chat_template.jinja

{%- if not add_generation_prompt is defined -%}

    {%- set add_generation_prompt = false -%}

{%- endif -%}

{%- if not enable_thinking is defined -%}

    {%- set enable_thinking = false -%}

{%- endif -%}

{%- if not keep_all_reasoning is defined -%}

    {%- set keep_all_reasoning = false -%}

{%- endif -%}

{%- macro render_extra_keys(json_dict, handled_keys) -%}

    {%- if json_dict is mapping %}

        {%- for json_key in json_dict if json_key not in handled_keys %}

            {%- if json_dict[json_key] is mapping or (json_dict[json_key] is sequence and json_dict[json_key] is not string) %}

                {{- '\n<' ~ json_key ~ '>' ~ (json_dict[json_key] | tojson | safe) ~ '</' ~ json_key ~ '>' }}

            {%- else %}

                {{-'\n<' ~ json_key ~ '>' ~ (json_dict[json_key] | string) ~ '</' ~ json_key ~ '>' }}

            {%- endif %}

        {%- endfor %}

    {%- endif %}

{%- endmacro -%}

{%- if messages[0]["role"] == "system" %}

    {%- set system_message = messages[0]["content"] %}

    {%- set loop_messages = messages[1:] %}

{%- else %}

    {%- set loop_messages = messages %}

{%- endif %}

{%- set ns = namespace(last_user_index=-1) %}

{%- for m in loop_messages %}

    {%- if m.role == 'user' %}

        {%- set ns.last_user_index = loop.index0 -%}

    {%- endif %}

{%- endfor %}

{%- if not tools is defined %}

    {%- set tools = [] %}

{%- endif %}

{%- if system_message is defined %}

    {{- "<|im_start|>system\n" + system_message }}

{%- else %}

    {{- "<|im_start|>system\nYou are MiMo, a helpful AI assistant engineered by Xiaomi." }}

{%- endif %}

{%- if tools is iterable and tools | length > 0 %}

    {{- "\n\n# Tools\n\nYou may call one or more functions to assist with the user query.\n\nYou have access to the following functions:\n\n" }}

    {{- "<tools>" }}

    {%- for tool in tools %}

        {%- if tool.function is defined %}

            {%- set tool = tool.function %}

        {%- endif %}

        {{- "\n<function>\n<name>" ~ tool.name ~ "</name>" }}

        {%- if tool.description is defined %}

            {{- '\n<description>' ~ (tool.description | trim) ~ '</description>' }}

        {%- endif %}

        {{- '\n<parameters>' }}

        {%- if tool.parameters is defined and tool.parameters is mapping and tool.parameters.properties is defined and tool.parameters.properties is mapping %}

            {%- for param_name, param_fields in tool.parameters.properties|items %}

                {{- '\n<parameter>' }}

                {{- '\n<name>' ~ param_name ~ '</name>' }}

                {%- if param_fields.type is defined %}

                    {{- '\n<type>' ~ (param_fields.type | string) ~ '</type>' }}

                {%- endif %}

                {%- if param_fields.description is defined %}

                    {{- '\n<description>' ~ (param_fields.description | trim) ~ '</description>' }}

                {%- endif %}

                {%- set handled_keys = ['name', 'type', 'description'] %}

                {{- render_extra_keys(param_fields, handled_keys) }}

                {{- '\n</parameter>' }}

            {%- endfor %}

        {%- endif %}

        {%- set handled_keys = ['type', 'properties'] %}

        {{- render_extra_keys(tool.parameters, handled_keys) }}

        {{- '\n</parameters>' }}

        {%- set handled_keys = ['type', 'name', 'description', 'parameters'] %}

        {{- render_extra_keys(tool, handled_keys) }}

        {{- '\n</function>' }}

    {%- endfor %}

    {{- "\n</tools>" }}

    {{- '\n\nFor each function call, output the function name and arguments in the following format:\n<tool_call>\n<function=example_function_name>\n<parameter=example_parameter_1>value_1</parameter>\n<parameter=example_parameter_2>This is the value for the second parameter\nthat can span\nmultiple lines</parameter>\n</function>\n</tool_call>\n\n<IMPORTANT>\n- Function calls MUST follow the specified format: an inner <function=...></function> block must be nested within <tool_call></tool_call> XML tags\n- DO NOT use function calls inside <think></think> tags.\n- The value enclosed between parameter tags is preserved exactly as-is, including newlines and spaces.\n</IMPORTANT>' }}

{%- endif %}

{{- '<|im_end|>' }}

{%- for message in loop_messages %}

    {%- if message.content is string %}

        {%- set content = message.content %}

    {%- else %}

        {%- set content = '' %}

    {%- endif %}

    {%- if message.role == "assistant" %}

        {%- if message.reasoning_content is string %}

            {%- set reasoning_content = message.reasoning_content %}

        {%- else %}

            {%- set reasoning_content = '' %}

            {%- if '</think>' in content %}

                {%- set reasoning_content = content.split('</think>')[0].split('<think>')[-1] %}

                {%- set content = content.split('</think>')[-1] %}

            {%- endif %}

        {%- endif %}

        {%- if (keep_all_reasoning or loop.index0 > ns.last_user_index) and reasoning_content -%}

            {{- '<|im_start|>' + message.role + '\n<think>' + reasoning_content + '</think>' + content }}

        {%- else %}

            {{- '<|im_start|>' + message.role + '\n<think></think>' + content }}

        {%- endif %}

        {%- if message.tool_calls is defined and message.tool_calls is iterable and message.tool_calls | length > 0 %}

            {%- for tool_call in message.tool_calls %}

                {%- if tool_call.function is defined %}

                    {%- set tool_call = tool_call.function %}

                {%- endif %}

                {{- '<tool_call>\n<function=' + tool_call.name + '>\n' }}

                {%- if tool_call.arguments is defined %}

                    {%- for args_name, args_value in tool_call.arguments|items %}

                        {{- '<parameter=' + args_name + '>' }}

                        {%- set args_value = args_value | tojson | safe if args_value is mapping or (args_value is sequence and args_value is not string) else args_value | string %}

                        {{- args_value }}

                        {{- '</parameter>\n' }}

                    {%- endfor %}

                {%- endif %}

                {{- '</function>\n</tool_call>' }}

            {%- endfor %}

        {%- endif %}

        {{- '<|im_end|>' }}

    {%- elif message.role == "user" or message.role == "system"%}

        {{- '<|im_start|>' + message.role + '\n' + message.content + '<|im_end|>' }}

    {%- elif message.role == "tool" %}

        {%- if loop.previtem and loop.previtem.role != "tool" %}

            {{- '<|im_start|>tool\n' }}

        {%- endif %}

        {{- '<tool_response>\n' }}

        {{- message.content }}

        {{- '\n</tool_response>\n' }}

        {%- if not loop.last and loop.nextitem.role != "tool" %}

            {{- '<|im_end|>' }}

        {%- elif loop.last %}

            {{- '<|im_end|>' }}

        {%- endif %}

    {%- else %}

        {{- '<|im_start|>' + message.role + '\n' + message.content + '<|im_end|>' }}

    {%- endif %}

{%- endfor %}

{%- if add_generation_prompt %}

    {{- '<|im_start|>assistant\n' }}

    {%- if not enable_thinking -%}

        {{- '<think></think>' -}}

    {%- else -%}

        {{- '' -}}

    {%- endif -%}

{%- endif %}