head-to-head

StepFun: Step 3.7 Flash vs Anthropic: Claude Haiku Latest

Side-by-side comparison of specs, pricing, benchmark scores, and task rankings. Updated 2026-09-23.

	StepFun: Step 3.7 Flash	Anthropic: Claude Haiku Latest
Vendor	stepfun	~anthropic
Quality Score	100	100
Benchmark Score	29.1	-
Input Price	$0.20/M	$1.00/M
Output Price	$1.15/M	$5.00/M
Context Window	262,144	200,000
Max Output	230,400	64,000
Tool Calling	✓	✓
Structured Output	✓	✓
Reasoning Mode	✓	✓
Vision	✓	✓
Audio	-	-
Benchmark Scores
ai_index	32.1	-

Who wins by task?

Task	StepFun: Step 3.7 Flash	Anthropic: Claude Haiku Latest
SQL Generation	135	129
Code Review	132	124
Code Completion	129	114
Code Refactoring	132	124
Bug Fixing	136	128
Unit Test Generation	125	120
Code Documentation	129	122
Regex Writing	122	118
CI/CD Pipelines	121	116
Frontend Component Design	125	122
Data Analysis	128	124
CSV / Spreadsheet Cleanup	129	125
ETL Scripting	127	120
JSON Extraction	131	122
Bulk Data Labeling	129	120
OCR / Document Parsing	129	127
Table Extraction from PDFs	129	127
Long-Document Summarization	134	125
Short-Form Summarization	125	114
Blog Post Writing	123	117

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