Okay. Thank you, Marco, and hello, everyone.
Our net revenues in the third quarter of 2023 were RMB 425.1 million. Despite the complex backdrop and market uncertainties that persisted, we remained steadfast in strengthening our core competitiveness through technological innovation during the quarter.
Moving forward, we remain committed to further enhancing organizational efficiency, developing globalization capability and enhancing overall agility, positioning us to deliver enduring value to our stakeholders.
Now I'd like to provide a brief overview of our financial results for the third quarter of 2023. In this quarter, our total net revenues were RMB 425.1 million compared with RMB 565.2 million in the same period of last year, primarily due to the decline in average paying users and user spending on our audio entertainment products. Cost of revenue was RMB 317.3 million in this quarter compared with RMB 376.2 million in the same period of last year, mainly attributable to the decreased revenue sharing fees, share-based compensation expenses, payment handling costs and other miscellaneous costs. Gross profit was RMB 107.8 million in the third quarter of 2023 compared with RMB 189.1 million in the same period of last year. Non-GAAP gross profit was RMB 107.9 million in this quarter compared with RMB 190.8 million in the same period of last year. Gross margin in this quarter of 2023 was 25% compared with 33% in the same period of last year. Non-GAAP gross margin in this quarter was 25% compared with 34% in the same period of last year.
Operating expenses were RMB 167.9 million in the third quarter of 2023 compared with RMB 176.6 million in the same period of last year. Research and development expenses were RMB 83.8 million in the third quarter of 2023, representing an increase of 7% year-over-year, primarily due to the increased salary and welfare benefits expenses related to increased severance pay to optimize the R&D efficiency, partially offset by the decreased expenses related to research and development services provided by third parties. Selling and marketing expenses were RMB 59.1 million in this quarter compared with RMB 71.2 million in the same period of last year, primarily attributable to decreased branding and marketing expenses. The company will monitor its discretionary advertising and promotion expenses and adjust accordingly depending on market conditions.
General and administrative expenses were RMB 25.1 million in the third quarter of 2023 compared with RMB 27.1 million in the same period of last year, mainly driven by decreased professional service fees provided by third parties, provision for litigation contingencies and other miscellaneous expenses. Operating loss was RMB 60.1 million in the third quarter of 2023 compared with operating income of RMB 12.5 million in the same period of last year. Non-GAAP operating loss was RMB 55 million in this quarter compared with non-GAAP operating income of RMB 20.2 million in the same period of last year. Other expenses were RMB 5.9 million in the third quarter of 2023 compared with other income of RMB 1.7 million in the same period of last year, mainly attributable to the remuneration fees to the depositary bank in relation to the ratio change of ADS on September 20, 2023.
Net loss was RMB 62 million in the third quarter of 2023 compared with net income of RMB 19.8 million in the same period of last year. Non-GAAP net loss was RMB 56.9 million in this quarter compared with non-GAAP net income of RMB 27.5 million in the same period of last year. Basic and diluted net loss per ADS were both RMB 11.01 in the third quarter of 2023 compared with basic and diluted net income of RMB 3.81 and RMB 3.79 per ADS in the same period of last year. Non-GAAP basic and diluted net loss per ADS were both RMB 10.07 in the third quarter of 2023 compared with non-GAAP basic and diluted net income of RMB 5.29 and RMB 5.26 per ADS in the same period of last year.
As of September 30, 2023, we had cash and cash equivalents and restricted cash of RMB 615.8 million.
Okay. This concludes all of our prepared remarks. Thank you once again for joining us today.
If you have further questions, please feel free to contact LIZHI's Investor Relations through the contact information provided on our website, ir.lizhi.fm, or Piacente Financial Communications.