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题意：OpenAI GPT-3 API：davinci 和 text-davinci-003 有什么区别

问题背景：

I'm testing the different models for OpenAI, and I noticed that not all of them are developed or trained enough to give a reliable response.

我正在测试 OpenAI 的不同模型，我发现并不是所有模型都足够完善或训练充分，无法提供可靠的回应

The models I tested are the following:

我测试的模型如下：

model_engine = "text-davinci-003"
model_engine = "davinci" 
model_engine = "curie" 
model_engine = "babbage" 
model_engine = "ada" 

I need to understand what the difference is between davinci and text-davinci-003, and how to improve the responses to match that response when you use ChatGPT.

我需要了解 davinci 和 text-davinci-003 之间的区别，以及如何改进响应，使其与使用 ChatGPT 时的响应相匹配

问题解决：

TL;DR   摘要

• text-davinci-003 is the newer and more capable model than davinci

text-davinci-003 是比 davinci 更新且更强大的模型

• text-davinci-003 supports a longer context window than davinci

text-davinci-003 支持比 davinci 更长的上下文窗口

• text-davinci-003 was trained on a more recent dataset than davinci

text-davinci-003 使用比 davinci 更新的数据集进行训练

• text-davinci-003 is cheaper than davinci

text-davinci-003 比 davinci 更便宜

• text-davinci-003 is not available for fine-tuning, while davinci is

text-davinci-003 不支持微调，而 davinci 支持

Capabilities   能力

As stated in the official OpenAI article:   正如 OpenAI 官方文章中所述

While both davinci and text-davinci-003 are powerful models, they differ in a few key ways.

text-davinci-003 is the newer and more capable model, designed specifically for instruction-following tasks. This enables it to respond concisely and more accurately - even in zero-shot scenarios, i.e. without the need for any examples given in the prompt. davinci, on the other hand, can be fine-tuned on a specific task, which can make it very effective if you have access to at least a few hundred training examples.

Additionally, text-davinci-003 supports a longer context window (max prompt+completion length) than davinci - 4097 tokens compared to davinci's 2049.

Finally, text-davinci-003 was trained on a more recent dataset, containing data up to June 2021. These updates, along with its support for Inserting text, make text-davinci-003 a particularly versatile and powerful model we recommend for most use-cases.

Use text-davinci-003 because the other models you mentioned in your question are less capable.

使用 text-davinci-003，因为您在问题中提到的其他模型能力较弱

If you buy a ChatGPT Plus subscription, you can also use gpt-3.5-turbo or gpt-4. So, to get similar responses as you get from ChatGPT, it depends on whether you are subscribed or not. For sure, gpt-3.5-turbo and gpt-4 are even more capable than text-davinci-003.

如果您购买 ChatGPT Plus 订阅，您还可以使用 gpt-3.5-turbo 或 gpt-4。因此，获得与 ChatGPT 相似的响应取决于您是否订阅。可以肯定的是，gpt-3.5-turbo 和 gpt-4 的能力甚至比 text-davinci-003 更强

Costs   成本

text-davinci-003 is cheaper than davinci, as stated on the official OpenAI website:

正如 OpenAI 官方网站所述，text-davinci-003 比 davinci 更便宜

MODEL	USAGE
davinci	$0.1200 / 1K tokens
text-davinci-003	$0.0200 / 1K tokens

Fine-tuning availability   微调可用性

text-davinci-003 is not available for fine-tuning, while davinci is, as stated in the official OpenAI documentation:

正如 OpenAI 官方文档所述，text-davinci-003 不支持微调，而 davinci 支持

Fine-tuning is currently only available for the following base models: davinci, curie, babbage, and ada. These are the original models that do not have any instruction following training (like text-davinci-003 does for example).

MODEL	FINE-TUNING AVAILABILITY	TRAINING
davinci	Yes	$0.0300 / 1K tokens
text-davinci-003	No