openai

/

gpt-oss-20b

like 4.79k

Follow

OpenAI 37.8k

Same.

I edited the modelfile, which got the ollama show gpt-oss:20b to work, but it won't run. I'm guessing that's a different issue though.

$ sudo vi /usr/share/ollama/.ollama/models/blobs/sha256-51468a0fd901ba85884effc057a361f6dd33e4b3c99ead45f2673d2fd79a8943

From

<|start|>system<|message|>You are ChatGPT, a large language model trained by OpenAI.
Knowledge cutoff: 2024-06
Current date: {{ currentDate }}
{{- if and .IsThinkSet .Think (ne .ThinkLevel "") }}
...

To

<|start|>system<|message|>You are ChatGPT, a large language model trained by OpenAI.
Knowledge cutoff: 2024-06
Current date: August 5, 2025.
{{- if and .IsThinkSet .Think (ne .ThinkLevel "") }}

Then

$ ollama show gpt-oss:20b
  Model
    architecture        gptoss
    parameters          20.9B
    context length      131072
    embedding length    2880
    quantization        MXFP4

  Capabilities
    completion
    tools

  Parameters
    temperature    1

YMMV

The model template contains unsupported currentDate. Don't know how to fix it. It doesn't work if I delete this line because of SHA matching or something else. I'm trying to run local model 2nd time in my life so any expertise will be helpful.

<|start|>system<|message|>You are ChatGPT, a large language model trained by OpenAI.
Knowledge cutoff: 2024-06
Current date: {{ currentDate }}
{{- if and .IsThinkSet .Think (ne .ThinkLevel "") }}

Reasoning: {{ .ThinkLevel }}
{{- else if or (not .IsThinkSet) (and .IsThinkSet .Think) }}

Reasoning: medium
{{- end }}

{{- $hasNonBuiltinTools := false }}
{{- if .Tools -}}
{{- $hasBrowserSearch := false }}
{{- $hasBrowserOpen := false }}
{{- $hasBrowserFind := false }}
{{- $hasPython := false }}
  {{- range .Tools }}
    {{- if eq .Function.Name "browser.search" -}}{{- $hasBrowserSearch = true -}}
    {{- else if eq .Function.Name "browser.open" -}}{{- $hasBrowserOpen = true -}}
    {{- else if eq .Function.Name "browser.find" -}}{{- $hasBrowserFind = true -}}
    {{- else if eq .Function.Name "python" -}}{{- $hasPython = true -}}
    {{- else }}{{ $hasNonBuiltinTools = true -}}
    {{- end }}
  {{- end }}
{{- if or $hasBrowserSearch $hasBrowserOpen $hasBrowserFind $hasPython }}

# Tools
{{- if or $hasBrowserSearch $hasBrowserOpen $hasBrowserFind }}

## browser

// Tool for browsing.
// The `cursor` appears in brackets before each browsing display: `[{cursor}]`.
// Cite information from the tool using the following format:
// `【{cursor}†L{line_start}(-L{line_end})?】`, for example: `【6†L9-L11】` or `【8†L3】`.
// Do not quote more than 10 words directly from the tool output.
// sources=web (default: web)
namespace browser {
{{- if $hasBrowserSearch }}

// Searches for information related to `query` and displays `topn` results.
type search = (_: {
query: string,
topn?: number, // default: 10
source?: string,
}) => any;
{{- end }}
{{- if $hasBrowserOpen }}

// Opens the link `id` from the page indicated by `cursor` starting at line number `loc`, showing `num_lines` lines.
// Valid link ids are displayed with the formatting: `【{id}†.*】`.
// If `cursor` is not provided, the most recent page is implied.
// If `id` is a string, it is treated as a fully qualified URL associated with `source`.
// If `loc` is not provided, the viewport will be positioned at the beginning of the document or centered on the most relevant passage, if available.
// Use this function without `id` to scroll to a new location of an opened page.
type open = (_: {
id?: number | string, // default: -1
cursor?: number, // default: -1
loc?: number, // default: -1
num_lines?: number, // default: -1
view_source?: boolean, // default: false
source?: string,
}) => any;
{{- end }}
{{- if $hasBrowserFind }}

// Finds exact matches of `pattern` in the current page, or the page given by `cursor`.
type find = (_: {
pattern: string,
cursor?: number, // default: -1
}) => any;
{{- end }}

} // namespace browser
{{- end }}{{/* end if has browser tools */}}
{{- if $hasPython }}

## python

Use this tool to execute Python code in your chain of thought. The code will not be shown to the user. This tool should be used for internal reasoning, but not for code that is intended to be visible to the user (e.g. when creating plots, tables, or files).

