head-to-head

OpenAI: GPT-6.1 Sol vs Anthropic: Claude Opus 5.5 (batch)

Side-by-side comparison of specs, pricing, benchmark scores, and task rankings. Updated 2026-09-30.

The verdict

For a sample job of 1 million input tokens and 250,000 output tokens, both cost $4.50 at current list prices.

Both take in a similar amount of text: 1,050,000 and 1,000,000 tokens, about 1,575 and 1,500 pages.

On our blended benchmark score Claude Opus 5.5 (batch) leads 100.0 to 89.2.

Across the 18 tasks where they differ, Claude Opus 5.5 (batch) on 18 (SQL Generation, Code Review, Code Completion and others).

Pick Claude Opus 5.5 (batch) if you need benchmark performance or the stronger all-round task scores.

Costs use current list prices per million tokens; page counts assume about 0.75 words per token and 500 words per page.

Task	OpenAI: GPT-6.1 Sol	Anthropic: Claude Opus 5.5 (batch)
SQL Generation	143	144
Code Review	148	150
Code Completion	119	119
Code Refactoring	149	151
Bug Fixing	152	154
Unit Test Generation	134	135
Code Documentation	137	138
Regex Writing	126	127
CI/CD Pipelines	130	131
Frontend Component Design	132	133
Data Analysis	136	138
CSV / Spreadsheet Cleanup	136	136
ETL Scripting	140	141
OCR / Document Parsing	135	135
Table Extraction from PDFs	135	135
Long-Document Summarization	150	152
Short-Form Summarization	117	118
Blog Post Writing	131	132

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