You can now train OpenAI gpt-oss with RL and GRPO via Unsloth. Unsloth now offers the fastest inference (3x faster), lowest VRAM usage (50% less) and longest context (8x longer) for gpt-oss RL vs. any implementation - with no accuracy degradation. Since reinforcement learning (RL) on gpt-oss isn't yet vLLM compatible, we had to rewrite the inference code from Transformers code to deliver 3x faster