Model reference · open weights
Yi-1.5 is an open-weight language model from 01-ai. AxForge deploys and operates it for you on dedicated EU-owned hardware — with the licence handled where one is required.
Available as managed deployment — configured and operated for you on dedicated EU hardware, quoted per deployment.
What it is
| Maker | 01-ai |
|---|---|
| Type | Language models |
| Task | Text gen |
| Parameters (lead) | 8.8B |
| Context | 4k tokens |
| Runs with | transformers |
| Released | 2024-05-10 |
| Popularity | 16k downloads / month |
| Licence | Open weights |
About
Yi-1.5 is an upgraded version of Yi. It is continuously pre-trained on Yi with a high-quality corpus of 500B tokens and fine-tuned on 3M diverse fine-tuning samples.
Compared with Yi, Yi-1.5 delivers stronger performance in coding, math, reasoning, and instruction-following capability, while still maintaining excellent capabilities in language understanding, commonsense reasoning, and reading comprehension.
| Model | Context Length | Pre-trained Tokens |
|---|---|---|
| Yi-1.5 | 4K, 16K, 32K | 3.6T |
Chat models
| Name | Download |
|---|---|
| Yi-1.5-34B-Chat | • 🤗 Hugging Face • 🤖 ModelScope • 🟣 wisemodel |
| Yi-1.5-34B-Chat-16K | • 🤗 Hugging Face • 🤖 ModelScope • 🟣 wisemodel |
| Yi-1.5-9B-Chat | • 🤗 Hugging Face • 🤖 ModelScope • 🟣 wisemodel |
| Yi-1.5-9B-Chat-16K | • 🤗 Hugging Face • 🤖 ModelScope • 🟣 wisemodel |
| Yi-1.5-6B-Chat | • 🤗 Hugging Face • 🤖 ModelScope • 🟣 wisemodel |
Base models
| Name | Download |
|---|---|
| Yi-1.5-34B | • 🤗 Hugging Face • 🤖 ModelScope • 🟣 wisemodel |
| Yi-1.5-34B-32K | • 🤗 Hugging Face • 🤖 ModelScope • 🟣 wisemodel |
| Yi-1.5-9B | • 🤗 Hugging Face • 🤖 ModelScope • 🟣 wisemodel |
| Yi-1.5-9B-32K | • 🤗 Hugging Face • 🤖 ModelScope • 🟣 wisemodel |
| Yi-1.5-6B | • 🤗 Hugging Face • 🤖 ModelScope • 🟣 wisemodel |
Chat models
Yi-1.5-34B-Chat is on par with or excels beyond larger models in most benchmarks.
Yi-1.5-9B-Chat is the top performer among similarly sized open-source models.
Base models
Yi-1.5-34B is on par with or excels beyond larger models in some benchmarks.
Yi-1.5-9B is the top performer among similarly sized open-source models.
For getting up and running with Yi-1.5 models quickly, see README.
From the published model card. Full card on the HuggingFace links in the sidebar.
Using it via the API
Once AxForge deploys yi-1-5 for you, it answers on the OpenAI-compatible API — the same base URL and keys as every other model. (yi-1-5 below is illustrative; you get the exact model name on deployment.)
$ curl -sS https://api.axforge.ai/v1/chat/completions \
-H "Authorization: Bearer $AXFORGE_API_KEY" \
-H "Content-Type: application/json" \
-d '{"model":"yi-1-5","messages":[{"role":"user","content":"Hello"}]}'
Create an account — your API key is available in the console. 5M tokens/month currently included with every new account at launch.