Getting empty JSON response with gpt-5-nano | OpenAI | Page 1

I am trying to use gpt-5-nano to run analysis on a transcript like so:

async with AsyncOpenAI() as client:
    analysis_response = await client.responses.create(
        model='gpt-5-nano',
        instructions=ANALYSIS_INSTRUCTIONS,
        input=f'Transcript:\n{diarized_text}',
        text={
            'format': {
                'type': 'json_schema',
                'name': 'analysis',
                'strict': True,
                'schema': ANALYSIS_SCHEMA,
            }
        },
        max_output_tokens=600,
        store=False,
    )

analysis_response.output_text always comes back as an empty string though. It says Structured Outputs are supported on https://platform.openai.com/docs/models/gpt-5-nano, but it's not working. It works fine if I use gpt-4o-mini. Does gpt-5-nano not actually support Structured Outputs?

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#Getting empty JSON response with gpt-5-nano