head-to-head

Z.ai: GLM 5.3 Flash vs Google: Gemini 3.5 Flash Lite (batch)

Side-by-side comparison of specs, pricing, benchmark scores, and task rankings. Updated 2026-08-27.

	Z.ai: GLM 5.3 Flash	Google: Gemini 3.5 Flash Lite (batch)
Vendor	z-ai	google
Quality Score	100	100
Benchmark Score	97.4	62.3
Input Price	$0.07/M	$0.15/M
Output Price	$0.25/M	$1.25/M
Context Window	1,310,720	1,048,576
Max Output	131,072	65,536
Tool Calling	✓	✓
Structured Output	✓	✓
Reasoning Mode	✓	✓
Vision	✓	✓
Audio	-	✓
Benchmark Scores
ai_index	94.8	61.8
ai_index_agentic	96.0	44.8
ai_index_coding	100.0	81.4

Who wins by task?

Task	Z.ai: GLM 5.3 Flash	Google: Gemini 3.5 Flash Lite (batch)
SQL Generation	175	161
Code Review	170	157
Code Completion	133	133
Code Refactoring	166	156
Bug Fixing	186	166
Unit Test Generation	157	146
Code Documentation	145	140
Regex Writing	139	131
CI/CD Pipelines	147	137
Frontend Component Design	149	139
Data Analysis	176	157
CSV / Spreadsheet Cleanup	155	149
ETL Scripting	157	147
JSON Extraction	149	145
Bulk Data Labeling	135	134
OCR / Document Parsing	147	143
Table Extraction from PDFs	147	143
Long-Document Summarization	162	153
Short-Form Summarization	133	129
Blog Post Writing	143	135

Scores reflect capability match + benchmark data + pricing for each task. Methodology →