picksbymodel Get API access →
head-to-head

Z.ai: GLM Flash Latest vs ByteDance Seed: Seed 2.1 Turbo

Side-by-side comparison of specs, pricing, benchmark scores, and task rankings. Updated 2026-09-04.

Z.ai: GLM Flash Latest ByteDance Seed: Seed 2.1 Turbo
Vendor~z-aibytedance-seed
Quality Score100100
Input Price$0.07/M$0.50/M
Output Price$0.25/M$2.50/M
Context Window1,310,720262,144
Max Output943,718235,929
Tool Calling✓✓
Structured Output✓✓
Reasoning Mode✓✓
Vision✓✓
Audio--

Who wins by task?

TaskZ.ai: GLM Flash LatestByteDance Seed: Seed 2.1 Turbo
SQL Generation 134 130
Code Review 132 126
Code Completion 131 128
Code Refactoring 136 127
Bug Fixing 136 130
Unit Test Generation 124 121
Code Documentation 131 125
Regex Writing 119 119
CI/CD Pipelines 120 117
CSV / Spreadsheet Cleanup 134 128
ETL Scripting 128 122
JSON Extraction 131 131
Bulk Data Labeling 129 129
OCR / Document Parsing 131 128
Table Extraction from PDFs 131 128
Long-Document Summarization 138 129
Short-Form Summarization 123 123
Blog Post Writing 122 118

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

Related comparisons

Meta: Muse Spark 1.3 Contributor vs Z.ai: GLM Flash Latest Meta: Muse Spark 1.3 Contributor vs ByteDance Seed: Seed 2.1 Turbo Meta: Muse Spark 1.3 vs Z.ai: GLM Flash Latest Meta: Muse Spark 1.3 vs ByteDance Seed: Seed 2.1 Turbo Google: Gemini 3.8 Flash vs Z.ai: GLM Flash Latest Google: Gemini 3.8 Flash vs ByteDance Seed: Seed 2.1 Turbo Google: Gemini 3.8 Flash (batch) vs Z.ai: GLM Flash Latest Google: Gemini 3.8 Flash (batch) vs ByteDance Seed: Seed 2.1 Turbo