models/templates/NVIDIA-Nemotron-Nano-v2.jinja

{%- set ns = namespace(enable_thinking=true) -%}
{%- for message in messages -%}
  {%- set content = message['content'] -%}
  {%- if message['role'] == 'user' or message['role'] == 'system' -%}
    {%- if '/think' in content -%}
      {%- set ns.enable_thinking = true -%}
    {%- elif '/no_think' in content -%}
      {%- set ns.enable_thinking = false -%}
    {%- endif -%}
  {%- endif -%}
{%- endfor -%}

{%- if messages[0]['role'] != 'system' -%}
  {%- set ns.non_tool_system_content = '' -%}
  {{- '<SPECIAL_10>System
' -}}
{%- else -%}
  {%- set ns.non_tool_system_content = (messages[0]['content'] | default('', true)).replace('/think', '').replace('/no_think', '').strip() -%}
  {{- '<SPECIAL_10>System
' + ns.non_tool_system_content }}
{%- endif -%}

{%- if tools -%}
  {%- if ns.non_tool_system_content is defined and ns.non_tool_system_content != '' -%}
    {{- '

' -}}
  {%- endif -%}
  {{- 'You can use the following tools to assist the user if required:' -}}
  {{- '
<AVAILABLE_TOOLS>[' -}}
  {%- for tool in tools -%}
    {{- (tool.function if tool.function is defined else tool) | tojson -}}
    {{- ', ' if not loop.last else '' -}}
  {%- endfor -%}
  {{- ']</AVAILABLE_TOOLS>

' -}}
  {{- 'If you decide to call any tool(s), use the following format:
' -}}
  {{- '<TOOLCALL>[{{"name": "tool_name1", "arguments": "tool_args1"}}, ' -}}
  {{- '{{"name": "tool_name2", "arguments": "tool_args2"}}]</TOOLCALL>

' -}}
  {{- 'The user will execute tool-calls and return responses from tool(s) in this format:
' -}}
  {{- '<TOOL_RESPONSE>[{{"tool_response1"}}, {{"tool_response2"}}]</TOOL_RESPONSE>

' -}}
  {{- 'Based on the tool responses, you can call additional tools if needed, correct tool calls if any errors are found, or just respond to the user.' -}}
{%- endif -%}
{{- '

' -}}
{%- set messages = messages[1:] if messages[0]['role'] == 'system' else messages -%}
{%- if messages[-1]['role'] == 'assistant' -%}
  {%- set ns.last_turn_assistant_content = (messages[-1]['content'] | default('', true)).strip() -%}
  {%- set ns.last_turn_assistant_tool_calls = messages[-1]['tool_calls'] if 'tool_calls' in messages[-1] else [] -%}
  {%- set messages = messages[:-1] -%}
{%- endif -%}

{%- for message in messages %}
  {%- set content = message['content'] %}
  {%- if message['role'] == 'user' -%}
    {{- '<SPECIAL_11>User
' + (content | default('', true)).replace('/think', '').replace('/no_think', '').strip() + '
' }}
  {%- elif message['role'] == 'tool' -%}
    {%- if loop.first or (messages[loop.index0 - 1].role != 'tool') -%}
      {{- '<SPECIAL_11>User
' + '<TOOL_RESPONSE>[' }}
    {%- endif -%}
    {{- message['content'] -}}
    {{- ', ' if not loop.last and (messages[loop.index0 + 1].role == 'tool') else '' -}}
    {%- if loop.last or (messages[loop.index0 + 1].role != 'tool') -%}
      {{- ']</TOOL_RESPONSE>' -}}
    {%- endif -%}
  {%- elif message['role'] == 'assistant' -%}
    {%- if content and '</think>' in content -%}
      {%- set content = (content.split('</think>')[1] | default('', true)).strip() %}
    {%- endif -%}
    {{- '<SPECIAL_11>Assistant
' + ((content | default('', true)).strip() if content is not none else '') }}
    {%- if message.tool_calls -%}
      {%- if (content | default('', true)).strip() != '' -%}
        {{- '
' -}}
      {%- endif -%}
      {{- '<TOOLCALL>[' -}}
      {%- for call in message.tool_calls -%}
        {%- set fn = call.function if call.function is defined else call -%}
        {{- '{"name": "' + fn.name + '", "arguments": ' -}}
        {%- if fn.arguments is string -%}
          {{- fn.arguments -}}
        {%- else -%}
          {{- fn.arguments | tojson -}}
        {%- endif -%}
        {{- '}' + (', ' if not loop.last else '') -}}
      {%- endfor -%}
      {{- ']</TOOLCALL>' -}}
    {%- endif -%}
    {{- '
<SPECIAL_12>
' -}}
  {%- endif -%}
{%- endfor -%}

{%- if add_generation_prompt -%}
  {{- '<SPECIAL_11>Assistant
' -}}
  {%- if ns.enable_thinking is defined and ns.enable_thinking is false -%}
    {{- '<think></think>' -}}
  {%- else -%}
    {{- '<think>
' -}}
  {%- endif -%}
  {%- if ns.last_turn_assistant_content is defined and ns.last_turn_assistant_content != '' -%}
    {{- ns.last_turn_assistant_content -}}
  {%- endif -%}
{%- else -%}
  {%- if ns.last_turn_assistant_content is defined and ns.last_turn_assistant_content != '' -%}
    {{- '<SPECIAL_11>Assistant
' -}}
    {%- if ns.enable_thinking is defined and ns.enable_thinking is false -%}
      {{- '<think></think>' -}}
    {%- else -%}
      {{- '<think>
' -}}
    {%- endif -%}
    {{- ns.last_turn_assistant_content -}}
    {%- if continue_final_message is defined -%}
      {%- if continue_final_message is false -%}
        {{- '
<SPECIAL_12>
' -}}
      {%- endif -%}
    {%- else -%}
      {{- '
<SPECIAL_12>
' -}}
    {%- endif -%}
  {%- endif -%}
  {%- if ns.last_turn_assistant_tool_calls is defined and ns.last_turn_assistant_tool_calls | length > 0 -%}
    {{- '<SPECIAL_11>Assistant
' -}}
    {{- '<TOOLCALL>[' -}}
    {%- for call in ns.last_turn_assistant_tool_calls -%}
      {%- set fn = call.function if call.function is defined else call -%}
      {{- '{"name": "' + fn.name + '", "arguments": ' -}}
      {%- if fn.arguments is string -%}
        {{- fn.arguments -}}
      {%- else -%}
        {{- fn.arguments | tojson -}}
      {%- endif -%}
      {{- '}' + (', ' if not loop.last else '') -}}
    {%- endfor -%}
    {{- ']</TOOLCALL>' -}}
    {{- '<SPECIAL_12>

' -}}
 {%- endif -%}
{%- endif -%}