Compare DeepSeek V4 Flash from DeepSeek and GPT Oss 20B (free) from OpenAI on key metrics including benchmarks, price, context length, and other model features. Access both models and hundreds of others through the AIHubMix API.
DeepSeek V4 Flash
GPT Oss 20B (free)(This model currently points to the older 0423 version; if you need to request the latest version, you can choose the model deepseek-v4-flash-0731)DeepSeek-V4 features an ultra-long context of one million characters and achieves leading performance domestically and in the open-source domain in agent capabilities, world knowledge, and reasoning.
Developed 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.
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DeepSeek V4 Flash accepts 1,000,000 and GPT Oss 20B (free) accepts 131,072 input tokens. Maximum output per request is 384,000 tokens on DeepSeek V4 Flash and 131,072 tokens on GPT Oss 20B (free).
DeepSeek V4 Flash accepts text input and supports tool calling, function calling, structured outputs and thinking; GPT Oss 20B (free) accepts text input and supports reasoning, tool calling and long context.
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