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Claude 3.5 Sonnet vs gpt-oss-120b (Comparative Analysis)

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Comparative Analysis: Claude 3.5 Sonnet vs. gpt-oss-120b
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Overview

Claude 3.5 Sonnet was released 9 months before gpt-oss-120b.
Claude 3.5 SonnetClaude 3.5 Sonnet
gpt-oss-120bgpt-oss-120b
Model Provider
The organization behind this AI's development
Anthropic logoAnthropic
OpenAI logoOpenAI
Input Context Window
Maximum input tokens this model can process at once
200K
tokens
131K
tokens
Output Token Limit
Maximum output tokens this model can generate at once
8.2K
tokens
131K
tokens
Release Date
When this model first became publicly available
October 22nd, 2024
August 5th, 2025

Capabilities & Features

Compare supported features, modalities, and advanced capabilities
Claude 3.5 Sonnet
gpt-oss-120b
Input Types
Supported input formats
📝Text🖼️Image📁File
📝Text
Output Types
Supported output formats
📝Text
📝Text
Tokenizer
Text encoding system
ClaudeGPT
Key Features
Advanced capabilities
Function CallingStructured OutputReasoning ModeContent Moderation
Function CallingStructured OutputReasoning ModeContent Moderation
Open Source
Model availability
ProprietaryAvailable on HuggingFace →

Pricing

Claude 3.5 Sonnet is roughly 42.9x more expensive compared to gpt-oss-120b for input tokens and roughly 53.6x more expensive for output tokens.
Claude 3.5 SonnetClaude 3.5 Sonnet
gpt-oss-120bgpt-oss-120b
Input Token Cost
Cost per million input tokens
$3.00
per million tokens
$0.07
per million tokens
Output Token Cost
Cost per million outut tokens
$15.00
per million tokens
$0.28
per million tokens

Benchmarks

Compare relevant benchmarks between Claude 3.5 Sonnet and gpt-oss-120b.
Claude 3.5 SonnetClaude 3.5 Sonnet
gpt-oss-120bgpt-oss-120b
MMLU
Measures knowledge across 57 subjects like law, math, history, and science
Benchmark not available.
Benchmark not available.
MMMU
Measures understanding of combined text and images across various domains
Benchmark not available.
Benchmark not available.
HellaSwag
Measures common sense reasoning by having models complete sentences about everyday situations
Benchmark not available.
Benchmark not available.

At a Glance

Quick overview of what makes Claude 3.5 Sonnet and gpt-oss-120b unique.
Anthropic logoClaude 3.5 Sonnet by Anthropic understands both text and images, can use external tools and APIs. It can handle standard conversations with its 200K token context window. Premium pricing at $3.00/M input and $15.00/M output tokens. Includes built-in content moderation for safer outputs. Released October 22nd, 2024.
OpenAI logogpt-oss-120b by OpenAI can use external tools and APIs, offers advanced reasoning, generates structured data. It can handle standard conversations with its 131K token context window. Very affordable at $0.07/M input and $0.28/M output tokens. Released August 5th, 2025.

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