1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
|
// Copyright 2025 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// https://github.com/webmachinelearning/prompt-api
// The argument to the prompt() method and others like it
typedef (
sequence<LanguageModelMessage>
// Shorthand for `[{ role: "user", content: [{ type: "text", value: providedValue }] }]`
or DOMString
) LanguageModelPrompt;
dictionary LanguageModelMessage {
required LanguageModelMessageRole role;
// The DOMString branch is shorthand for `[{ type: "text", value: providedValue }]`
required (DOMString or sequence<LanguageModelMessageContent>) content;
};
dictionary LanguageModelMessageContent {
required LanguageModelMessageType type;
required LanguageModelMessageValue value;
};
enum LanguageModelMessageRole { "system", "user", "assistant" };
enum LanguageModelMessageType { "text", "image", "audio" };
typedef (
ImageBitmapSource
or AudioBuffer
or HTMLAudioElement
or BufferSource
or DOMString
) LanguageModelMessageValue;
dictionary LanguageModelCreateCoreOptions {
// Note: these two have custom out-of-range handling behavior, not in the IDL layer.
// They are unrestricted double so as to allow +Infinity without failing.
unrestricted double topK;
unrestricted double temperature;
// The expected types and languages for the session.
sequence<LanguageModelExpected> expectedInputs;
sequence<LanguageModelExpected> expectedOutputs;
};
dictionary LanguageModelCreateOptions : LanguageModelCreateCoreOptions {
AbortSignal signal;
CreateMonitorCallback monitor;
sequence<LanguageModelMessage> initialPrompts;
// DEPRECATED: Use `initialPrompts: [{role: 'system', content: ... }, ...]`.
// TODO(crbug.com/381974893): Remove this along with the console warning.
DOMString systemPrompt;
};
dictionary LanguageModelExpected {
required LanguageModelMessageType type;
sequence<DOMString> languages;
};
|
