Compare anthropic/claude-sonnet-4.5 vs xai/grok-code-fast-1

Model Comparison

Metric	claude-sonnet-4.5 anthropic	grok-code-fast-1 xai
Pricing
Input Price	$3 / 1M tokens	$0.2 / 1M tokens
Output Price	$15 / 1M tokens	$1.5 / 1M tokens
Capabilities
Context Window	200K tokens	256K tokens
Capabilities	tools, reasoning	tools
Input type	text, image	text
Category Scores
Overall Average	71.4	52.4
Maths	88.0	43.3
Finance	75.3	46.0
Science	77.7	68.0
Writing	66.9	53.9
Academia	73.0	60.7
Marketing	69.2	55.2
Programming	49.8	39.4
Benchmark Tests
HLE	17.3	7.5
GPQA	83.4	72.7
SciCode	44.7	36.2
MMLU-Pro	87.5	79.3
LiveCodeBench	71.4	65.7
AA Math Index	88.0	43.3
AA Coding Index	49.8	39.4
AAII	62.7	48.6

claude-sonnet-4.5 Advantages

• Higher benchmark scores (71.4 vs 52.4)

grok-code-fast-1 Advantages

• Lower input token cost ($0.2 / 1M tokens vs $3 / 1M tokens)
• Larger context window (256K tokens vs 200K tokens)

Compare anthropic/claude-sonnet-4.5 vs xai/grok-code-fast-1