Amazon Bedrockで選択できるモデルの一覧

## 目次

* [テキストモデル](#テキストモデル)
* [テキストモデル（Embeddings）](#テキストモデルembeddings)
* [画像モデル](#画像モデル)


## テキストモデル

| モデル名 | 最大トークン数 | 言語 | ユースケース | 特徴 |
| --- | --- | --- | --- | --- |
| **Claude 2**<br />[Anthropic](https://www.anthropic.com) | **100K** | English and **multiple other languages** | Thoughtful dialogue, content creation, complex reasoning, creativity, and coding. Claude 2 excels at the core capabilities of Claude 1.3 and Claude Instant. | Claude 2 is a general purpose large language model, and the most capable system released by Anthropic to date. |
| **Claude 1.3**<br />[Anthropic](https://www.anthropic.com) | **100K** | English and **multiple other languages** | Search, writing, editing, outlining, and summarizing text; coding; and providing helpful advice about a broad range of subjects. | Claude 1.3 is an earlier version of Anthropic's general purpose large language models. |
| **Claude Instant**<br />[Anthropic](https://www.anthropic.com) | **100K** | English and **multiple other languages** | Casual dialogue, text analysis, summarization, and document comprehension. | Claude Instant is Anthropic's faster, lower-priced yet very capable large language model. |
| **Command**<br />[Cohere](https://cohere.com/) | 4k | English |Chat, text generation, text summarization. | Command is Cohere’s generative large language model (52B parameters). |
| **Jurassic-2 Ultra**<br />[AI21 Labs](https://www.ai21.com/) | 8,192 | English, Spanish, French, German, Portuguese, Italian, and Dutch | Question answering, summarization, draft generation, advanced information extraction, ideation for tasks requiring intricate reasoning and logic. | AI21’s most powerful model, offering exceptional quality. |
| **Jurassic-2 Mid**<br />[AI21 Labs](https://www.ai21.com/) | 8,192 | English, Spanish, French, German, Portuguese, Italian, and Dutch | Question answering, summarization, draft generation, advanced information extraction, ideation. | AI21’s mid-sized model, designed to strike the right balance between exceptional quality and affordability. |
| **Titan Text G1 - Express**<br />[AWS](https://aws.amazon.com/jp/bedrock/titan/) | 8k | English | Open ended text generation, brainstorming, summarization, code generation, table creation, data formatting, paraphrasing, chain of though, rewrite, extraction, Q&A, chat | Express is a generative large language model (LLM) for tasks such as summarization, text generation (for example, creating a blog post), classification, open-ended Q&A, and information extraction. |
| **Llama-2-13b-chat**<br />[Meta](https://ai.meta.com/llama/) | 4K | English | Assistant-like chat | Fine-tuned model in the parameter size of 13B. |
| **Llama-2-70b-chat**<br />[Meta](https://ai.meta.com/llama/) | 4K | English | Assistant-like chat | Fine-tuned model in the parameter size of 70B. |

日本語で使うならAnthropicのClaudeが良さそう。100Kトークンもすごい。

Llama-2-13b-chatとLlama-2-70b-chatは2023/10/1時点で未提供

## テキストモデル（Embeddings）

| モデル名 | 最大トークン数 | 言語 | ユースケース | 特徴 |
| --- | --- | --- | --- | --- |
| **Titan Embeddings Generation 1 (G1)**<br />[AWS](https://aws.amazon.com/jp/bedrock/titan/) | 8k | **Multilingual** | text retrieval, semantic similarity, clustering | Text is fast and cost-effective. Designed for fast responses, this model is an ideal choice for language processing tasks that require maximum affordability and less processing power. |

Titan Embeddingsは日本語にも対応。

https://qiita.com/moritalous/items/d68ee613776e2e18b81b

CohereはMultilingual Embed Modelがあるので、そのうち提供されるかも

https://docs.cohere.com/docs/multilingual-language-models


## 画像モデル

| モデル名 | 最大トークン数 | 言語 | ユースケース | 特徴 |
| --- | --- | --- | --- | --- |
| **Stable Diffusion XL 1.0**<br />[Stability AI](https://ja.stability.ai/) | 77 token limit for prompts | English | Advertising & Marketing, Media & Entertainment, Gaming & Metaverse. | The most advanced text to image model from Stability AI. |
| **Stable Diffusion XL 0.8**<br />[Stability AI](https://ja.stability.ai/) | 77 token limit for prompts | English | Advertising & Marketing, Media & Entertainment, Gaming & Metaverse. | Text to image model from Stability AI. |

Stable Diffusion XL 1.0は2023/10/1時点で未提供

## 参考

https://aws.amazon.com/jp/bedrock/claude/
https://aws.amazon.com/jp/bedrock/cohere-command/
https://aws.amazon.com/jp/bedrock/jurassic/
https://aws.amazon.com/jp/bedrock/llama-2/
https://aws.amazon.com/jp/bedrock/stable-diffusion/
https://aws.amazon.com/jp/bedrock/titan/