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Add GPT-4 Turbo preview model #181

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Add GPT-4 Turbo preview model #181

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8 changes: 8 additions & 0 deletions types/openai.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -7,6 +7,7 @@ export enum OpenAIModelID {
GPT_3_5_16K_AZ = 'gpt-35-turbo-16k',
GPT_4 = 'gpt-4',
GPT_4_32K = 'gpt-4-32k',
GPT_4_128K = 'gpt-4-1106-preview',
TEXT_EMBEDDING_ADA_002 = 'text-embedding-ada-002',
}

Expand Down Expand Up @@ -72,6 +73,13 @@ export const OpenAIModels: Record<OpenAIModelID, OpenAIModel> = {
tokenLimit: 32000,
type: OpenAIModelType.CHAT
},
[OpenAIModelID.GPT_4_128K]: {
id: OpenAIModelID.GPT_4_128K,
name: 'GPT-4-128K',
maxLength: 384000,
tokenLimit: 128000,
type: OpenAIModelType.CHAT,
},
[OpenAIModelID.TEXT_EMBEDDING_ADA_002]: {
id: OpenAIModelID.TEXT_EMBEDDING_ADA_002,
name: 'TEXT-EMBEDDING-ADA-002',
Expand Down
6 changes: 5 additions & 1 deletion utils/server/tiktoken.ts
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Expand Up @@ -2,14 +2,18 @@ import cl100k from 'tiktoken/encoders/cl100k_base.json';
import p50k from 'tiktoken/encoders/p50k_base.json';
import { Tiktoken } from 'tiktoken/lite';
const { encoding_for_model } = require('tiktoken');
import { OpenAIModelID } from "@/types/openai";

export const getTiktokenEncoding = async (model: string): Promise<Tiktoken> => {
// Azure fix
const modelId = model.replace('gpt-35', 'gpt-3.5')
if (modelId.indexOf('text-davinci-') !== -1) {
return new Tiktoken(p50k.bpe_ranks, p50k.special_tokens, p50k.pat_str);
}
if (modelId.indexOf('gpt-3.5') !== -1 || modelId.indexOf('gpt-4') !== -1) {
if (
(modelId.indexOf('gpt-3.5') !== -1 || modelId.indexOf('gpt-4') !== -1) &&
modelId !== OpenAIModelID.GPT_4_128K
) {
return encoding_for_model(modelId, {
'<|im_start|>': 100264,
'<|im_end|>': 100265,
Expand Down