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 2026-07-15.

	StepFun: Step 3.7 Flash	Anthropic Claude Haiku Latest
Vendor	stepfun	~anthropic
Quality Score	100	100
Benchmark Score	50.8	-
Input Price	$0.20/M	$1.00/M
Output Price	$1.15/M	$5.00/M
Context Window	256,000	200,000
Max Output	256,000	64,000
Tool Calling	✓	✓
Structured Output	✓	✓
Reasoning Mode	✓	✓
Vision	✓	✓
Audio	-	-
Benchmark Scores
ai_index	49.9	-
ai_index_agentic	35.5	-
ai_index_coding	65.3	-

Who wins by task?

Task	StepFun: Step 3.7 Flash	Anthropic Claude Haiku Latest
SQL Generation	153	129
Code Review	146	124
Code Completion	129	114
Code Refactoring	143	124
Bug Fixing	155	128
Unit Test Generation	139	120
Code Documentation	132	122
Regex Writing	129	118
CI/CD Pipelines	131	116
Frontend Component Design	136	122
Data Analysis	150	124
CSV / Spreadsheet Cleanup	141	125
ETL Scripting	137	120
JSON Extraction	142	122
Bulk Data Labeling	133	120
OCR / Document Parsing	137	127
Table Extraction from PDFs	137	127
Long-Document Summarization	142	125
Short-Form Summarization	128	114
Blog Post Writing	129	117

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