gpt-oss-20b vs claude-opus-4-1-20250805

Pricing, Performance & Features Comparison

Authoropenai

Context Length131K

Reasoning

Providers0

ReleasedAug 2025

Knowledge Cutoff-

License-

OpenAI medium-sized open weight model for low latency.

Input-

Output-

Latency (p50)-

Output Limit131K

Function Calling

JSON Mode

InputText

OutputText

Authoranthropic

Context Length200K

Reasoning

Providers1

ReleasedAug 2025

Knowledge Cutoff-

License-

Our most capable and intelligent model yet. Claude Opus 4.1 sets new standards in complex reasoning and advanced coding.

Input$15

Output$75

Latency (p50)2.2s

Output Limit8K

Function Calling

JSON Mode

InputText, Image

OutputText

in$15out$75cache$1.5write$19