Identity
- Status
- active
- Developer ID
Aleph-Alpha/Kolibri-1- Released
- Oct 3, 2026
- Version
- Kolibri 1
- License
- apache-2.0
Aleph AlphaKolibri 1
Aleph Alpha's open-weight German-English mixture-of-experts reasoning model, released October 3, 2026, with a validated 1,048,576-token context and locally hosted OpenAI-compatible serving.
- Token context
- 1,049K tokens
- Inputs
- Text
- Outputs
- Text
- Released
- Oct 3, 2026
Providers & Pricing
0 current hosted offerings
No Hosted API Available
This record is downloadable or self-hosted. Its cost depends on the infrastructure and serving configuration, not a universal model price.
At a Glance
Model Facts
Capacity
- Token context
- 1,049K tokens
- Maximum output
- Unknown
- Total parameters
- 78.1B
- Active parameters
- 3.5B
- Knowledge cutoff
- Jun 18, 2026
Interface and Access
- Inputs
- Text
- Outputs
- Text
- API available
- No
- Open weights
- Yes
- Self-hostable
- Yes
- Reasoning
- Yes
- Vision
- No
- Tool calling
- Yes
- Capabilities
- chat, generation, reasoning, structured outputs, tools
Technical Specifications
- Native trained context
- 262,144 tokens
- Recommended serving context
- 262,144 tokens
- Architecture design
- 50-layer mixture-of-experts transformer
- Tokenizer vocabulary
- 128,000 tokens
- Supported languages
- German and English
- Reasoning effort
- none, low, medium, high
- FP8 model memory footprint
- 78 GB
- Minimum serving hardware
- 2× A100 80 GB, 2× H100 SXM5, 1× H200, 1× B200, or 1× B300
This page represents one developer model product. Dated API snapshots, serving endpoints, pricing, regions, quantizations, and service tiers attach as versioned aliases or provider details and never create duplicate public model records.
Version Lineage
PredecessorUnknown
SuccessorsUnknown
AliasesAleph-Alpha/Kolibri-1, Aleph-Alpha/Kolibri-1-BF16, Kolibri
Explicit Unknowns
- Maximum output
Primary Evidence
Sources and Observation Date
Comparable Peers
Related Model Comparisons
No Eligible Peers YetComparisons require a shared sourced modality, workload, and enough material differences.
Questions
Kolibri 1 FAQs
What is Kolibri 1?+
Aleph Alpha's open-weight German-English mixture-of-experts reasoning model, released October 3, 2026, with a validated 1,048,576-token context and locally hosted OpenAI-compatible serving. It is developed by Aleph Alpha and its current sourced lifecycle status is active.
What inputs and outputs does Kolibri 1 support?+
Kolibri 1's current record lists Text as input and Text as output.
How much context does Kolibri 1 support?+
The current record lists a 1,049K-token context window and does not report a maximum output length.
What technical specifications are published for Kolibri 1?+
Kolibri 1's developer-published specifications include native trained context: 262144 tokens; recommended serving context: 262144 tokens; architecture design: 50-layer mixture-of-experts transformer; tokenizer vocabulary: 128000 tokens; supported languages: German and English; reasoning effort: none, low, medium, high; fp8 model memory footprint: 78 GB; minimum serving hardware: 2× A100 80 GB, 2× H100 SXM5, 1× H200, 1× B200, or 1× B300.
How large is Kolibri 1?+
The current record lists 78.1B total parameters and 3.5B active parameters. Its architecture is Kolibri1ForCausalLM.
What capabilities and tasks does Kolibri 1 support?+
Kolibri 1's recorded capabilities are chat, generation, reasoning, structured outputs, and tools. Its supported tasks are coding, reasoning, and text.
Is Kolibri 1 available through an API?+
Kolibri 1 is explicitly marked as not API-available in the current record.
How much does Kolibri 1 cost through an API?+
Kolibri 1 has no verified hosted API offering, so no provider token price applies. It is a downloadable or self-hosted artifact whose cost depends on the serving infrastructure and workload.
Can Kolibri 1 be self-hosted?+
Kolibri 1 is an open-weight model. Self-hosting is supported, and the recorded license is apache-2.0.
Does Kolibri 1 have related versions or aliases?+
No predecessor is recorded. No successor is recorded. Recorded aliases are Aleph-Alpha/Kolibri-1, Aleph-Alpha/Kolibri-1-BF16, and Kolibri.