LongCat 2.0 vs GPT-5

rates, context and capabilities side by side on the impossibl api, and what the same workload costs on each.

the models at a glance: base rates, context window and modalities
specificationLongCat 2.0

meituan/longcat-2.0

GPT-5

openai/gpt-5

input · usd / 1m tok$0.30$1.25
output · usd / 1m tok$1.20$10.00
context window1.05mtokens400ktokens
modalities · in → out

takes text in, gives text out

takes text and image in, gives text out

pricing

base api rates by model
base api rates · usd per 1m tokensLongCat 2.0

meituan/longcat-2.0

GPT-5

openai/gpt-5

input$0.30$1.25
output$1.20$10.00
cache read$0.006$0.125

the estimate below prices one workload at these rates on every model.

specifications

published specifications by model
as publishedLongCat 2.0

meituan/longcat-2.0

GPT-5

openai/gpt-5

creatormeituanOpenAI
model typeText generationText generation
context window1,048,756tokens400,000tokens
input

takes text in, gives text out

takes text and image in, gives text out

outputtexttext
tool callingnot verifiednot verified
releasednot publishedaug 7, 2025
endpoint/v1/chat/completions/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.

benchmarks

benchmark scores by model, primary tested configuration
primary configurationLongCat 2.0

meituan/longcat-2.0

no benchmarks yet

GPT-5

openai/gpt-5

high

intelligence index · gateway ranknot measured23.0#53 of 90
coding indexnot measured37.8#47 of 60
omnisciencenot measured-8.7#48 of 86
gpqanot measured85.4%#49 of 88
humanity’s last examnot measured28.5%#46 of 89
terminal-bench v2.1not measured35.2%#46 of 57
aime 2025not measured94.3%
tau2not measured84.8%
livecodebenchnot measured84.6%
aa-lcrnot measured78.2%
mmmu-pronot measured74.2%
ifbenchnot measured73.1%
terminal-bench hardnot measured32.6%
tau bankingnot measured22.1%
critptnot measured5.7%

GPT-5 source ↗

each column describes the tested configuration named under the model; performance and costs can differ on impossibl. a score one model was not measured on is left blank rather than scored zero. indices are ranked against every model on the gateway with one. last checked 2026-09-10.

estimate your cost

one token workload, priced on every model at the published rates, in usd. change the numbers to match yours.

token workload

total input, including cached tokens

include billable reasoning tokens

the same token usage in each request

a subset of total input, never additional tokens

LongCat 2.0

meituan/longcat-2.0

estimated usage cost

$0.90

1,000 requests × (1,000 uncached input × $0.30 + 500 output × $1.20) / 1,000,000 = $0.90

base rates; no context pricing tiers are published.

GPT-5

openai/gpt-5

estimated usage cost

$6.25

1,000 requests × (1,000 uncached input × $1.25 + 500 output × $10.00) / 1,000,000 = $6.25

base rates; no context pricing tiers are published.

estimates use published impossibl api usage rates. configured billing adjustments, funding fees, taxes, and custom workspace rates are excluded and may change the final amount.

image and audio usage, cache creation, and additional tool charges are excluded. reasoning tokens count as billable output, even when they are not visible in the response.

summary

LongCat 2.0 and GPT-5 are available through the Impossibl API. they share the /v1/chat/completions endpoint; the model identifier selects the model for a request.

LongCat 2.0 is created by meituan. It has a 1,048,756-token context window. Base API pricing (USD): $0.30 per million input tokens; $1.20 per million output tokens.

GPT-5 is created by OpenAI. It has a 400,000-token context window. Base API pricing (USD): $1.25 per million input tokens; $10.00 per million output tokens.

LongCat 2.0GPT-5

this page compares LongCat 2.0 vs GPT-5 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.

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