Claude Sonnet 4.6 vs gpt-oss-120b

Anthropic Claude Claude Sonnet 4.6OpenAI gpt-oss-120b
VendorAnthropic ClaudeOpenAI
Context window1,000,000131,072
Max output128,000131,072
ReasoningYesNo
Tool callingYesYes
File inputYesNo
Inputtext, image, filetext
Outputtexttext
Released2026-02-17—