April 2026 monthly summary focusing on key accomplishments in the LianjiaTech/bella-openapi project. Delivered a targeted API enhancement to enable model-version selection for the Audio Transcription feature, laying groundwork for experimentation and potential quality improvements with minimal API surface changes.

March 2026 monthly summary for LianjiaTech/bella-openapi focusing on delivering extensible TTS API, robustness improvements, and VAD event observability.

Concise monthly summary for 2025-12 focusing on key business-value deliverables, major bug fixes, overall impact, and skills demonstrated for the LianjiaTech/bella-openapi repository.

October 2025 focused on extending OpenAI and Qwen integration capabilities while maintaining platform stability through routine dependency housekeeping. Key features introduced include a OpenAI File URL Retrieval capability (FileUrl model) with a new retrieveFileUrl API, and a Qwen Flash ASR adaptor enabling audio upload, request construction, and transcription processing. Dependency version updates were performed to keep the stack current without altering core functionality. No critical bugs were reported; stability was maintained. Business impact includes streamlined file URL workflows, enhanced transcription capabilities, and improved maintainability, setting the stage for broader OpenAI/Qwen integrations and faster delivery cycles.

Month 2025-09 — Bella OpenAPI: Delivered three core capabilities across reliability, customization, and multi-speaker analytics. Key outcomes include increased robustness of real-time WebSocket transmission, enhanced speech recognition configurability with custom hot words, and a foundational speaker diarization framework enabling multi-speaker transcripts and monetization-ready features.

Monthly summary for 2025-08: Delivered two major feature sets in LianjiaTech/bella-openapi with measurable business value and technical depth. The Audio Speaker Embedding feature introduces a new embedding capability with defined protocols, request/response structures, and seamless integration into the audio controller, including pricing and logging instrumentation. The ASR enhancements add real-time hot words support (Huoshan), new hot words fields and table IDs, and protocol updates (RealTimeMessage, RealTimeAsrRequest), plus a boosting mechanism via a new boostingTableName parameter in AudioTranscriptionRequest to enable customized transcription optimization.

July 2025 monthly summary for LianjiaTech/bella-openapi: Implemented two major feature sets with accompanying bug fixes, delivering tangible business value and technical gains. 1) Image Editing and Variation Generation: added new request classes, endpoints, and adapters; extended cost calculation and logging; fixed image editing parameter handling in the OpenAI adaptor. Commits: d59878cccdc64e6ca4b1d9839f784a3479dd33a2; 5494abf4774a913f5d5072775e5051aa15ff32d5. 2) Hot Words Support for Huoshan ASR: added hot words customization for Huoshan ASR and fixed decoding of hot_words header for Huoshan onetime ASR to properly handle Chinese characters. Commits: 18915e53126528c8511b9f93c3621c1f24fdcf04; a1a1460106b2c55c74046b78fbdca67abd1f5da0. Impact: richer media processing with cost visibility, more accurate and customizable speech-to-text for Chinese, improved stability and parameter handling. Technologies demonstrated: API design, adapters, OpenAI integration, ASR decoding, logging, and cost-tracking. Business value: faster feature delivery, better user experience for multilingual workflows, and clearer cost metrics.

June 2025 monthly performance for LianjiaTech/bella-openapi: delivered cost-aware transcription capabilities and cross-provider integration, establishing a scalable adaptor pattern and improved cost modeling to support hourly rates and usage-based billing, enabling future provider expansions.

February 2025 (Month: 2025-02) monthly summary for LianjiaTech/bella-openapi. Delivered a focused improvement to Audio Transcription Output Results Handling, including refactoring of output results processing in audio transcription and queue services, clarification of JSON property names, and a new retrieval pathway using output file IDs to support more complex task outputs. This work reduces retrieval latency, improves API clarity, and strengthens downstream integrations. No separate bug fixes were recorded this month; enhancements targeted reliability and consistency across the transcription pipeline.

December 2024 — Delivered Audio Transcription API for Bella OpenAPI, enabling endpoints to submit audio for transcription and to retrieve transcription results. Implemented asynchronous task processing using KeQueueService to manage transcription workloads at scale. This feature enhances customer workflows by enabling automated audio-to-text, reduces manual transcription effort, and improves integration capabilities for downstream analytics. Delivered in LianjiaTech/bella-openapi (commit 87fd2065ae9a5a8baf1ff59fb3cf1a85cee5e2d3, feat audio transcriptions).