Claude Opus 4 vs GLM-4-Flash
Performance benchmarks + pricing comparison — updated April 2026
Claude Opus 4
AnthropicAnthropic's most powerful model. Best for complex reasoning and challenging coding tasks.
| Input | $15.00/M |
| Output | $75.00/M |
| Context | 200K tokens |
| Best For | Complex architecture decisions, debugging hard bugs, research |
| Benchmark | 86/100 |
GLM-4-Flash
Zhipu AIZhipu AI's ultra-cheap model. Near-free pricing for high-volume Chinese and English text tasks.
| Input | $0.010/M |
| Output | $0.010/M |
| Context | 128K tokens |
| Best For | High-volume text processing, Chinese NLP tasks |
Cost Comparison by Scenario
Estimated cost per project with 30% cache hit rate. Actual costs may vary based on usage patterns.
| Scenario | Claude Opus 4 | GLM-4-Flash | Savings |
|---|---|---|---|
| Small Script (1K lines) | $3.08 | <$0.01 | GLM-4-Flash saves $3.08 (100%) |
| Medium Feature (10K lines) | $23.29 | <$0.01 | GLM-4-Flash saves $23.28 (100%) |
| Large Project (50K lines) | $116.44 | $0.03 | GLM-4-Flash saves $116.41 (100%) |
| Code Review (5K lines) | $6.02 | <$0.01 | GLM-4-Flash saves $6.02 (100%) |
Verdict
GLM-4-Flash wins on both price and performance — $0.010/M input with a benchmark score of N/A/100.
For most developers, this is the clear choice between these two models.
Compare with Other Models
Claude Sonnet 4
AnthropicAnthropic's balanced model for coding and general tasks. Best price-performance ratio in the Claude family.
Claude 3.5 Sonnet
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Claude 3.5 Haiku
AnthropicFast, cost-effective model for high-volume tasks. Great for code review and simple queries.
Claude 3 Opus
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Claude 3 Sonnet
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Claude 3 Haiku
AnthropicCheapest Claude model. Fast responses for simple tasks and basic coding.