Compare openai/gpt-5-nano vs anthropic/claude-opus-4.5

Model Comparison

Metric	gpt-5-nano openai	claude-opus-4.5 anthropic
Pricing
Input Price	$0.05 / 1M tokens	$5 / 1M tokens
Output Price	$0.4 / 1M tokens	$25 / 1M tokens
Capabilities
Context Window	400K tokens	200K tokens
Capabilities	tools
Input type	text, image	text, image
Category Scores
Overall Average	62.3	76.6
Maths	83.7	91.3
Finance	67.3	80.5
Science	65.0	81.3
Writing	57.8	71.2
Academia	59.3	78.2
Marketing	60.8	73.3
Programming	42.3	60.2
Benchmark Tests
HLE	8.2	28.4
GPQA	67.6	86.6
SciCode	36.6	49.5
MMLU-Pro	78.0	89.5
LiveCodeBench	78.9	87.1
AA Math Index	83.7	91.3
AA Coding Index	42.3	60.2
AAII	51.0	69.8

gpt-5-nano Advantages

• Lower input token cost ($0.05 / 1M tokens vs $5 / 1M tokens)
• Larger context window (400K tokens vs 200K tokens)

claude-opus-4.5 Advantages

• Higher benchmark scores (76.6 vs 62.3)

Compare openai/gpt-5-nano vs anthropic/claude-opus-4.5