Claude Sonnet 4 vs GLM-4-Flash
Performance benchmarks + pricing comparison — updated April 2026
Claude Sonnet 4
AnthropicAnthropic's balanced model for coding and general tasks. Best price-performance ratio in the Claude family.
| Input | $3.00/M |
| Output | $15.00/M |
| Context | 200K tokens |
| Best For | Day-to-day coding, code review, documentation |
| Benchmark | 78/100 |
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 Sonnet 4 | GLM-4-Flash | Savings |
|---|---|---|---|
| Small Script (1K lines) | $0.62 | <$0.01 | GLM-4-Flash saves $0.62 (100%) |
| Medium Feature (10K lines) | $4.66 | <$0.01 | GLM-4-Flash saves $4.65 (100%) |
| Large Project (50K lines) | $23.29 | $0.03 | GLM-4-Flash saves $23.26 (100%) |
| Code Review (5K lines) | $1.20 | <$0.01 | GLM-4-Flash saves $1.20 (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 Opus 4
AnthropicAnthropic's most powerful model. Best for complex reasoning and challenging coding tasks.
Claude 3.5 Sonnet
AnthropicPrevious generation Sonnet. Still excellent for coding tasks at the same price point.
Claude 3.5 Haiku
AnthropicFast, cost-effective model for high-volume tasks. Great for code review and simple queries.
Claude 3 Opus
AnthropicFirst generation Opus. Highest reasoning capability in the Claude 3 family.
Claude 3 Sonnet
AnthropicFirst generation Sonnet. Balanced performance for general tasks.
Claude 3 Haiku
AnthropicCheapest Claude model. Fast responses for simple tasks and basic coding.