Comprehensive side-by-side LLM comparison
Kimi K2 Thinking offers 132.1K more tokens in context window than GPT-OSS-120B. Kimi K2 Thinking is $Infinity cheaper per million tokens. Both models have their strengths depending on your specific coding needs.
OpenAI
GPT-OSS-120B, released by OpenAI in August 2025, is an open-weight large language model with 120 billion parameters distributed under the Apache 2.0 license. It represents OpenAI's entry into the open-source model space, enabling developers to self-host and fine-tune a GPT-5-generation-class model. GPT-OSS-120B targets research applications, on-premises deployments, and custom fine-tuning workflows requiring a large open-weight base model.
Moonshot AI
Kimi K2 Thinking, released by Moonshot AI on November 6, 2025, is a reasoning-focused variant of Kimi K2 with 1 trillion total parameters and 32 billion active parameters, featuring extended chain-of-thought processing for complex problem solving. It builds on K2's agentic coding strengths with additional capabilities for mathematical and scientific reasoning. Kimi K2 Thinking targets open-source deployments requiring deep, deliberate reasoning across coding and analytical domains.
3 months newer

GPT-OSS-120B
OpenAI
2025-08
Kimi K2 Thinking
Moonshot AI
2025-11-06
Cost per million tokens (USD)
GPT-OSS-120B
Kimi K2 Thinking
Context window and performance specifications
Available providers and their performance metrics
GPT-OSS-120B
Hugging Face
Kimi K2 Thinking
GPT-OSS-120B
Kimi K2 Thinking
GPT-OSS-120B
Kimi K2 Thinking
Moonshot AI