Claude 3 Opus vs GLM-5.3-Flash
Side-by-side benchmark comparison across coding, math, reasoning, speed, and pricing.
GLM-5.3-Flash by Zhipu AI wins on 4 of 4 benchmarks against Claude 3 Opus by Anthropic, which leads on 0. This head-to-head comparison covers coding, math, reasoning, speed, and pricing metrics from our benchmark data.
Category-by-Category Breakdown
Reasoning: In reasoning, GLM-5.3-Flash scores 85.8% on GPQA Diamond compared to Claude 3 Opus's 59.4%.
Context: In context, GLM-5.3-Flash scores 1.3M on Context Length compared to Claude 3 Opus's 200K.
Pricing Comparison
Claude 3 Opus costs $15.0/1M input tokens and $75.0/1M output tokens, while GLM-5.3-Flash costs $0.15/1M input and $0.50/1M output. GLM-5.3-Flash is the more affordable option for API usage.
Verdict
GLM-5.3-Flash leads across the board in affordability, making it the stronger overall choice in this comparison.
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Claude 3 Opus vs GLM-5.3-Flash — FAQ
Which is better, Claude 3 Opus or GLM-5.3-Flash?
GLM-5.3-Flash wins on more benchmarks overall (4 vs 0). However, the best choice depends on your specific needs — each model excels in different areas.
How does Claude 3 Opus compare to GLM-5.3-Flash for coding?
SWE-bench Verified data is not available for both models. Check the detailed comparison charts above for other coding-related metrics.
Is Claude 3 Opus cheaper than GLM-5.3-Flash?
Yes, GLM-5.3-Flash is cheaper. Claude 3 Opus costs $15.0/1M input and $75.0/1M output tokens. GLM-5.3-Flash costs $0.15/1M input and $0.50/1M output tokens.
Which is faster, Claude 3 Opus or GLM-5.3-Flash?
Output speed data is not available for both models. Check the speed section of the comparison above for available performance data.
What benchmarks does the Claude 3 Opus vs GLM-5.3-Flash comparison cover?
This comparison covers 4 benchmarks including GPQA Diamond, Input Cost, Output Cost, Context Length. Metrics span general intelligence, coding, math, reasoning, speed, and cost categories.