Model Comparison

Comprehensive side-by-side analysis of model capabilities and performance

Anthropic

Claude Sonnet 4.5

Anthropic

Claude Sonnet 4.5 is a multimodal language model developed by Anthropic. It achieves strong performance with an average score of 78.0% across 10 benchmarks. It excels particularly in Tau2 Telecom (98.0%), MMMLU (89.1%), AIME 2025 (87.0%). It supports a 264K token context window for handling large documents. The model is available through 2 API providers. As a multimodal model, it can process and understand text, images, and other input formats seamlessly. Released in 2025, it represents Anthropic's latest advancement in AI technology.

xAI

Grok-3

xAI

Grok-3 is a multimodal language model developed by xAI. This model demonstrates exceptional performance with an average score of 85.7% across 5 benchmarks. It excels particularly in AIME 2024 (93.3%), AIME 2025 (93.3%), GPQA (84.6%). It supports a 136K token context window for handling large documents. The model is available through 1 API provider. As a multimodal model, it can process and understand text, images, and other input formats seamlessly. Released in 2025, it represents xAI's latest advancement in AI technology.

xAI

Grok-3

xAI

2025-02-17

Anthropic

Claude Sonnet 4.5

Anthropic

2025-09-29

7 months newer

Pricing Comparison

Cost per million tokens (USD)

Anthropic

Claude Sonnet 4.5

Input:$3.00
Output:$15.00
xAI

Grok-3

Input:$3.00
Output:$15.00

Performance Metrics

Context window and performance specifications

Anthropic

Claude Sonnet 4.5

Larger context
Max Context:264.0K
xAI

Grok-3

Max Context:136.0K

Average performance across 13 common benchmarks

Anthropic

Claude Sonnet 4.5

+27.0%
Average Score:60.0%
xAI

Grok-3

Average Score:33.0%

Performance comparison across key benchmark categories

Anthropic

Claude Sonnet 4.5

math
87.0%
general
78.0%
code
50.0%
vision
77.8%
xAI

Grok-3

math
+6.3%
93.3%
general
+11.0%
88.9%
code
+29.4%
79.4%
vision
+0.2%
78.0%
Knowledge Cutoff
Training data recency comparison

Grok-3

2024-11-17

Claude Sonnet 4.5

2025-01-31

More recent knowledge cutoff means awareness of newer technologies and frameworks

Provider Availability & Performance

Available providers and their performance metrics

Anthropic

Claude Sonnet 4.5

2 providers

Anthropic

Throughput: 42 tok/s
Latency: 0.4ms

ZeroEval

Throughput: 42 tok/s
Latency: 0.4ms
xAI

Grok-3

1 providers

xAI

Throughput: 100 tok/s
Latency: 0.7ms
Anthropic

Claude Sonnet 4.5

+27.0%
Avg Score:60.0%
Providers:2
xAI

Grok-3

Avg Score:33.0%
Providers:1