diff --git a/mteb/benchmarks/benchmarks/__init__.py b/mteb/benchmarks/benchmarks/__init__.py
index 862ecaa66d..0f0db150fc 100644
--- a/mteb/benchmarks/benchmarks/__init__.py
+++ b/mteb/benchmarks/benchmarks/__init__.py
@@ -6,6 +6,7 @@
     BUILT_MTEB,
     C_MTEB,
     CHEMTEB,
+    CHEMTEB_V1_1,
     CODE_RAG,
     ENCODECHKA,
     FA_MTEB,
@@ -70,6 +71,7 @@
     "BRIGHT_LONG",
     "BUILT_MTEB",
     "CHEMTEB",
+    "CHEMTEB_V1_1",
     "CODE_RAG",
     "C_MTEB",
     "ENCODECHKA",
diff --git a/mteb/benchmarks/benchmarks/benchmarks.py b/mteb/benchmarks/benchmarks/benchmarks.py
index 6b06e44122..45bb3cf302 100644
--- a/mteb/benchmarks/benchmarks/benchmarks.py
+++ b/mteb/benchmarks/benchmarks/benchmarks.py
@@ -1656,6 +1656,7 @@
 
 CHEMTEB = Benchmark(
     name="ChemTEB",
+    aliases=["ChemTEB(v1)"],
     display_name="Chemical",
     icon="https://github.com/DennisSuitters/LibreICONS/raw/2d2172d15e3c6ca03c018629d60050e4b99e5c55/svg-color/libre-gui-purge.svg",
     tasks=get_tasks(
@@ -1701,6 +1702,62 @@
 """,
 )
 
+CHEMTEB_V1_1 = Benchmark(
+    name="ChemTEB(v1.1)",
+    aliases=["ChemTEB(latest)"],
+    display_name="Chemical",
+    icon="https://github.com/DennisSuitters/LibreICONS/raw/2d2172d15e3c6ca03c018629d60050e4b99e5c55/svg-color/libre-gui-purge.svg",
+    tasks=get_tasks(
+        tasks=[
+            "PubChemSMILESBitextMining",
+            "SDSEyeProtectionClassification",
+            "SDSGlovesClassification",
+            "WikipediaBioMetChemClassification",
+            "WikipediaGreenhouseEnantiopureClassification",
+            "WikipediaSolidStateColloidalClassification",
+            "WikipediaOrganicInorganicClassification",
+            "WikipediaCryobiologySeparationClassification",
+            "WikipediaChemistryTopicsClassification",
+            "WikipediaTheoreticalAppliedClassification",
+            "WikipediaChemFieldsClassification",
+            "WikipediaLuminescenceClassification",
+            "WikipediaIsotopesFissionClassification",
+            "WikipediaSaltsSemiconductorsClassification",
+            "WikipediaBiolumNeurochemClassification",
+            "WikipediaCrystallographyAnalyticalClassification",
+            "WikipediaCompChemSpectroscopyClassification",
+            "WikipediaChemEngSpecialtiesClassification",
+            "WikipediaChemistryTopicsClustering",
+            "WikipediaSpecialtiesInChemistryClustering",
+            "PubChemAISentenceParaphrasePC",
+            "PubChemSMILESPC",
+            "PubChemSynonymPC",
+            "PubChemWikiParagraphsPC",
+            "PubChemWikiPairClassification",
+            "ChemNQRetrieval",
+            "ChemHotpotQARetrieval",
+            "ChemRxivRetrieval",
+        ],
+    ),
+    description="ChemTEB evaluates the performance of text embedding models on chemical domain data. This version adds the ChemRxivRetrieval task.",
+    reference="https://arxiv.org/abs/2412.00532",
+    citation=r"""
+@article{kasmaee2024chemteb,
+  author = {Kasmaee, Ali Shiraee and Khodadad, Mohammad and Saloot, Mohammad Arshi and Sherck, Nick and Dokas, Stephen and Mahyar, Hamidreza and Samiee, Soheila},
+  journal = {arXiv preprint arXiv:2412.00532},
+  title = {ChemTEB: Chemical Text Embedding Benchmark, an Overview of Embedding Models Performance \\& Efficiency on a Specific Domain},
+  year = {2024},
+}
+
+@article{kasmaee2025chembed,
+  author = {Kasmaee, Ali Shiraee and Khodadad, Mohammad and Astaraki, Mahdi and Saloot, Mohammad Arshi and Sherck, Nicholas and Mahyar, Hamidreza and Samiee, Soheila},
+  journal = {arXiv preprint arXiv:2508.01643},
+  title = {Chembed: Enhancing chemical literature search through domain-specific text embeddings},
+  year = {2025},
+}
+""",
+)
+
 BEIR_NL = Benchmark(
