LongCat 2.0
LongCat 2.0 is a sparse mixture-of-experts language model from Meituan, with 48B active parameters out of 1.6T total. It is suited for coding, repository-level changes, long-horizon problem solving, and agentic...
Updated 23 min ago · first seen 11 Sept 2026
model_01M294WVTD3Q7NCQ36H0BBTV30
- Context
- 1M tokens
- T2 · 23 min ago
- Released
- 20 Jul 2026
- T2 · 2 h ago
Specification
- Release date
- 20 Jul 2026
Source:OpenRouter public model & pricing listingT2observed 2 h agomedium
- Openness
- open-weights
Source:Artificial AnalysisT2observed 23 min agomedium
- Context window
- 1M tokens
Source:Artificial AnalysisT2observed 23 min agomedium
- Max output
- 262.1K tokens
Source:OpenRouter public model & pricing listingT2observed 2 h agomedium
- Modalities
- text
Source:OpenRouter public model & pricing listingT2observed 2 h agomedium
- Input modalities
- text
Source:OpenRouter public model & pricing listingT2observed 2 h agomedium
- Output modalities
- text
Source:OpenRouter public model & pricing listingT2observed 2 h agomedium
- Hugging Face repo
- meituan-longcat/LongCat-2.0
Source:OpenRouter public model & pricing listingT2observed 2 h agomedium
- Openrouter id
- meituan/longcat-2.0
Source:OpenRouter public model & pricing listingT2observed 2 h agomedium
- Supported parameters
- frequency_penalty, include_reasoning, logit_bias, max_tokens, min_p, presence_penalty, reasoning, repetition_penalty, seed, stop, temperature, tool_choice, tools, top_k, top_p
Source:OpenRouter public model & pricing listingT2observed 2 h agomedium
Each value shows its source, tier and observation time. Conflicting claims are kept side by side and flagged — never averaged. How AI Atlas records facts →
Provenance
Attributed facts
14
Source tiers
T214
Freshest observation
23 min ago
Conflicts
None
Modalities
- Modalities
- text
- Input
- text
- Output
- text
Capabilities
Tool calling
Yes
OpenRouter public model & pricing listing · T2
Structured output
No
OpenRouter public model & pricing listing · T2
Reasoning
Yes
OpenRouter public model & pricing listing · T2
Vision
Unavailable
Audio
Unavailable
Fine-tuning available
Unavailable
- Context window
- 1M tokens
Source:Artificial AnalysisT2observed 23 min agomedium
- Max output
- 262.1K tokens
Source:OpenRouter public model & pricing listingT2observed 2 h agomedium
| Benchmark | Score | Metric | Config | Evaluated | Source |
|---|---|---|---|---|---|
| Artificial Analysis Intelligence Index | 19.69 | index | aa_slug=longcat-2-0 · version=4.3 · estimated=false | — | artificialanalysis.aiT2 |
| GPQA | 77.98% | accuracy | aa_slug=longcat-2-0 · variant=GPQA Diamond · evaluator=Artificial Analysis · index_version=4.3 | — | artificialanalysis.aiT2 |
| Humanity's Last Exam | 33.69% | accuracy | aa_slug=longcat-2-0 · evaluator=Artificial Analysis · index_version=4.3 | — | artificialanalysis.aiT2 |
| SciCode | 36.34% | accuracy | aa_slug=longcat-2-0 · evaluator=Artificial Analysis · index_version=4.3 | — | artificialanalysis.aiT2 |
| Terminal-Bench | 0% | accuracy | aa_slug=longcat-2-0 · variant=v4.0 · evaluator=Artificial Analysis · index_version=4.3 | — | artificialanalysis.aiT2 |
| Terminal-Bench | 50.19% | accuracy | aa_slug=longcat-2-0 · variant=v2.1 · evaluator=Artificial Analysis · index_version=4.3 | — | artificialanalysis.aiT2 |
Scores are reported as published, with their evaluation configuration (harness, prompting, judge). Results with different configs are not directly comparable — see methodology.
Current prices
| Provider | Input / 1M | Output / 1M | Cached in | Batch in / out | Context | Observed | Source |
|---|---|---|---|---|---|---|---|
| OpenRoutermeituan/longcat-2.0 | $0.30 | $1.2 | $0.006 | — | 1.05M | 28 min ago | openrouter.aiT2 |
USD per 1M tokens as published by each provider (USD). Rows are append-only: every change is kept in the history below.
Available through 1
Price history
Input price · USD / 1M tokens
Output price · USD / 1M tokens
- OpenRouter
No hardware estimate available
No lineage recorded
Papers 0
No papers linked yet.
Repositories 0
No repositories linked yet.
As of
Rewind the record: see this entity's attributes exactly as AI Atlas knew them on a given day.
Claim history · Context window
Context windowcontext_length2
| Value | Valid from → to | Status | Source | Confidence | Extractor |
|---|---|---|---|---|---|
| 1M tokens | → current | current | Artificial AnalysisT2 | medium | deterministic |
| 1.05M tokens | → | superseded | OpenRouter public model & pricing listingT2 | medium | deterministic |
Claims are temporal and append-only: a new observation closes the previous claim (valid_to) instead of overwriting it. Conflicting claims from different sources are kept side by side and flagged — never averaged. Methodology →
LongCat 2.0 scores 50.19% on Terminal-Bench
artificial_analysisLongCat 2.0 scores 33.69% on Humanity's Last Exam
artificial_analysisLongCat 2.0 scores 19.69 on Artificial Analysis Intelligence Index
artificial_analysisLongCat 2.0: context length changed from 1048756 to 1000000
Context window1.05M tokens→1M tokensartificial_analysisOpenRouter lists LongCat 2.0 at $0.3 in / $1.2 out per 1M tokens
openrouter
| Source | Document | Type | Tier | Last observed | Snapshots |
|---|---|---|---|---|---|
| Artificial Analysis | artificialanalysis.ai/leaderboards/models | leaderboard | T2· Quality secondary | 23 min ago | 1 |
| OpenRouter public model & pricing listing | openrouter.ai/api/v1/models | catalogue | T2· Quality secondary | 28 min ago | 2 |
Tier 1 = official/primary, 2 = quality secondary, 3 = community, 4 = unverified. Every snapshot is archived; see all sources and the methodology.