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feat: add reasoning and reasoning_content fields to OpenAI message types #4244

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feat: add reasoning and reasoning_content fields to OpenAI message types #4244

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31 changes: 31 additions & 0 deletions client-sdks/stainless/openapi.yml
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -4151,6 +4151,16 @@ components:
type: array
- type: 'null'
nullable: true
reasoning_content:
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@ashwinb ashwinb Dec 1, 2025

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@cdoern can we get away by adding just the reasoning field? while we are doing this, can you think about how we should add Gemini-3's "encrypted thought summaries" field also?

anyOf:
- type: string
- type: 'null'
nullable: true
reasoning:
anyOf:
- type: string
- type: 'null'
nullable: true
title: OpenAIAssistantMessageParam
type: object
OpenAIChatCompletionContentPartImageParam:
Expand Down Expand Up @@ -4880,6 +4890,11 @@ components:
- type: string
- type: 'null'
nullable: true
reasoning:
anyOf:
- type: string
- type: 'null'
nullable: true
title: OpenAIChoiceDelta
type: object
OpenAIChunkChoice:
Expand Down Expand Up @@ -11747,6 +11762,14 @@ components:
$ref: '#/components/schemas/OpenAIChatCompletionToolCall'
type: array
- type: 'null'
reasoning_content:
anyOf:
- type: string
- type: 'null'
reasoning:
anyOf:
- type: string
- type: 'null'
type: object
title: OpenAIAssistantMessageParam
description: A message containing the model's (assistant) response in an OpenAI-compatible chat completion request.
Expand Down Expand Up @@ -11776,6 +11799,14 @@ components:
$ref: '#/components/schemas/OpenAIChatCompletionToolCall'
type: array
- type: 'null'
reasoning_content:
anyOf:
- type: string
- type: 'null'
reasoning:
anyOf:
- type: string
- type: 'null'
type: object
title: OpenAIAssistantMessageParam
description: A message containing the model's (assistant) response in an OpenAI-compatible chat completion request.
Expand Down
31 changes: 31 additions & 0 deletions docs/static/deprecated-llama-stack-spec.yaml
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -994,6 +994,16 @@ components:
type: array
- type: 'null'
nullable: true
reasoning_content:
anyOf:
- type: string
- type: 'null'
nullable: true
reasoning:
anyOf:
- type: string
- type: 'null'
nullable: true
title: OpenAIAssistantMessageParam
type: object
OpenAIChatCompletionContentPartImageParam:
Expand Down Expand Up @@ -1723,6 +1733,11 @@ components:
- type: string
- type: 'null'
nullable: true
reasoning:
anyOf:
- type: string
- type: 'null'
nullable: true
title: OpenAIChoiceDelta
type: object
OpenAIChunkChoice:
Expand Down Expand Up @@ -8590,6 +8605,14 @@ components:
$ref: '#/components/schemas/OpenAIChatCompletionToolCall'
type: array
- type: 'null'
reasoning_content:
anyOf:
- type: string
- type: 'null'
reasoning:
anyOf:
- type: string
- type: 'null'
type: object
title: OpenAIAssistantMessageParam
description: A message containing the model's (assistant) response in an OpenAI-compatible chat completion request.
Expand Down Expand Up @@ -8619,6 +8642,14 @@ components:
$ref: '#/components/schemas/OpenAIChatCompletionToolCall'
type: array
- type: 'null'
reasoning_content:
anyOf:
- type: string
- type: 'null'
reasoning:
anyOf:
- type: string
- type: 'null'
type: object
title: OpenAIAssistantMessageParam
description: A message containing the model's (assistant) response in an OpenAI-compatible chat completion request.
Expand Down
31 changes: 31 additions & 0 deletions docs/static/experimental-llama-stack-spec.yaml
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -859,6 +859,16 @@ components:
type: array
- type: 'null'
nullable: true
reasoning_content:
anyOf:
- type: string
- type: 'null'
nullable: true
reasoning:
anyOf:
- type: string
- type: 'null'
nullable: true
title: OpenAIAssistantMessageParam
type: object
OpenAIChatCompletionContentPartImageParam:
Expand Down Expand Up @@ -1588,6 +1598,11 @@ components:
- type: string
- type: 'null'
nullable: true
reasoning:
anyOf:
- type: string
- type: 'null'
nullable: true
title: OpenAIChoiceDelta
type: object
OpenAIChunkChoice:
Expand Down Expand Up @@ -7582,6 +7597,14 @@ components:
$ref: '#/components/schemas/OpenAIChatCompletionToolCall'
type: array
- type: 'null'
reasoning_content:
anyOf:
- type: string
- type: 'null'
reasoning:
anyOf:
- type: string
- type: 'null'
type: object
title: OpenAIAssistantMessageParam
description: A message containing the model's (assistant) response in an OpenAI-compatible chat completion request.
Expand Down Expand Up @@ -7611,6 +7634,14 @@ components:
$ref: '#/components/schemas/OpenAIChatCompletionToolCall'
type: array
- type: 'null'
reasoning_content:
anyOf:
- type: string
