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Laguna-XS-2.1-DFlash
brainworkup/Laguna-XS-2.1-DFlash
Laguna-XS-2.1-DFlash is a machine learning model from brainworkup. Use it for the machine learning task on the model card, and read the license before you ship it in a product. It is set up for speculators. The card lists the license as openmdw-1.1.
DFlash speculator for poolside/Laguna-XS-2.1.
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.safetensors924 MB · 100%
At a glance
- Library
- speculators
- License
- openmdw-1.1
- Model type
- laguna
- Access
- Public
- Created
- Aug 4, 2026
- Updated
- Aug 4, 2026
- SHA
- 5029bc95
Base models
Model card
From the Hugging Face model README
poolside/Laguna-XS-2.1-DFlash
DFlash speculator for poolside/Laguna-XS-2.1.
Model Specifications
| Base Model | poolside/Laguna-XS-2.1 |
| Draft Architecture | 5-layer Llama-style draft model (DFlashLagunaForCausalLM) |
| Hidden Size | 2048 |
| Attention Heads | 64 query / 8 key-value, head_dim 128 |
| Sliding Window | 512 |
| Gating | Per-head |
| Proposals | Up to 15 tokens per step |
| Chat Template | poolside/Laguna-XS-2.1 (use /chat/completions endpoint) |
| Format | Safetensors (BF16) |
| License | OpenMDW-1.1 |
Deployment
[!NOTE] DFlash speculative-decoding support for Laguna XS 2.1 has not yet landed upstream. Integrations are in progress:
- vLLM — vllm-project/vllm#46853
- TRT-LLM — NVIDIA/TensorRT-LLM#15666
See the "Speculative decoding (DFlash)" notes on the Laguna XS 2.1 model card for current status.
Once vLLM support lands, pair this speculator with the base model by adding a --speculative-config block to the standard Laguna XS 2.1 serve command:
# Support in progress — see vllm-project/vllm#46853
vllm serve poolside/Laguna-XS-2.1 \
--tool-call-parser poolside_v1 \
--reasoning-parser poolside_v1 \
--enable-auto-tool-choice \
--default-chat-template-kwargs '{"enable_thinking": true}' \
--speculative-config '{"model": "poolside/Laguna-XS-2.1-DFlash", "num_speculative_tokens": 15, "method": "dflash"}'
SGLang support:
sglang serve \
--model-path poolside/Laguna-XS-2.1 \
--speculative-algorithm DFLASH \
--speculative-draft-model-path poolside/Laguna-XS-2.1-DFlash
Evaluation
Speculative-decoding throughput and mean acceptance length for the (BF16) Laguna XS 2.1 target paired with this speculator (num_speculative_tokens = 15), versus the same model without speculative decoding:
| Dataset | Baseline (tok/s/seq) | DFlash (tok/s/seq) | Speedup | Acceptance length |
|---|---|---|---|---|
| GSM8K v2 | 80.22 | 133.78 | ×1.67 | 3.55 |
| HumanEval | 95.57 | 252.59 | ×2.64 | 4.57 |
| EvalPlus | 97.68 | 192.69 | ×1.97 | 4.10 |
| Math | 73.63 | 139.84 | ×1.90 | 4.40 |
License
This model is licensed under the OpenMDW-1.1 License.
Intended and Responsible Use
Laguna-XS-2.1-DFlash is designed for software engineering and agentic coding use cases, and you are responsible for confirming that it is appropriate for your intended application. Laguna-XS-2.1-DFlash is subject to the OpenMDW-1.1 License, and should be used consistently with Poolside's Acceptable Use Policy.
Please report security vulnerabilities or safety concerns to [email protected].
References
- Library
- speculators
- Type
- laguna
- License
- openmdw-1.1
- Created
- Aug 4, 2026
- Updated
- Aug 4, 2026