LongCat-2.0
Released Jun 29, 2026 · knowledge cutoff unpublished
- Status
- Superseded
- Location
- China
- Modality
- Text
- Context window
- 1M
- Max output
- 262K
- Speed
- —
- Price ($/MTok in / out)
- $0.75 / $2.95
- Cost per task
- $0.12
- Open weights
- Yes
Benchmarks3 of 8 reported
GPQA Diamond
Terminal-Bench 2.1
Humanity's Last Exam
MMLU-Pro
SWE-bench Verified
AIME (latest)
LMArena Elo
ARC-AGI-2
Strengths & weaknesses
Strengths
- Trained and served end to end on domestic Chinese accelerators, with no Nvidia silicon anywhere in the loop
- Spent two months at the top of OpenRouter as the anonymous 'Owl Alpha' before anyone knew whose it was — the reception came before the branding
- Careful and thorough on review-style work where you want it to explain what it found
- MIT-licensed at trillion-parameter scale, with a clean commercial grant
Weaknesses
- Verbose and slow enough to be awkward for conversational pairing — it suits long unattended runs better
- Hands-on comparisons put its generated apps a generation behind GLM 5.2's: rougher and buggier despite benchmark parity
- Fabricates readily on factual questions, and knowledge coverage lags its agentic ability badly
Announced 2026-06-29 on GitHub, Hugging Face and Meituan's own platform (some coverage dates it 2026-06-30); it had been running anonymously on OpenRouter as 'Owl Alpha' for roughly two months beforehand. GPQA Diamond 88.9 and Terminal-Bench 2.1 70.8 are Meituan's in-house harness figures — Artificial Analysis independently measures 78.0 and 50.2 on the same two benchmarks, and HLE 32.1% is Artificial Analysis' no-tools run since Meituan published none. Also reported: SWE-bench Pro 59.5%, SWE-bench Multilingual 77.3%, FORTE 73.2%, BrowseComp 79.9%; no SWE-bench Verified, MMLU-Pro, AIME or ARC-AGI-2 figure exists. Pricing is LongCat's standard API rate, with a launch promotion at $0.30/$1.20. Max output is the OpenRouter endpoint spec; some coverage cites 131,072. Meituan says only 'AI ASIC superpods' — the widely repeated 50,000 Huawei Ascend 910C figure comes from Chinese media, not from Meituan.
For developers
API model strings
Not researched
Licence
Not researched
Retirement
No retirement announced
Lineage
No recorded predecessor