OpenAI Baselines
OpenAI Baselines is a collection of open-source, high-quality reference implementations of reinforcement learning (RL) algorithms released by OpenAI.
Open Source AI
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OpenAI Codex CLI
OpenAI Codex CLI is an open-source, terminal-based coding agent developed by OpenAI and released on April 16, 2025
OpenAI Harmony
OpenAI Harmony (the harmony response format) is the structured conversation and response format used by OpenAI's open-weight gpt-oss language models, released on August 5, 2025.
Peter Steinberger
Peter Steinberger is an Austrian software engineer and entrepreneur, known as the founder of the PDF software company PSPDFKit (renamed Nutrient in 2024) and as the creator of OpenClaw, the open-source…
gpt-oss
gpt-oss is a family of open-weight large language models released by OpenAI on August 5, 2025, and OpenAI's first open-weight language models since GPT-2 in 2019.
tiktoken
tiktoken is an open source byte pair encoding (BPE) tokenizer library released by OpenAI in December 2022 that converts text into the integer token sequences its language models read and write.