When you send a message containing Python code to python, it will be executed in a stateful Jupyter notebook environment. python will respond with the output of the execution or time out after 120.0 seconds. The drive at '/mnt/data' can be used to save and persist user files. Internet access for this session is UNKNOWN. Depends on the cluster.
{{- end }}{{/* end if hasPython */}}
{{- end }}{{/* end if has any built-in tools */}}
{{- end }}{{/* end if .Tools */}}

# Valid channels: analysis, commentary, final. Channel must be included for every message.{{ if $hasNonBuiltinTools }}
Calls to these tools must go to the commentary channel: 'functions'.
{{- end -}}<|end|>{{/* end of system */ -}}
{{- if or $hasNonBuiltinTools .System -}}
<|start|>developer<|message|>{{- if $hasNonBuiltinTools }}# Tools

## functions

namespace functions {
{{- range .Tools }}
{{- if not (or (eq .Function.Name "browser.search") (eq .Function.Name "browser.open") (eq .Function.Name "browser.find") (eq .Function.Name "python")) }}
{{if .Function.Description }}
// {{ .Function.Description }}
{{- end }}
{{- if and .Function.Parameters.Properties (gt (len .Function.Parameters.Properties) 0) }}
type {{ .Function.Name }} = (_: {
{{- range $name, $prop := .Function.Parameters.Properties }}
{{- if $prop.Description }}
  // {{ $prop.Description }}
{{- end }}
  {{ $name }}: {{ if gt (len $prop.Type) 1 }}{{ range $i, $t := $prop.Type }}{{ if $i }} | {{ end }}{{ $t }}{{ end }}{{ else }}{{ index $prop.Type 0 }}{{ end }},
{{- end }}
}) => any;
{{- else }}
type {{ .Function.Name }} = () => any;
{{- end }}
{{- end }}{{/* end if not browser tool */}}
{{- end }}{{/* end of range .Tools */}}

} // namespace functions
{{- end }}{{/* end if hasNonBuiltinTools */}}
{{- if .System}}

# Instructions

{{ .System }}
{{- end -}}
<|end|>
{{- end -}}
{{- /* Find the index of the last user message */ -}}
{{- $lastUserIdx := -1 }}
{{- $prefillingContent := false }}
{{- $prefillingThinkingOnly := false }}
{{- range $i, $msg := .Messages }}
  {{- $last := eq (len (slice $.Messages $i)) 1 -}}
  {{- if eq $msg.Role "user" }}
    {{- $lastUserIdx = $i }}
  {{- end -}}
  {{- if and $last (eq $msg.Role "assistant") (gt (len $msg.Content) 0) }}
    {{- $prefillingContent = true }}
  {{- else if and $last (eq $msg.Role "assistant") (gt (len $msg.Thinking) 0) }}
    {{- $prefillingThinkingOnly = true }}
  {{- end }}
{{- end -}}
{{- /* Now render messages */ -}}
{{- range $i, $msg := .Messages }}
  {{- $last := eq (len (slice $.Messages $i)) 1 -}}
  {{- if (ne $msg.Role "system") -}}
    {{- if eq $msg.Role "tool" -}}
      {{- if or (eq $msg.ToolName "python") (eq $msg.ToolName "browser.search") (eq $msg.ToolName "browser.open") (eq $msg.ToolName "browser.find") -}}
        <|start|>{{ $msg.ToolName }} to=assistant<|message|>{{ $msg.Content }}<|end|>
      {{- else -}}
        <|start|>functions.{{ $msg.ToolName }} to=assistant<|message|>{{ $msg.Content }}<|end|>
      {{- end -}}
    {{- else if eq $msg.Role "assistant" -}}
      {{- if and $msg.Thinking (gt $i $lastUserIdx) -}}{{- /* Show thinking only after last user message */ -}}
      <|start|>assistant<|channel|>analysis<|message|>{{ $msg.Thinking }}{{- if not $prefillingThinkingOnly -}}<|end|>{{- end -}}
      {{- end -}}
      {{- if gt (len $msg.Content) 0 -}}
        <|start|>assistant<|channel|>final<|message|>{{ $msg.Content }}{{- if not $prefillingContent -}}<|end|>{{- end -}}
      {{- end -}}
      {{- if gt (len $msg.ToolCalls) 0 -}}
        {{- range $j, $toolCall := $msg.ToolCalls -}}
          {{- $isBuiltin := or (eq $toolCall.Function.Name "python") (eq $toolCall.Function.Name "browser.search") (eq $toolCall.Function.Name "browser.open") (eq $toolCall.Function.Name "browser.find") -}}
          <|start|>assistant<|channel|>{{ if $isBuiltin }}analysis{{ else }}commentary{{ end }} to={{ if not $isBuiltin}}functions.{{end}}{{ $toolCall.Function.Name }} <|constrain|>json<|message|>{{ $toolCall.Function.Arguments }}<|call|>
        {{- end -}}
      {{- end -}}
    {{- else if eq $msg.Role "user" -}}
      <|start|>{{ $msg.Role }}<|message|>{{ $msg.Content }}<|end|>
    {{- end }}
  {{- else }}
  {{- end }}
{{- end -}}
{{- if not (or $prefillingContent $prefillingThinkingOnly) -}}
<|start|>assistant
{{- end -}}

Yeah man! Can’t run or delete, because Ollama tries to process a broken template currentDate during both actions, and fails.

When trying to rebuild: ollama create gpt-oss:20b -f Modelfile
Getting: Error: no Modelfile or safetensors files found

Download the latest version of Ollama, they just fixed the bug - see https://x.com/ollama/status/1952805705322512465

Confirming this works for me now 💪 gg OpenAI & Ollama

$ curl -fsSL https://ollama.com/install.sh | sh
$ ollama run gpt-oss:20b

Redownloading Ollama helped