GPT-OSS 20B
BenchLM is tracking GPT-OSS 20B, but sourced benchmark results are not published on the site yet. This page currently shows the model metadata we can verify now, and score-level benchmark coverage will appear once public evaluations land.
GPT-OSS 20B is a open weight model with a 128K token context window. It processes queries without explicit chain-of-thought reasoning, offering faster response times and lower token usage.
GPT-OSS 20B sits inside the GPT-OSS family alongside GPT-OSS 120B. This profile currently has 0 sourced benchmarks on BenchLM, so the benchmark sections below are intentionally marked as coming soon.
Its strongest category is Agentic (#75), while its weakest is Multimodal & Grounded (#107). This performance profile makes it particularly useful for coding agents, browser research, and computer-use workflows.
Ranking Distribution
Category rank across 7 benchmark categories — sorted by best rank
Category Performance
Scores across all benchmark categories (0-100 scale)
Category Breakdown
Agentic
#75Coding
#78Reasoning
#88Knowledge
#92Math
#84Multilingual
#89Multimodal
#107Inst. Following
#110Chatbot Arena Performance
Benchmark Details
Only benchmark rows with an attached exact-source record are shown here. Source-unverified manual rows and generated rows are hidden from model pages.
Compare This Model
See how GPT-OSS 20B stacks up against similar models
Frequently Asked Questions
How does GPT-OSS 20B perform overall in AI benchmarks?
BenchLM is tracking GPT-OSS 20B, but sourced benchmark coverage is still coming soon. We currently list its creator, model type, and context window while we wait for public benchmark results.
Is GPT-OSS 20B open source?
Yes, GPT-OSS 20B is an open weight model created by OpenAI, meaning it can be downloaded and run locally or fine-tuned for specific use cases.
Which sibling models are related to GPT-OSS 20B?
GPT-OSS 20B belongs to the GPT-OSS family. Related variants on BenchLM include GPT-OSS 120B.
Does GPT-OSS 20B have full benchmark coverage on BenchLM?
Not yet. GPT-OSS 20B currently has 0 published benchmark scores out of the 152 benchmarks BenchLM tracks. BenchLM only exposes non-generated public benchmark rows, so missing categories stay blank until a sourced evaluation is available.
What is the context window size of GPT-OSS 20B?
GPT-OSS 20B has a context window of 128K, which determines how much text it can process in a single interaction.
Related Resources
Don't miss the next GPT moment
Which models moved up, what’s new, and what it costs. One email a week, 3-min read.
Free. One email per week.