#164
OP
GPT-4.1-nano
OpenAI
11.4 LLMBoard
OpenAI model product
GPT-OSS-20B High provides enhanced reasoning capabilities with high-effort thinking for complex problems. This variant offers deeper analysis and more thorough responses compared to the base model, making it ideal for challenging tasks that require extended reasoning. Achieves near-parity with OpenAI o4-mini on core reasoning benchmarks while running efficiently on a single 80 GB GPU, or on edge devices with just 16 GB of memory. Note: While referred to as '20b' for simplicity, it technically has 20.9B parameters.
Updated Aug 10, 2026. Default version: GPT OSS 20B High
Structured fields from the published default version.
This profile uses the latest version under this unique model that has a calculated LLMBoard score. Arena and price are excluded.
No published version under this unique model currently has enough benchmark coverage to calculate a score.
Published benchmark records for the scored version currently unavailable.
No published benchmark result is linked to the scored version.
Preference and agent-evaluation signals from published Arena datasets.
The default version has no published Arena rows, or its source alias has not been resolved.
Official vendor API PAYG pricing is summarized first. The table then lists individual provider offerings without treating their minimum as the official price.
The default version has no provider offering with current input or output token prices.
Official prices use only the vendor's configured official Provider and positive standard USD PAYG rates. Third-party offers remain explicitly labeled.
All published versions linked to this unique model. The score columns identify the version used by the current overall ranking.
| GPT OSS 20B | N/A | 20.9B | 131.1K | 32.8K | Yes | Apache 2.0 | |
| GPT OSS 20B High | N/A | 20.9B | 131.1K | 131.1K | No | Apache 2.0 |
A concise description based on the published model registry.
GPT-OSS-20B High provides enhanced reasoning capabilities with high-effort thinking for complex problems. This variant offers deeper analysis and more thorough responses compared to the base model, making it ideal for challenging tasks that require extended reasoning. Achieves near-parity with OpenAI o4-mini on core reasoning benchmarks while running efficiently on a single 80 GB GPU, or on edge devices with just 16 GB of memory. Note: While referred to as '20b' for simplicity, it technically has 20.9B parameters.
Use the benchmark, Arena and pricing sections above as separate evidence. A missing field means the current data snapshot does not support that claim.
Data snapshot: 2026-08-07. Editorial model content is not available in the backend.
Recommendations prioritize the same model type and family, then the closest published LLMBoard score.
Common questions about GPT-OSS-20B.
GPT-OSS-20B's default version was released on Aug 5, 2025.
No official standard PAYG price is currently available for GPT-OSS-20B.
GPT-OSS-20B is published under OpenAI in the model registry.
The default version has a 131.1K token context window.
No. The default version is not marked as having publicly available weights.
No published provider offering is currently linked to the default version.
No nearby ranked alternatives are currently available.