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Model Comparison

grok-4.1-fastvsclaude-sonnet-4.5

Model Comparison

Compare performance, benchmarks, and characteristics

grok-4.1-fast

openrouter

Context2M tokens

Input Price$0.2 / 1M tokens

Output Price$0.5 / 1M tokens

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claude-sonnet-4.5

anthropic

Context200K tokens

Input Price$3 / 1M tokens

Output Price$15 / 1M tokens

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Model Comparison

Metric	grok-4.1-fast openrouter	claude-sonnet-4.5 anthropic
Pricing
Input Price	$0.2 / 1M tokens	$3 / 1M tokens
Output Price	$0.5 / 1M tokens	$15 / 1M tokens
Capabilities
Context Window	2M tokens	200K tokens
Capabilities	tools, reasoning	tools, reasoning
Input type	text, image	text, image
Category Scores
Overall Average	65.1	66.7
Maths	89.3	88.0
Finance	63.9	65.5
Science	77.8	77.7
Writing	66.1	66.9
Academia	61.9	63.1
Marketing	65.7	67.2
Programming	30.9	38.6
Benchmark Tests
HLE	17.6	17.3
GPQA	85.3	83.4
SciCode	44.2	44.7
MMLU-Pro	85.4	87.5
LiveCodeBench	82.2	71.4
AA Math Index	89.3	88.0
AA Coding Index	30.9	38.6
AAII	38.5	42.9

grok-4.1-fast Advantages

• Lower input token cost ($0.2 / 1M tokens vs $3 / 1M tokens)
• Larger context window (2M tokens vs 200K tokens)

claude-sonnet-4.5 Advantages

• Higher benchmark scores (66.7 vs 65.1)

Compare openrouter/grok-4.1-fast vs anthropic/claude-sonnet-4.5