Model reference · open weights

bge-small-en

bge-small-en is an open-weight embedding model from unsloth, listed in the AxForge catalogue. AxForge can bring it up on EU-owned hardware for you on request — with the licence handled where one is required.

Embeddings unsloth 2 variants 349k downloads/mo
Request this model on EU hardware All served models Not on the shared API today — deployed on request.

About

What bge-small-en is

More details please refer to our Github: FlagEmbedding. If you are looking for a model that supports more languages, longer texts, and other retrieval methods, you can try using bge-m3. English | 中文 FlagEmbedding focuses on retrieval-augmented LLMs, consisting of the following projects currently: - Long-Context LLM: Activation Beacon - Fine-tuning of LM : LM-Cocktail - Dense Retrieval: BGE-M3, LLM Embedder, BGE Embedding - Reranker Model: BGE Reranker - Benchmark: C-MTEB News - 1/30/2024: Release BGE-M3, a new member to BGE model series! M3 stands for Multi-linguality (100+ languages), Multi-granularities (input length up to 8192), Multi-Functionality (unification of dense, lexical, multi-vec/colbert retrieval). It is the first embedding model which supports all three retrieval methods, achieving new SOTA on multi-lingual (MIRACL) and cross-lingual (MKQA) benchmarks. Technical Report and Code. :fire: - 1/9/2024: Release Activation-Beacon, an effective, efficient, compatible, and low-cost (training) method to extend the context length of LLM. Technical Report :fire: - 12/24/2023: Release LLaRA, a LLaMA-7B based dense retriever, leading to state-of-the-art performances on MS MARCO and BEIR. Model and code will be open-sourced. Please stay tuned. Technical Report :fire: - 11/23/2023: Release LM-Cocktail, a method to maintain general capabilities during fine-tuning by merging multiple language models. Technical Report :fire: - 10/12/2023: Release LLM-Embedder, a unified embedding model to support diverse retrieval augmentation needs for LLMs. Technical Report - 09/15/2023: The technical report of BGE has been released - 09/15/2023: The massive training data of BGE has been released - 09/12/2023: New models: - New reranker model: release cross-encoder models BAAI/bge-reranker-base and BAAI/bge-reranker-large, which are more powerful than embedding model. We recommend to use/fine-tune them to re-rank top-k documents returned by embedding models. - update embedding model: release bge--v1.5 embedding model to alleviate the issue of the similarity distribution, and enhance its retrieval ability without instruction. - 09/07/2023: Update fine-tune code: Add script to mine

Summarised from the published model card. Read the full card on the HuggingFace links below.

Specifications

What it is

Makerunsloth
TypeEmbedding models
Parameters (lead)33M
Context512 tokens
Variants2
Runs withsentence-transformers
Released2026-06-01
Popularity349k downloads / month
Likes2
LicenceOpen weights

How it works

How embedding models work

Your textsentence / documentEncodermaps meaningVectorlist of numbersAn embedding model turns text into a vector, so similar meanings sit close together — the basis of search and RAG.

Variants

Sizes & precisions

Open weights ship in several sizes and precisions. One page, all the variants — pick the one that fits your GPU. VRAM figures are estimates from model size.

VariantParamsPrecisionVRAMFits 16 GBWeights
bge-small-en-v1.533MBF16~0.1 GBWeights ↗
bge-small-en-v1.5-GGUFGGUFWeights ↗

Benchmarks

Reported results

As published on the model card — the maker's own numbers, not measured by AxForge.

TaskDatasetMetricScore
ClassificationMTEB AmazonCounterfactualClassification (en)accuracy73.791
ClassificationMTEB AmazonCounterfactualClassification (en)ap37.219
ClassificationMTEB AmazonCounterfactualClassification (en)f168.091
ClassificationMTEB AmazonPolarityClassificationaccuracy92.754
ClassificationMTEB AmazonPolarityClassificationap89.468
ClassificationMTEB AmazonPolarityClassificationf192.739
ClassificationMTEB AmazonReviewsClassification (en)accuracy46.986
ClassificationMTEB AmazonReviewsClassification (en)f146.559
RetrievalMTEB ArguAnamap_at_135.846
RetrievalMTEB ArguAnamap_at_1051.388
RetrievalMTEB ArguAnamap_at_10052.133
RetrievalMTEB ArguAnamap_at_100052.141
RetrievalMTEB ArguAnamap_at_347.037
RetrievalMTEB ArguAnamap_at_549.579
RetrievalMTEB ArguAnamrr_at_136.558
RetrievalMTEB ArguAnamrr_at_1051.658
RetrievalMTEB ArguAnamrr_at_10052.402
RetrievalMTEB ArguAnamrr_at_100052.41
RetrievalMTEB ArguAnamrr_at_347.345
RetrievalMTEB ArguAnamrr_at_549.798
RetrievalMTEB ArguAnandcg_at_135.846
RetrievalMTEB ArguAnandcg_at_1059.55
RetrievalMTEB ArguAnandcg_at_10062.596
RetrievalMTEB ArguAnandcg_at_100062.759

Using it via the API

Call it like any OpenAI endpoint

Once AxForge deploys unsloth-bge-small-en for you, it answers on the OpenAI-compatible API — the same base URL and keys as every other model. (unsloth-bge-small-en below is illustrative; you get the exact model name on deployment.)

$ curl -sS https://api.axforge.ai/v1/embeddings \
  -H "Authorization: Bearer $AXFORGE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"unsloth-bge-small-en","input":"text to embed"}'

Details

Languages, data & research

Languages

en

Tags

sentence-transformers pytorch onnx safetensors bert feature-extraction sentence-similarity transformers mteb en model-index text-embeddings-inference endpoints_compatible gguf

Papers

Licence

Open weights

Open weights under mit — commercial use is permitted. Deploy it on AxForge EU hardware on request. Read the licence ↗

Sources

Weights & code

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