Compare / head-to-head
Claude 3.5 SonnetvsLongCat 2.0
LongCat 2.0 leads 1 of 1 shared benchmark. LongCat 2.0 has the larger context window (1M tokens).
Benchmarks from cited public sources; pricing from official pages; status from official provider feeds.
Shared benchmarks
0 – 1
LongCat 2.0 leads
Cheaper per token
—
list price, input + output
Larger context
LongCat 2.0
1M tokens
Provider uptime (30d)
100% · —
Anthropic · Meituan LongCat
Claude 3.5 Sonnet
Anthropic · released 2024-10-22
textvision
LongCat 2.0
Meituan LongCat · released 2026-06-30
text
- Context
- 1M
- Max out
- —
- Input /1M
- —
- Output /1M
- —
- Cached /1M
- —
- Scores
- 10 · 4 core
Quality
Benchmark matrix
1 shared · 3 only Claude 3.5 Sonnet · 9 only LongCat 2.0| Benchmark | Claude 3.5 Sonnet | LongCat 2.0 | Δ | Edge |
|---|---|---|---|---|
| Reported by both · 1 | ||||
| GPQA Diamond | 55.3% ↗epoch | 88.9% ↗ | -33.6 pt | LongCat 2.0 |
| Only Claude 3.5 Sonnet reports · 3 | ||||
| SWE-bench Verified | 49% ↗ | not reported | — | — |
| AIME 2025 | 3.3% ↗matharena | not reported | — | — |
| OTIS Mock AIME 2024-2025 (Epoch AI run) | 8.5% ↗epoch | not reported | — | — |
| Only LongCat 2.0 reports · 9 | ||||
| BrowseComp | not reported | 79.9% ↗ | — | — |
| FORTE | not reported | 73.2% ↗ | — | — |
| IFEval | not reported | 90% ↗ | — | — |
| IMO-AnswerBench | not reported | 81.8% ↗ | — | — |
| RWSearch | not reported | 78.8% ↗ | — | — |
| SWE-bench Multilingual | not reported | 77.3% ↗ | — | — |
| SWE-bench Pro | not reported | 59.5% ↗ | — | — |
| Terminal-Bench 2.1 | not reported | 70.8% ↗ | — | — |
| Writing Bench | not reported | 83.8% ↗ | — | — |
Scores tagged "epoch" or "matharena" are independent runs, used only where the lab has not published its own; ⚠ marks rows MathArena flags as released after the competition. Higher is better on every row. Δ is Claude 3.5 Sonnet minus LongCat 2.0 in the benchmark's own unit. "Not reported" means the lab has not published that figure; it is not a zero. ↗ opens the source.
Specs & pricing
Side by side
Official pricing pages and model cards| Spec | Claude 3.5 Sonnet | LongCat 2.0 | Edge |
|---|---|---|---|
| Context window | 200K tokens | 1M tokens | LongCat 2.0 |
| Max output | 8K tokens | — | — |
| Input price / 1M | $3 ↗ | — | — |
| Output price / 1M | $15 ↗ | — | — |
| Cached input / 1M | $0.3 ↗ | — | — |
| Input + output / 1M Lower is cheaper. List prices; batch, tool and regional fees excluded. | $18 | — | — |
| Modalities | text · vision | text | Claude 3.5 Sonnet |
| Released | 2024-10-22 | 2026-06-30 | — |
| Cited benchmark scores | 4 | 10 | — |
Reliability
Provider status
Last 60 days · refreshed daily on this page · live on /statusMore matchups
Claude 3.5 Sonnet vs …
Models sharing the most benchmarksMore matchups
LongCat 2.0 vs …
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Which one wins on your data?
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