AI Model Comparison
Side-by-side comparison of pricing, context window, benchmarks, capabilities, and license. Every figure comes from the developer's own pages, last checked on ; each model's page lists its sources. A figure we could not source shows as a dash.
Model A — Aleph Alpha
Kolibri is a mixture-of-experts reasoning model from Aleph Alpha for German and English, released on October 3, 2026 and built for public administration and industry, with deployment on customer-controlled infrastructure. It supports a reasoning mode and tool calling.
Model B — Anthropic
Claude Opus 5.5 is Anthropic's model for long-running agentic coding and knowledge work, released on September 22, 2026, and the model Anthropic recommends starting with for most workloads. It takes text and image input, returns text, and its thinking cannot be disabled.
| Property | Kolibri | Claude Opus 5.5 |
|---|---|---|
| Released | Oct 3, 2026 | Sep 22, 2026 |
| Developer | Aleph Alpha | Anthropic |
| Type | reasoning | reasoning |
| License | open-weight | proprietary |
| Context window | 1,048,576 | — |
| Parameters | 78B total, 3.46B active per token (Mixture-of-Experts) | — |
| Developer status | — | — |
| Input $/M tokens | — | $4.00 |
| Output $/M tokens | — | $20.00 |
Bold green values indicate the winner on that dimension where comparison is meaningful (lower price wins; bigger context wins; more open license wins; newer date wins). Prices are the ones each developer lists today; a model it no longer prices has none.
No exclusive capabilities
Programmatic access available at /api/ai/compare?a=aleph-alpha-kolibri&b=claude-opus-5-5. CORS is open. Citation guidance: /about/editorial-process.