B▲124
The open sparse MoE model for agentic coding
Apr 2026
16
InternVL3▲135
Open MLLMs excelling in vision, reasoning & long context
2025
17
Zoo▲234
A free, open-source playground for AI image models
2023
18
Open Minis▲91
An on-device AI Agent that runs on your phone, open & secure
Aug 2026 · openminis.app
19
AskCodi▲230
Custom LLMs, without training. Use via openai compatible api
Nov 2025
20
Clevrr Computer▲195
Computer use but with OpenAI and Gemini models
2024
21
OpenAI Codex CLI▲192
Frontier reasoning in the terminal
2025
22
OpenAI for Alfred▲114
OpenAI text-completion workflow for Alfred
2023
23
Helix▲153
Train your own AI with open-source AI and your data
2023
24
OpenAI for Desktop▲104
Desktop client app for OpenAI, ChatGPT, GPT4
2023

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