Is gpt-oss (OpenAI) Down?

Quickest ways to check the current status of openai.com plus recent known issues and working alternatives if it's out.

Last editorial review: 2026-04-17

How to check right now

Known issues we've tracked

Initial community quantizations (Q4 and below) showed degradation on reasoning tasks versus FP16 -- the MoE routing layers are sensitive to quantization. Q5/Q6 is the practical sweet spot for gpt-oss-120b
2025-09Reddit r/LocalLLaMA, Hugging Face discussions
gpt-oss did not make the transition to OpenAI's GPT-5.x tokenizer -- still uses the older tokenizer from the GPT-4 era. Compatible with existing tooling but slightly less token-efficient than frontier OpenAI API models
2025-08OpenAI open-models docs

Issues here are sourced from our editorial sweeps, not real-time telemetry. Newer issues may exist.

What to use if gpt-oss (OpenAI) is down

Top AIToolTier-ranked alternatives in the same category, ordered by our overall score.

About gpt-oss (OpenAI)

Tier A (8.1/10). OpenAI's FIRST open-weight models -- gpt-oss-120b (single 80GB GPU, near parity with o4-mini on reasoning) and gpt-oss-20b (runs on 16GB edge devices). Apache 2.0. Launched 2025-08-05. gpt-oss-safeguard ships in 2026 as the safety-tuned variant