Anthropic: Claude Haiku 5.5 vs Anthropic: Claude Sonnet 5.5 (batch)
Side-by-side comparison of specs, pricing, benchmark scores, and task rankings. Updated 2026-10-08.
| Anthropic: Claude Haiku 5.5 | Anthropic: Claude Sonnet 5.5 (batch) | |
|---|---|---|
| Vendor | anthropic | anthropic |
| Quality Score | 100 | 100 |
| Benchmark Score | 73.6 | 97.0 |
| Input Price | $0.10/M | $1.00/M |
| Output Price | $0.50/M | $5.00/M |
| Context Window | 1,000,000 | 1,000,000 |
| Max Output | 128,000 | 128,000 |
| Tool Calling | ✓ | ✓ |
| Structured Output | ✓ | ✓ |
| Reasoning Mode | ✓ | ✓ |
| Vision | ✓ | ✓ |
| Audio | - | - |
| Benchmark Scores | ||
| ai_index | 71.6 | 92.4 |
The verdict
For a sample job of 1 million input tokens and 250,000 output tokens, Claude Haiku 5.5 costs $0.23 and Claude Sonnet 5.5 (batch) costs $2.25, so Claude Haiku 5.5 is about 10.0 times cheaper for the same work.
Both read up to 1,000,000 tokens at once, roughly 1,500 pages of text.
On our blended benchmark score Claude Sonnet 5.5 (batch) leads 97.0 to 73.6.
Across the 20 tasks where they differ, Claude Haiku 5.5 scores higher on 4 (Code Completion, JSON Extraction, Bulk Data Labeling and others), Claude Sonnet 5.5 (batch) on 16 (SQL Generation, Code Review, Code Refactoring and others).
Claude Haiku 5.5 was released in October 2026 and Claude Sonnet 5.5 (batch) in September 2026.
Pick Claude Haiku 5.5 if you need lower cost; pick Claude Sonnet 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.
Who wins by task?
| Task | Anthropic: Claude Haiku 5.5 | Anthropic: Claude Sonnet 5.5 (batch) |
|---|---|---|
| SQL Generation | 142 | 144 |
| Code Review | 145 | 149 |
| Code Completion | 133 | 120 |
| Code Refactoring | 147 | 150 |
| Bug Fixing | 149 | 153 |
| Unit Test Generation | 132 | 135 |
| Code Documentation | 138 | 139 |
| Regex Writing | 127 | 128 |
| CI/CD Pipelines | 128 | 131 |
| Frontend Component Design | 130 | 133 |
| Data Analysis | 134 | 137 |
| CSV / Spreadsheet Cleanup | 136 | 137 |
| ETL Scripting | 138 | 140 |
| JSON Extraction | 131 | 122 |
| Bulk Data Labeling | 129 | 120 |
| OCR / Document Parsing | 134 | 135 |
| Table Extraction from PDFs | 134 | 135 |
| Long-Document Summarization | 149 | 152 |
| Short-Form Summarization | 127 | 119 |
| Blog Post Writing | 130 | 132 |
Scores reflect capability match + benchmark data + pricing for each task. Methodology →