LongCat 2.0

LongCat 2.0 is Meituan's language model for code understanding, repository changes, and tasks that require multiple steps.

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compare models

input · usd / 1m tok

$0.30

output · usd / 1m tok

$1.20

context window

1.05mtokens

modalities · in → out

pricing

base api ratesusd per 1m tokens

input: $0.30
output: $1.20
cache read: $0.006

providers

AtlasCloud hosts LongCat 2.0. Impossibl routes your request intelligently and handles failover automatically when a provider is down.

AtlasCloud

specifications

takes text in, gives text outmeituan/longcat-2.0

creatormeituan
model typeText generation
context window1,048,756 tokens
maximum outputnot published
input
takes text in, gives text out
outputtext
tool callingnot verified
endpoint/v1/chat/completions

unknown means the public catalog does not establish that fact. a model's documented capabilities can differ from what a particular api supports. see the model documentation for integration details.

try it · your prompt, this model, live

# responses API
import os
from openai import OpenAI

client = OpenAI(
    api_key=os.environ["IMPOSSIBL_API_KEY"],
    base_url="https://api.impossibl.com/v1",
)

resp = client.responses.create(
    model="meituan/longcat-2.0",
    input="▌",
)
print(resp.output_text)

edit the prompt, then run

# responses API
import os
from openai import OpenAI

client = OpenAI(
    api_key=os.environ["IMPOSSIBL_API_KEY"],
    base_url="https://api.impossibl.com/v1",
)

resp = client.responses.create(
    model="meituan/longcat-2.0",
    input="▌",
)
print(resp.output_text)

edit the prompt, then run

benchmarks

benchmark results are not available for this model yet.

compare LongCat 2.0 with other models

frontier labs and open weights, best-ranked firstusd / 1m tok · in / out

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openai/gpt-6-astra$10.00 / $50.00compare →
meta/muse-spark-1.3$1.25 / $4.25compare →
zai/glm-5.3$1.40 / $4.40compare →

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frequently asked questions

What is LongCat 2.0?

LongCat 2.0 is Meituan's language model for code understanding, repository changes, and tasks that require multiple steps. Its sparse mixture-of-experts architecture supports text generation and tool use for coding assistants and other agents.

How much does LongCat 2.0 cost?

LongCat 2.0 costs $0.30 per million input tokens and $1.20 per million output tokens through the Impossibl API. Cache reads cost $0.006 per million tokens. All rates are in USD.

view the pricing table ↑

What is the context length of LongCat 2.0?

LongCat 2.0 has a 1,048,756-token context window through the Impossibl API.

What inputs and outputs does LongCat 2.0 support?

LongCat 2.0 accepts text as input. LongCat 2.0 returns text.

How do I use LongCat 2.0 through an API?

LongCat 2.0 is available through the Impossibl API. Use meituan/longcat-2.0 as the model identifier with /v1/chat/completions. The quickstart explains how to create an API key and send your first request.

follow the api quickstart →

this page describes LongCat 2.0 as listed by the impossibl public api. prices and availability come from that catalog, refreshed here every five minutes. this is an impossibl offering, not a comparison of independent hosting-provider quotes. model descriptions and release dates, where available, use the creator sources linked under the answers above.

view the source catalog ↗model as markdown ↗report a correction →