Compare / head-to-head
DeepSeek V4.1 FlashvsLongCat 2.0
DeepSeek V4.1 Flash leads 2 of 2 shared benchmarks. Both offer a 1M-token context window.
Benchmarks from cited public sources; pricing from official pages; status from official provider feeds.
Shared benchmarks
2 – 0
DeepSeek V4.1 Flash leads
Cheaper per token
—
list price, input + output
Larger context
Tie
both 1M tokens
Provider uptime (30d)
100% · —
DeepSeek · Meituan LongCat
DeepSeek V4.1 Flash
DeepSeek · released 2026-09-10
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
2 shared · 1 only DeepSeek V4.1 Flash · 8 only LongCat 2.0| Benchmark | DeepSeek V4.1 Flash | LongCat 2.0 | Δ | Edge |
|---|---|---|---|---|
| Reported by both · 2 | ||||
| GPQA Diamond | 90.9% ↗ | 88.9% ↗ | +2 pt | DeepSeek V4.1 Flash |
| Terminal-Bench 2.1 | 90.6% ↗ | 70.8% ↗ | +19.8 pt | DeepSeek V4.1 Flash |
| Only DeepSeek V4.1 Flash reports · 1 | ||||
| DeepSWE v1.1 | 74.2% ↗ | not reported | — | — |
| Only LongCat 2.0 reports · 8 | ||||
| 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% ↗ | — | — |
| 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 DeepSeek V4.1 Flash 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 | DeepSeek V4.1 Flash | LongCat 2.0 | Edge |
|---|---|---|---|
| Context window | 1M tokens | 1M tokens | Tie |
| Max output | 384K tokens | — | — |
| Input price / 1M | $0.14 ↗ | — | — |
| Output price / 1M | $0.28 ↗ | — | — |
| Cached input / 1M | $0.003 ↗ | — | — |
| Input + output / 1M Lower is cheaper. List prices; batch, tool and regional fees excluded. | $0.42 | — | — |
| Modalities | text · vision | text | DeepSeek V4.1 Flash |
| Released | 2026-09-10 | 2026-06-30 | — |
| Cited benchmark scores | 3 | 10 | — |
Reliability
Provider status
Last 60 days · refreshed daily on this page · live on /statusMore matchups
DeepSeek V4.1 Flash vs …
Models sharing the most benchmarksMore matchups
LongCat 2.0 vs …
Models sharing the most benchmarksBuilt by Respan
Which one wins on your data?
Public benchmarks are a starting point. Run DeepSeek V4.1 Flash and LongCat 2.0 on your own prompts with Respan evals, or route to either through one gateway key with automatic failover.