Anthropic: Claude Sonnet 5.5 (batch) vs Space Bunny Alpha
Side-by-side comparison of specs, pricing, benchmark scores, and task rankings. Updated 2026-09-29.
| Anthropic: Claude Sonnet 5.5 (batch) | Space Bunny Alpha | |
|---|---|---|
| Vendor | anthropic | stealth |
| Quality Score | 100 | 100 |
| Benchmark Score | 97.0 | - |
| Input Price | $1.00/M | Free |
| Output Price | $5.00/M | Free |
| Context Window | 1,000,000 | 1,000,000 |
| Max Output | 128,000 | 524,288 |
| Tool Calling | ✓ | ✓ |
| Structured Output | ✓ | ✓ |
| Reasoning Mode | ✓ | ✓ |
| Vision | ✓ | ✓ |
| Audio | - | - |
| Benchmark Scores | ||
| ai_index | 92.4 | - |
The verdict
For a sample job of 1 million input tokens and 250,000 output tokens, Space Bunny Alpha costs $0 and Claude Sonnet 5.5 (batch) costs $2.25, so Space Bunny Alpha is free for the same work.
Both read up to 1,000,000 tokens at once, roughly 1,500 pages of text.
Only Space Bunny Alpha offers video input.
Across the 20 tasks where they differ, Claude Sonnet 5.5 (batch) scores higher on 16 (SQL Generation, Code Review, Code Refactoring and others), Space Bunny Alpha on 4 (Code Completion, JSON Extraction, Bulk Data Labeling and others).
Pick Claude Sonnet 5.5 (batch) if you need the stronger all-round task scores; pick Space Bunny Alpha if you need lower cost or video input.
Costs use current list prices per million tokens; page counts assume about 0.75 words per token and 500 words per page.
Who wins by task?
| Task | Anthropic: Claude Sonnet 5.5 (batch) | Space Bunny Alpha |
|---|---|---|
| SQL Generation | 144 | 134 |
| Code Review | 149 | 132 |
| Code Completion | 120 | 132 |
| Code Refactoring | 150 | 136 |
| Bug Fixing | 153 | 136 |
| Unit Test Generation | 135 | 124 |
| Code Documentation | 139 | 132 |
| Regex Writing | 128 | 120 |
| CI/CD Pipelines | 131 | 120 |
| Frontend Component Design | 133 | 122 |
| Data Analysis | 137 | 124 |
| CSV / Spreadsheet Cleanup | 137 | 134 |
| ETL Scripting | 140 | 128 |
| JSON Extraction | 122 | 132 |
| Bulk Data Labeling | 120 | 130 |
| OCR / Document Parsing | 135 | 131 |
| Table Extraction from PDFs | 135 | 131 |
| Long-Document Summarization | 152 | 138 |
| Short-Form Summarization | 119 | 124 |
| Blog Post Writing | 132 | 122 |
Scores reflect capability match + benchmark data + pricing for each task. Methodology →