Anthropic Claude 3.5 Sonnet vs OpenAI GPT-4o: Frontier AI Model Showdown
Head-to-head comparison of Claude 3.5 Sonnet and GPT-4o across code generation (HumanEval), complex reasoning, API costs, and context windows.
contextWindow
200,000 tokens
humanEvalScore
93.7% (Coding Leader)
mmluPro
88.7% (Reasoning)
inputCost
$3.00 / 1M tokens
outputCost
$15.00 / 1M tokens
multimodal
Vision + Text + Tool Calling
contextWindow
128,000 tokens
humanEvalScore
90.2% (Coding)
mmluPro
87.2% (Reasoning)
inputCost
$2.50 / 1M tokens
outputCost
$10.00 / 1M tokens
multimodal
Audio + Vision + Text Realtime
Performance Benchmarks
Overall Profile (Normalized)
Quick Verdict
Top Raw Score
Anthropic Claude 3.5 Sonnet
Best Value / Pricing
OpenAI GPT-4o
Top AI & Compute
Anthropic Claude 3.5 Sonnet
Full Specification Breakdown
| Feature / Spec | Anthropic Claude 3.5 Sonnet | OpenAI GPT-4o |
|---|---|---|
| context Window | 200,000 tokens | 128,000 tokens |
| human Eval Score | 93.7% (Coding Leader) | 90.2% (Coding) |
| mmlu Pro | 88.7% (Reasoning) | 87.2% (Reasoning) |
| input Cost | $3.00 / 1M tokens | $2.50 / 1M tokens |
| output Cost | $15.00 / 1M tokens | $10.00 / 1M tokens |
| multimodal | Vision + Text + Tool Calling | Audio + Vision + Text Realtime |
| Current Market Price | $20 USD/mo | $20 USD/mo |
Verdict
Claude 3.5 Sonnet leads the industry in software engineering, architectural reasoning, and frontend code synthesis (93.7% HumanEval). GPT-4o shines in real-time voice, lower token pricing ($2.50 vs $3.00), and speed. For pure technical workflows, Claude remains the gold standard.