Provider · Founded 2023 · Beijing, China

01.AI: models, pricing and benchmarks

AI startup founded by Kai-Fu Lee, maker of Yi.

Models

in this index

Avg input

$2.39

per 1M tokens

Avg output

$10.97

per 1M tokens

Open weights

models

Best model

yi-lightning

by average score

Website

Visit

https://01.ai

All 01.AI models

Sorted by average benchmark score. Prices are per million tokens and context is measured in tokens.

#	Model	Provider	Context	Input / 1M	Avg score
1	Yi-Lightning	01.AI	32768	$4.22	77.2
2	Yi-Lightning Instruct	01.AI	128000	$4.16	76.5
3	Yi-Lightning Chat	01.AI	32768	$3.79	75.5
4	Yi-Large	01.AI	32768	$3.40	73.5
5	Yi-Large Chat	01.AI	65536	$3.49	73.5
6	Yi-Large Instruct	01.AI	32768	$3.48	73.4
7	Yi-Lightning Base	01.AI	16384	$3.31	72.7
8	Yi-Large Base	01.AI	16384	$2.78	70.3
9	Yi-Lightning 8B	01.AI	4096	$1.16	59.2
10	Yi-Large 8B	01.AI	32768	$0.88	56.1
11	Yi-Lightning 7B	01.AI	32768	$1.00	55.9
12	Yi-Large 7B	01.AI	4096	$0.83	55.0
13	Yi-Lightning 1.5B	01.AI	4096	$0.54	50.0
14	Yi-Large 1.5B	01.AI	8192	$0.42	46.8

Best 01.AI models

multimodal

Yi-Lightning

Yi-Lightning is a multimodal model from 01.AI. It offers a 32,768-token context window, costs $4.22 per million input tokens and $23.07 per million output tokens, and averages 77.2 across the index's benchmark suite.

$4.22 in · 32,768 context · 77.2 avg multimodal

Yi-Lightning Instruct

Yi-Lightning Instruct is a multimodal model from 01.AI. It offers a 128,000-token context window, costs $4.16 per million input tokens and $22.74 per million output tokens, and averages 76.5 across the index's benchmark suite.

$4.16 in · 128,000 context · 76.5 avg multimodal

Yi-Lightning Chat

Yi-Lightning Chat is a multimodal model from 01.AI. It offers a 32,768-token context window, costs $3.79 per million input tokens and $19.14 per million output tokens, and averages 75.5 across the index's benchmark suite.

$3.79 in · 32,768 context · 75.5 avg multimodal

Yi-Large

Yi-Large is a multimodal model from 01.AI. It offers a 32,768-token context window, costs $3.40 per million input tokens and $13.35 per million output tokens, and averages 73.5 across the index's benchmark suite.

$3.40 in · 32,768 context · 73.5 avg multimodal

Yi-Large Chat

Yi-Large Chat is a multimodal model from 01.AI. It offers a 65,536-token context window, costs $3.49 per million input tokens and $13.97 per million output tokens, and averages 73.5 across the index's benchmark suite.

$3.49 in · 65,536 context · 73.5 avg

How 01.AI fits

01.AI has 14 models in the index, of which 14 are open weights. The average input price across the lineup is $2.39 per million tokens, and the average output price is $10.97 per million tokens. The strongest model by average benchmark score is yi-lightning.

Use the table above to compare individual models, or open a model page for its full benchmark breakdown. If you are choosing between providers, start with the comparison pages and then check context limits and licence terms.

FAQ

How many 01.AI models are in the index?

01.AI has 14 models in this index, of which 14 are open weights.

What is the cheapest 01.AI model?

Yi-Large 1.5B is the cheapest 01.AI model by input price at $0.42 per million tokens.

What is the best 01.AI model?

Yi-Lightning has the highest average benchmark score in the 01.AI lineup at 77.2.

Are 01.AI models open weights?

14 of the 14 01.AI models in this index are open weights. The rest are proprietary.

Where is 01.AI based?

01.AI was founded in 2023 and is headquartered in Beijing, China.