DeepSeek Reasoner (R1) vs GLM-4-Flash

Performance benchmarks + pricing comparison — updated April 2026

DeepSeek Reasoner (R1)

DeepSeek

DeepSeek's reasoning model. Comparable to OpenAI's o1 but at much lower cost.

Input$0.550/M
Output$2.19/M
Context128K tokens
Best ForComplex reasoning, math, advanced coding
Benchmark72/100

GLM-4-Flash

Zhipu AI

Zhipu AI's ultra-cheap model. Near-free pricing for high-volume Chinese and English text tasks.

Input$0.010/M
Output$0.010/M
Context128K tokens
Best ForHigh-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.

ScenarioDeepSeek Reasoner (R1)GLM-4-FlashSavings
Small Script (1K lines) $0.08 <$0.01 GLM-4-Flash saves $0.08 (99%)
Medium Feature (10K lines) $0.63 <$0.01 GLM-4-Flash saves $0.63 (99%)
Large Project (50K lines) $3.15 $0.03 GLM-4-Flash saves $3.13 (99%)
Code Review (5K lines) $0.15 <$0.01 GLM-4-Flash saves $0.15 (99%)

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.

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