Compare GPT Oss 20B (free) from OpenAI and Kimi K3 from Moonshot AI 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)
Kimi K3Developed 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.
Kimi K3 is Kimi’s flagship model for long-horizon coding and end-to-end knowledge work, with a 1M-token context window and industry-leading intelligence.
Prices are per million tokens. Time to First Token and throughput are rolling averages measured on AIHubMix.
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GPT Oss 20B (free) accepts 131,072 and Kimi K3 accepts 1,048,576 input tokens.
GPT Oss 20B (free) accepts text input and supports reasoning, tool calling and long context; Kimi K3 accepts text, image and video input and supports thinking, function calling and structured outputs.
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