# Kolibri 1 vs Claude Haiku 5.5 - AI Model Comparison

- Page: https://opencode.ai/data/compare/aleph-alpha/kolibri-1/anthropic/claude-haiku-5-5
- Updated: 2026-10-25T12:33:40.000Z

|  | Kolibri 1 | Claude Haiku 5.5 |
| --- | --- | --- |
| Lab | Aleph Alpha | Anthropic |
| Context window | 1M | 1M |
| Max output | - | 128K |
| Input modalities | text | text, image, pdf |
| Reasoning | Yes | Yes |
| Tool calling | Yes | Yes |
| Open weights | Yes | No |
| Release date | 2026-10-03 | 2026-10-07 |
| Input price per 1M tokens | $0.17 | $0.10 |
| Output price per 1M tokens | $0.59 | $0.50 |
| Cached input price per 1M tokens | $0.10 | $0.01 |
| OpenCode tokens: past 2 months | - | 817B |
| Share of all tokens | - | 0.1% |
| Rank by tokens last week | - | #18 |
| Unique users | - | 99K |
| Weekly retention | - | 72.2% |

Model pages: [Kolibri 1](https://opencode.ai/data/aleph-alpha/kolibri-1.md), [Claude Haiku 5.5](https://opencode.ai/data/anthropic/claude-haiku-5-5.md)

## Methodology

- Updates: Aggregated every hour. Days and weeks use UTC.
- Tokens: Input, output, reasoning, and cached tokens for each request.
- Users and sessions: Approximate counts of distinct users and OpenCode sessions.
- Cost: Session cost is the average cost per OpenCode session. Token prices are list prices from the OpenCode model catalog.
- Retention: The share of a model's users in one week who use it again the next week.
- Citation: Cite OpenCode Data (opencode.ai/data) with the update time shown at the top of the page.