- type: 'null'
reasoning:
anyOf:
- type: string
- type: 'null'
type: object
title: OpenAIAssistantMessageParam
description: A message containing the model's (assistant) response in an OpenAI-compatible chat completion request.
Expand Down
31 changes: 31 additions & 0 deletions docs/static/llama-stack-spec.yaml
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -3172,6 +3172,16 @@ components:
type: array
- type: 'null'
nullable: true
reasoning_content:
anyOf:
- type: string
- type: 'null'
nullable: true
reasoning:
anyOf:
- type: string
- type: 'null'
nullable: true
title: OpenAIAssistantMessageParam
type: object
OpenAIChatCompletionContentPartImageParam:
Expand Down Expand Up @@ -3901,6 +3911,11 @@ components:
- type: string
- type: 'null'
nullable: true
reasoning:
anyOf:
- type: string
- type: 'null'
nullable: true
title: OpenAIChoiceDelta
type: object
OpenAIChunkChoice:
Expand Down Expand Up @@ -10417,6 +10432,14 @@ components:
$ref: '#/components/schemas/OpenAIChatCompletionToolCall'
type: array
- type: 'null'
reasoning_content:
anyOf:
- type: string
- type: 'null'
reasoning:
anyOf:
- type: string
- type: 'null'
type: object
title: OpenAIAssistantMessageParam
description: A message containing the model's (assistant) response in an OpenAI-compatible chat completion request.
Expand Down Expand Up @@ -10446,6 +10469,14 @@ components:
$ref: '#/components/schemas/OpenAIChatCompletionToolCall'
type: array
- type: 'null'
reasoning_content:
anyOf:
- type: string
- type: 'null'
reasoning:
anyOf:
- type: string
- type: 'null'
type: object
title: OpenAIAssistantMessageParam
description: A message containing the model's (assistant) response in an OpenAI-compatible chat completion request.
Expand Down
31 changes: 31 additions & 0 deletions docs/static/stainless-llama-stack-spec.yaml
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -4151,6 +4151,16 @@ components:
type: array
- type: 'null'
nullable: true
reasoning_content:
anyOf:
- type: string
- type: 'null'
nullable: true
reasoning:
anyOf:
- type: string
- type: 'null'
nullable: true
title: OpenAIAssistantMessageParam
type: object
OpenAIChatCompletionContentPartImageParam:
Expand Down Expand Up @@ -4880,6 +4890,11 @@ components:
- type: string
- type: 'null'
nullable: true
reasoning:
anyOf:
- type: string
- type: 'null'
nullable: true
title: OpenAIChoiceDelta
type: object
OpenAIChunkChoice:
Expand Down Expand Up @@ -11747,6 +11762,14 @@ components:
$ref: '#/components/schemas/OpenAIChatCompletionToolCall'
type: array
- type: 'null'
reasoning_content:
anyOf:
- type: string
- type: 'null'
reasoning:
anyOf:
- type: string
- type: 'null'
type: object
title: OpenAIAssistantMessageParam
description: A message containing the model's (assistant) response in an OpenAI-compatible chat completion request.
Expand Down Expand Up @@ -11776,6 +11799,14 @@ components:
$ref: '#/components/schemas/OpenAIChatCompletionToolCall'
type: array
- type: 'null'
reasoning_content:
anyOf:
- type: string
- type: 'null'
reasoning:
anyOf:
- type: string
- type: 'null'
type: object
title: OpenAIAssistantMessageParam
description: A message containing the model's (assistant) response in an OpenAI-compatible chat completion request.
Expand Down
8 changes: 7 additions & 1 deletion src/llama_stack_api/inference.py
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -448,12 +448,16 @@ class OpenAIAssistantMessageParam(BaseModel):
:param content: The content of the model's response
:param name: (Optional) The name of the assistant message participant.
:param tool_calls: List of tool calls. Each tool call is an OpenAIChatCompletionToolCall object.
:param reasoning_content: (Optional) The reasoning content from the model (for vLLM ≤ v0.8.4)
:param reasoning: (Optional) The reasoning content from the model (for vLLM ≥ v0.9.x)
"""

role: Literal["assistant"] = "assistant"
content: OpenAIChatCompletionTextOnlyMessageContent | None = None
name: str | None = None
tool_calls: list[OpenAIChatCompletionToolCall] | None = None
reasoning_content: str | None = None
reasoning: str | None = None


@json_schema_type
Expand Down Expand Up @@ -605,14 +609,16 @@ class OpenAIChoiceDelta(BaseModel):
:param refusal: (Optional) The refusal of the delta
:param role: (Optional) The role of the delta
:param tool_calls: (Optional) The tool calls of the delta
:param reasoning_content: (Optional) The reasoning content from the model (non-standard, for o1/o3 models)
:param reasoning_content: (Optional) The reasoning content from the model (for vLLM ≤ v0.8.4)
:param reasoning: (Optional) The reasoning content from the model (for vLLM ≥ v0.9.x)
"""

content: str | None = None
refusal: str | None = None
role: str | None = None
tool_calls: list[OpenAIChatCompletionToolCall] | None = None
reasoning_content: str | None = None
reasoning: str | None = None


@json_schema_type
Expand Down