Challenge: Simultaneous speech translation (SimulST) systems strive for high output quality but also low latency.
Approach: They propose to train SimulST offline without additional training or adaptation . they also show offline training achieves similar or better quality compared to offline training .
Outcome: The proposed model can serve both offline and simultaneous applications without additional training or adaptation.

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Challenge: Current approaches to simultaneous speech-to-speech translation accumulate more and more latencies in later sentences when the speaker talks faster.
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Going Beyond Your Expectations in Latency Metrics for Simultaneous Speech Translation (2025.findings-acl)

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Challenge: Current evaluation practices in Simultaneous Speech Translation systems involve segmenting the input audio and its translations, calculating quality and latency metrics for each segment, and averaging the results.
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SimulS2S-LLM: Unlocking Simultaneous Inference of Speech LLMs for Speech-to-Speech Translation (2025.acl-long)

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Challenge: Simultaneous speech translation (SST) outputs translations in parallel with streaming speech input, balancing translation quality and latency.
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CA*: Addressing Evaluation Pitfalls in Computation-Aware Latency for Simultaneous Speech Translation (2025.findings-naacl)

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Challenge: Existing metrics for Simultaneous speech translation (SimulST) are inaccurately measuring latency in unsegmented streaming settings.
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SimulMT to SimulST: Adapting Simultaneous Text Translation to End-to-End Simultaneous Speech Translation (2020.aacl-main)

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Challenge: Using end-to-end Simultaneous text translation, we adapt wait-k and monotonic multihead attention to end- to-end simultaneous speech translation.
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End-to-End Simultaneous Speech Translation with Differentiable Segmentation (2023.findings-acl)

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Challenge: Existing methods to perform simultaneous speech translation always separate segmentation from the underlying model.
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Training Simultaneous Speech Translation with Robust and Random Wait-k-Tokens Strategy (2023.emnlp-main)

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Challenge: Simultaneous Speech Translation (SimulST) is a task focused on ensuring high-quality translation of speech in low-latency situations.
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InfiniSST: Simultaneous Translation of Unbounded Speech with Large Language Model (2025.findings-acl)

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Challenge: Existing models for simultaneous speech translation assume pre-segmented speech, limiting their real-world applicability.
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LLMs Can Achieve High-quality Simultaneous Machine Translation as Efficiently as Offline (2025.findings-acl)

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Challenge: Large language models perform well in offline machine translation when the complete source sentence is provided . however, in many real scenarios, the source tokens arrive in a streaming manner and simultaneous machine translation is required .
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Exploiting Multimodal Reinforcement Learning for Simultaneous Machine Translation (2021.eacl-main)

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Challenge: Existing studies on multimodality in simultaneous machine translation have highlighted the challenges for the agent to maintain good translation quality while learning an optimal translation path.
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