chat_template.jinja

{{ bos_token }}{%- if messages[0]['role'] == 'system' -%}
    {%- set first_user_prefix = messages[0]['content'] + '

' -%}
    {%- set loop_messages = messages[1:] -%}
{%- else -%}
    {%- set first_user_prefix = "" -%}
    {%- set loop_messages = messages -%}
{%- endif -%}
{%- for message in loop_messages -%}
    {%- if (message['role'] == 'user') != (loop.index0 % 2 == 0) -%}
        {{ raise_exception("Conversation roles must alternate user/assistant/user/assistant/...") }}
    {%- endif -%}
    {%- if (message['role'] == 'assistant') -%}
        {%- set role = "model" -%}
    {%- else -%}
        {%- set role = message['role'] -%}
    {%- endif -%}
    {{ '<|turn>' + role + '
' + (first_user_prefix if loop.first else "") }}
    {%- if message['content'] is string -%}
        {{ message['content'] | trim }}
    {%- elif message['content'] is iterable -%}
        {%- for item in message['content'] -%}
            {%- if item['type'] == 'audio' -%}
                {{ '<|audio|>' }}
            {%- elif item['type'] == 'image' -%}
                {{ '<|image|>' }}
            {%- elif item['type'] == 'video' -%}
                {{ '<|video|>' }}
            {%- elif item['type'] == 'text' -%}
                {{ item['text'] | trim }}
            {%- endif -%}
        {%- endfor -%}
    {%- else -%}
        {{ raise_exception("Invalid content type") }}
    {%- endif -%}
    {{ '<turn|>
' }}
{%- endfor -%}
{%- if add_generation_prompt -%}
    {{'<|turn>model
'}}
{%- endif -%}