     name="BEIR-NL",
     display_name="BEIR-NL",
diff --git a/mteb/descriptive_stats/Retrieval/ChemRxivRetrieval.json b/mteb/descriptive_stats/Retrieval/ChemRxivRetrieval.json
new file mode 100644
index 0000000000..eb6c4381b0
--- /dev/null
+++ b/mteb/descriptive_stats/Retrieval/ChemRxivRetrieval.json
@@ -0,0 +1,30 @@
+{
+    "test": {
+        "num_samples": 74457,
+        "number_of_characters": 76109543,
+        "documents_text_statistics": {
+            "total_text_length": 75549698,
+            "min_text_length": 121,
+            "average_text_length": 1087.7189916063176,
+            "max_text_length": 25438,
+            "unique_texts": 69150
+        },
+        "documents_image_statistics": null,
+        "queries_text_statistics": {
+            "total_text_length": 559845,
+            "min_text_length": 57,
+            "average_text_length": 111.969,
+            "max_text_length": 224,
+            "unique_texts": 5000
+        },
+        "queries_image_statistics": null,
+        "relevant_docs_statistics": {
+            "num_relevant_docs": 5000,
+            "min_relevant_docs_per_query": 1,
+            "average_relevant_docs_per_query": 1.0,
+            "max_relevant_docs_per_query": 1,
+            "unique_relevant_docs": 5000
+        },
+        "top_ranked_statistics": null
+    }
+}
diff --git a/mteb/tasks/retrieval/eng/__init__.py b/mteb/tasks/retrieval/eng/__init__.py
index ff3460c257..247fdcce0b 100644
--- a/mteb/tasks/retrieval/eng/__init__.py
+++ b/mteb/tasks/retrieval/eng/__init__.py
@@ -18,6 +18,7 @@
 from .chat_doctor_retrieval import ChatDoctorRetrieval
 from .chem_hotpot_qa_retrieval import ChemHotpotQARetrieval
 from .chem_nq_retrieval import ChemNQRetrieval
+from .chemrxiv import ChemRxivRetrieval
 from .cirr_it2i_retrieval import CIRRIT2IRetrieval
 from .climate_fever_retrieval import (
     ClimateFEVER,
@@ -254,6 +255,7 @@
     "ChatDoctorRetrieval",
     "ChemHotpotQARetrieval",
     "ChemNQRetrieval",
+    "ChemRxivRetrieval",
     "ClimateFEVER",
     "ClimateFEVERHardNegatives",
     "ClimateFEVERHardNegativesV2",
diff --git a/mteb/tasks/retrieval/eng/chemrxiv.py b/mteb/tasks/retrieval/eng/chemrxiv.py
new file mode 100644
index 0000000000..aab8e71374
--- /dev/null
+++ b/mteb/tasks/retrieval/eng/chemrxiv.py
@@ -0,0 +1,33 @@
+from mteb.abstasks.retrieval import AbsTaskRetrieval
+from mteb.abstasks.task_metadata import TaskMetadata
+
+
+class ChemRxivRetrieval(AbsTaskRetrieval):
+    metadata = TaskMetadata(
+        name="ChemRxivRetrieval",
+        dataset={
+            "path": "BASF-AI/ChemRxivRetrieval",
+            "revision": "5377aa18f309ec440ff6325a4c2cd3362c2cb8d7",
+        },
+        description="A retrieval task based on ChemRxiv papers where queries are LLM-synthesized to match specific paragraphs.",
+        reference="https://arxiv.org/abs/2508.01643",
+        type="Retrieval",
+        category="t2t",
+        modalities=["text"],
+        eval_splits=["test"],
+        eval_langs=["eng-Latn"],
+        main_score="ndcg_at_10",
+        date=("2025-01-01", "2025-05-01"),
+        domains=["Chemistry"],
+        task_subtypes=["Question answering", "Article retrieval"],
+        license="cc-by-nc-sa-4.0",
+        annotations_creators="LM-generated and reviewed",
+        dialect=[],
+        sample_creation="found",
+        bibtex_citation="""@article{kasmaee2025chembed,
+  author = {Kasmaee, Ali Shiraee and Khodadad, Mohammad and Astaraki, Mahdi and Saloot, Mohammad Arshi and Sherck, Nicholas and Mahyar, Hamidreza and Samiee, Soheila},
+  journal = {arXiv preprint arXiv:2508.01643},
+  title = {Chembed: Enhancing chemical literature search through domain-specific text embeddings},
+  year = {2025},
+}""",
+    )