gpt-oss-20bon Krater.ai
gpt-oss-20b is an open-weight 21B parameter model released by OpenAI under the Apache 2.0 license. It uses a Mixture-of-Experts (MoE) architecture with 3.6B active parameters per forward pass, optimized for
Released August 5, 2025
Specifications
gpt-oss-20b at a glance
Context
131.1K tokens
Max output
131.1K tokens
Input
Text
Output
Text
Input price
$0.03 / 1M
Output price
$0.13 / 1M
Knowledge cutoff
2024-06-30
Capabilities
What it is good at
Catalog capabilities
- Generates text responses
- Supports tool calling
- Supports structured outputs
Good for
Benchmarks
Catalog data, not Krater benchmarks.
Coding index score
20.7
Agentic index score
3.1
Intelligence index score
15.2
Design Arena dataviz rank
#107
Design Arena website rank
#122
Compare
Compare gpt-oss-20b
gpt-oss-20b vs GPT-3.5 Turbo
GPT-3.5 Turbo is OpenAI's fastest model. It can understand and generate natural language or code, and is optimized for chat and traditional completion tasks.
Open comparisongpt-oss-20b vs GPT-3.5 Turbo (older v0613)
GPT-3.5 Turbo is OpenAI's fastest model. It can understand and generate natural language or code, and is optimized for chat and traditional completion tasks.
Open comparisongpt-oss-20b vs GPT-3.5 Turbo 16k
This model offers four times the context length of gpt-3.5-turbo, allowing it to support approximately 20 pages of text in a single request at a higher cost. Training data: up
Open comparisonFAQ
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