AI Model Profile

gpt-oss-120b

gpt-oss-120b is OpenAI's largest open-weight gpt-oss reasoning model, described by OpenAI as fitting into a single H100 GPU.

Family
gpt-oss
Release date
Unknown
Status
Current
Context window
Unknown
Output limit
Unknown
API
no
Open weights
yes
Local/self-hosted
yes
Pricing
Open weights; self-hosting cost depends on hardware and serving stack.
Evidence state
Recheck due

Verification & Sources

Evidence state
Recheck due
Source links
4
Freshness
Needs recheck: checked June 24, 2026
Last updated
June 23, 2026
What this evidence state means
Definition
The claim was previously checked, but its review window expired or a material change may have invalidated it.
Required provenance
The prior evidence and check date are retained, together with the expiry or change signal that triggered recheck.
Owner
Kingy freshness queue owner and assigned editorial reviewer
Freshness rule
This is already outside its freshness rule. It must not be presented as current until reviewed against current evidence.
Disputes and corrections
Use “Suggest a correction” on the record. Kingy editorial reviews the cited evidence, records material corrections, and changes or removes the state when it is not supported.
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Benchmark Caveat

Benchmarks and provider capability notes are directional, not universal rankings. Results can shift with prompts, tool use, latency targets, pricing tier, safety filters, context length, and the workload mix a real team runs.

See the linked official model, docs, model-card, or pricing source for provider-published capability notes.

Best for

Local or controlled-infrastructure reasoning experiments where OpenAI-compatible open weights are required.

Skip if

Skip if you need ChatGPT/OpenAI API hosting, image input, or managed uptime from OpenAI.

Strengths

OpenAI publishes model docs, a model card, and Hugging Face weights for the gpt-oss family.

Weaknesses

Open-weight deployment still requires serving expertise, hardware planning, safety review, and workload-specific validation.

Agent suitability

Useful for agent workflows when the provider supports tool use, long context, structured outputs, or workflow-specific APIs.

Kingy AI take

Use this as a source-backed shortlist candidate, not a universal ranking. Re-check official provider docs and run a task-specific trial before production adoption.

Full Model Notes

gpt-oss-120b is OpenAI’s largest open-weight gpt-oss reasoning model, described by OpenAI as fitting into a single H100 GPU.

Coding notes

Use official docs and live evals before selecting this model for production coding workflows.

Reasoning notes

Provider capability notes are useful but should be validated on representative prompts and tools.

Creative notes

Use a small creative test set before standardizing outputs for brand, media, or customer-facing work.

Research notes

Track release notes and model lifecycle notices because availability and aliases can change.

API pricing notes

Check the official pricing page before budget decisions; Kingy does not freeze token, credit, or subscription prices in model cards.

License notes

OpenAI model card describes the gpt-oss models as available under Apache 2.0 plus usage policy terms.

Hardware requirements

OpenAI describes gpt-oss-120b as fitting into a single H100 GPU; third-party quantized and hosted options may differ.