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LongCat-2.0

Meituan LongCat-2.0, a reasoning model with tool calling and a 1M-token context window

Source-linked longcat Closed weights Released 2026-06-30
API data Report
Input modalitiesT
Output modalitiesT
Input price$0.3/1M tokens
Output price$1.2/1M tokens
Context window1M
Max output131.072K
Overview

Capabilities and specifications

✓ Reasoning Yes
✓ Tool calling Yes
× Structured output No
× Attachments No
× Vision input No
× Open weights No
Creator
Meituan
Model family
longcat
Knowledge cutoff
Not documented
License
Not documented
Release date
2026-06-30
Model ID
meituan/longcat-2.0
Inference availability

Provider pricing and availability

Provider-specific identifiers, limits, and prices per million tokens.

Report a price
Providers offering LongCat-2.0
ProviderProvider model IDContextInputOutputCache readCapabilitiesSource
OpenRouter meituan/longcat-2.0 1.04876M $0.3 $1.2 $0.006 ReasoningTools Docs
LongCat LongCat-2.0 1M $0.75 $2.95 $0.015 ReasoningTools Docs

Capability badges appear only when the provider catalog explicitly lists support.

Serving quality

Performance and reliability

Observed serving measurements stay separate from model specifications and are never estimated from price or model size.

Throughput Not reported

Generation speed; higher is faster.

Latency / TTFT Not reported

Time until the first output token arrives.

Uptime Not reported

Successful requests over a measured period.

Performance varies by inference provider, region, and load. Provider-level measurements appear only when a source reports them.

Published evaluations

Benchmarks

Raw results remain attached to their original source and version.

Benchmark registry
BrowseComp - Unversioned - accuracyTop 8 reported models
GPT-5.6 Sol
90.4
GPT-5.5 Pro
90.1
GPT-5.4 Pro
89.3
GPT-5.6 Terra
87.5
Claude Sonnet 5
84.7
GPT-5.5
84.4
MiniMax-M3
83.5
LongCat-2.0
79.9
FORTE - Unversioned - success rateTop 1 reported models
LongCat-2.0
73.2
GPQA Diamond - Unversioned - accuracyTop 8 reported models
GPT-5.6 Sol
94.6
GPT-5.4 Pro
94.4
Gemini 3.1 Pro Preview
94.3
Claude Opus 4.7
94.2
GPT-5.5
93.6
GPT-5.6 Terra
92.9
GPT-5.4
92.8
LongCat-2.0
88.9
IFEval - Unversioned - accuracyTop 1 reported models
LongCat-2.0
90.0
SWE-Bench Multilingual - Unversioned - resolve rateTop 5 reported models
Claude Sonnet 5
78.3
Qwen3.7 Max
78.3
Grok 4.5
78.0
LongCat-2.0
77.3
Nemotron 3 Ultra 550B A55B
67.7
SWE-Bench Pro - Unversioned - resolve rateTop 8 reported models
Claude Fable 5
80.3
Claude Opus 4.8
69.2
Grok 4.5
64.7
GPT-5.6 Sol
64.6
Claude Opus 4.7
64.3
GPT-5.6 Terra
63.4
Claude Sonnet 5
63.2
LongCat-2.0
59.5
Terminal-Bench - 2.1 - success rateTop 7 reported models
GPT-5.6 Sol
88.8
Claude Fable 5
88.0
GPT-5.6 Terra
87.4
GPT-5.6 Luna
84.7
Grok 4.5
83.3
Muse Spark 1.1
80.0
LongCat-2.0
70.8
Catalog activity

Recent record changes

Detected changes from successful source imports.

Full change log
Max Output Tokens262144 → 131072
Context Length1048756 → 1000000
Max Output Tokens131072 → 262144
Context Length1000000 → 1048756
Max Output Tokens262144 → 131072
Context Length1048756 → 1000000
Max Output Tokens131072 → 262144
Context Length1000000 → 1048756
Public API

Use this record

Fetch the complete source-linked model record without an API key.

API documentation
Endpoint
GET https://www.modelbench.lol/api/v1/models/meituan/longcat-2.0
curl
curl "https://www.modelbench.lol/api/v1/models/meituan/longcat-2.0"