head-to-head

OpenAI: GPT-5.6 Terra vs Anthropic: Claude Haiku Latest

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

	OpenAI: GPT-5.6 Terra	Anthropic: Claude Haiku Latest
Vendor	openai	~anthropic
Quality Score	100	100
Benchmark Score	71.1	-
Input Price	$2.00/M	$1.00/M
Output Price	$12.00/M	$5.00/M
Context Window	1,050,000	200,000
Max Output	128,000	64,000
Tool Calling	✓	✓
Structured Output	✓	✓
Reasoning Mode	✓	✓
Vision	✓	✓
Audio	-	-
Benchmark Scores
ai_index	69.4	-

Who wins by task?

Task	OpenAI: GPT-5.6 Terra	Anthropic: Claude Haiku Latest
SQL Generation	140	129
Code Review	145	124
Code Completion	118	114
Code Refactoring	147	124
Bug Fixing	149	128
Unit Test Generation	132	120
Code Documentation	135	122
Regex Writing	124	118
CI/CD Pipelines	128	116
Frontend Component Design	130	122
Data Analysis	134	124
CSV / Spreadsheet Cleanup	135	125
ETL Scripting	137	120
JSON Extraction	121	122
Bulk Data Labeling	117	120
OCR / Document Parsing	134	127
Table Extraction from PDFs	134	127
Long-Document Summarization	147	125
Short-Form Summarization	116	114
Blog Post Writing	128	117

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