Compare GPT Oss 20B (free) from OpenAI and Step 3.7 Flash from StepFun on key metrics including benchmarks, price, context length, and other model features. Access both models and hundreds of others through the AIHubMix API.
GPT Oss 20B (free)
Step 3.7 FlashDeveloped by OpenAI, gpt-oss-20b-free is an open-weight 21B parameter model released under the Apache 2.0 license. This model utilizes a Mixture-of-Experts (MoE) architecture with 3.6B active parameters per forward pass. It supports an expansive context window of up to 131,072 tokens, making it well-suited for long-context tasks.
step-3.7-flash is stepfun's flagship inference model, designed for high-complexity tasks that require deep reasoning and fast execution. It excels at decomposing multi-step problems, performing tool calls, and maintaining consistency across massive datasets. It is the preferred choice for complex workloads such as long-context agents, advanced software engineering, and end-to-end research automation.
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GPT Oss 20B (free) accepts 131,072 and Step 3.7 Flash accepts 256,000 input tokens.
GPT Oss 20B (free) accepts text input and supports reasoning, tool calling and long context; Step 3.7 Flash accepts text, image and video input.
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