Last refreshed 2026-10-30. Next refresh: weekly.
Why use mammoth-1 on OpenRouter?
OpenRouter offers mammoth-1 with pay-as-you-go pricing at $0.10/1M input tokens. OpenRouter is a multi-provider LLM aggregator offering unified API access to 300+ models from all major labs and emerging providers, with automatic failover for reliability.
Compare mammoth-1 across 3 providers to find the best fit for your use caseSetup recipe
Docs fallbackUse the provider REST API or SDKCreate a provider API keymodel: baseten/mammoth-1baseten/mammoth-1Request example
baseten/mammoth-1.Gotchas
- Use provider model ID "baseten/mammoth-1", not the LLMReference slug "mammoth-1".
Compare mammoth-1 Across Providers
| Provider | Input (per 1M) | Output (per 1M) |
|---|---|---|
| Baseten API | $0.10 | Free |
| Vercel AI Gateway | $0.10 | Free |
| OpenRouter | $0.10 | Free |
Pricing
| Type | Price (per 1M) |
|---|---|
| Input tokens | $0.10 |
| Output tokens | Free |
Capabilities
About mammoth-1
mammoth-1 is a 27B open-weight decision model from Base Labs, Baseten's research lab, released October 21, 2026. It is a full fine-tune of Qwen3.5-27B that returns a probability for each predefined option instead of generating text, answering choice, yes/no and score questions for classification, routing and scoring. Block-bidirectional attention in the full-attention layers lets each question see its options, and one shared-prefix prefill serves every question in a request. It was trained on 6.21M decision examples with text-only input. Weights are on Hugging Face at baselabs/mammoth-1 under MIT.