All comparisons

GPT-4o (08-06) vs Claude 3.5 Sonnet

Side-by-side comparison of specifications, capabilities, and pricing.

	GPT-4o (08-06) OpenAI	Claude 3.5 Sonnet Anthropic
Released	2024-08-06	2024-06-20
Context window	128K	200K
Parameters	1.76T (8x222B MoE)*	70B
Architecture	mixture of experts	decoder only
License	Proprietary	Unknown
Knowledge cutoff	2023-10	2024-04
Capabilities
Multimodal
Function calling
Tool use
JSON mode
Availability
Providers	OpenAI APISalesforce Einstein Generative AI	GCP Vertex AIAnthropic ConsoleAWS Bedrock

Benchmarks

HellaSwag—96.2HumanEval—92.0Massive Multitask Language Understanding—88.7