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Inf Retriever v1 1.5B

Feb 2025
iInf Retriever v1 1.5B
Compare in
on
self-host onlyprice
60.8MTEB English v2
Feb 2025released
1,536Dimensions
33K tokensMax input
en, zhLanguages

Rankingconfiguration unstated?

Full ranking →
1FollowIR 7B12.22Qwen 3 Embedding 4B11.63Llama Embed Nemotron 8B10.84Qwen 3 Embedding 8B10.15Octen Embedding 8B8.9
···
56SFR Embedding Mistral0.257Inf Retriever v1 1.5B0.158Jina Embeddings v5 Omni Nano0

Strong at

S
Embeddings & Retrieval#17 of 200

Run it yourself

estimate
Fits on✓ 8 GB (phone, laptop) · full quality✓ 16 GB · full quality✓ 24 GB GPU · full quality✓ 48 GB GPU · full quality✓ 80 GB GPU · full quality
LicenceApache-2.0free for commercial use

Benchmarks

in Embeddings & Retrieval
BEIR · Mean over tasks · English58.4#20
BEIR · Mean over task types · English58.4#20
BEIR · Retrieval · English58.4#20
BEIR-NL · Mean over tasks · Dutch50.1#2
BEIR-NL · Mean over task types · Dutch50.1#2
BEIR-NL · Retrieval · Dutch50.1#2
BRIGHT · Mean over tasks · English13.4#19
BRIGHT · Mean over task types · English13.4#19
BRIGHT · Retrieval · English13.4#19
MTEB Mandarin Chinese v1 · Retrieval · Mandarin Chinese73.7#26
ChemTEB · Retrieval · English77.5#5
LongEmbed · Mean over tasks · English70.2#22
LongEmbed · Mean over task types · English70.2#22
LongEmbed · Retrieval · English70.2#22
MTEB German v1 · Retrieval · German56#10
MTEB Europe v1 · Retrieval · multilingual (25 languages)63#6
MTEB Europe v1 · Instruction Reranking · English0.1#57
MTEB French v1 · Retrieval · multilingual (2 languages)64.4#8
MTEB Indic v1 · Retrieval · multilingual (14 languages)78.1#26
MTEB Law v1 · Mean over tasks · multilingual (3 languages)62#15
MTEB Law v1 · Mean over task types · multilingual (3 languages)62#15
MTEB Law v1 · Retrieval · multilingual (3 languages)62#15
MTEB Medical v1 · Retrieval · multilingual (10 languages)65#14
FollowIR · Mean over tasks · English0.1#57
FollowIR · Mean over task types · English0.1#57
FollowIR · Instruction Reranking · English0.1#57
MTEB Scandinavian v1 · Retrieval · multilingual (3 languages)66#22
CoIR · Mean over tasks · multilingual (9 languages)66.4#38
CoIR · Mean over task types · multilingual (9 languages)66.4#38
CoIR · Retrieval · multilingual (9 languages)66.4#38
MTEB Code v1 · Mean over tasks · multilingual (15 languages)68.5#32
MTEB Code v1 · Mean over task types · multilingual (15 languages)68.5#32
MTEB Code v1 · Retrieval · multilingual (15 languages)68.5#32
RTEB French beta · Mean over tasks · multilingual (2 languages)45.3#56
RTEB German beta · Mean over tasks · German62.1#38
RTEB Law beta · Mean over tasks · multilingual (4 languages)50.6#39
MTEB multilingual v2 · Retrieval · multilingual (120 languages)63#30
MTEB multilingual v2 · Instruction Reranking · English0.1#57

FAQ

How much does Inf Retriever v1 1.5B cost?›

There is no per-unit API price: self-host only.

Is Inf Retriever v1 1.5B free to use?›

There is no free API. The weights are open, so you can run it yourself.

How good is Inf Retriever v1 1.5B, and what is it best at?›

#17 of 200 in Embeddings. Strongest at: Embeddings & Retrieval.

Is Inf Retriever v1 1.5B better than SFR Embedding Mistral?›

On FollowIR · Instruction Reranking · English, Inf Retriever v1 1.5B scores 0.1 vs 0.2 — about the same.

When was Inf Retriever v1 1.5B released? Is there a newer version?›

Released 2025-02-08. It is the current version in its line.

Is Inf Retriever v1 1.5B open source?›

Yes, the weights are open (Apache-2.0 licence).

Can I run Inf Retriever v1 1.5B locally?›

The weights are open and can be self-hosted; hardware needs are not confirmed yet.

What is Inf Retriever v1 1.5B?›

Inf Retriever v1 1.5B is an open-weights embeddings & retrieval model from infly, released Feb 2025.

What are the best alternatives to Inf Retriever v1 1.5B?›

EmbeddingGemma 300M (better), Qwen 3 Embedding 4B (open weights).