Data points: 76
Model compare
The readout for DeepSeek V4 Flash and Longcat 2.0, before the detailed comparison sheet.
Weighted outcome: Longcat 2.0. Benchmark capability categories carry 80%, while price, API performance, and availability carry 20%.
Decision read
Longcat 2.0
Longcat 2.0 has the higher weighted result; Model A / B score 20 to 80.
Evidence depth
76 data points
Includes 6 benchmark rows, 0 audit samples, and 6 provider examples.
Selection signal
Start with Longcat 2.0
The charts below split 12 high-signal samples across speed, scores, and audit health.
Switch either side of this report to compare another model with the same LMSpeed data pipeline.
Select a different model to open a new comparison URL.
This report only uses LMSpeed data for DeepSeek V4 Flash and Longcat 2.0: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Model compare | DeepSeek V4 Flash | Longcat 2.0 |
|---|---|---|
| Overall leader | Contender | Leading |
| Weighted overall score | 20.0 pts | 80.0 pts |
| Benchmark category leads | 0 categories | 2 categories |
| Operational advantages | Cheapest input price, Free providers, Provider coverage | No data |
| Context window | 1.0M tokens | 1.0M tokens |
| Max output | 393.2K tokens | 262.1K tokens |
| Modalities | Input Text Output Text | Input Text |
The overall result weights benchmark capability categories at 80% and price, API speed/latency, and availability at 20%. Recent test volume does not affect the winner, and missing benchmark categories are excluded.
| Model compare | DeepSeek V4 Flash | Longcat 2.0 |
|---|---|---|
| Developer | DeepSeek | Meituan |
| Released | Apr 2026 | Jul 2026 |
| Parameters | No data | No data |
| Tokenizer | DeepSeek | Other |
| Knowledge cutoff | No data | No data |
| OpenRouter ID | deepseek/deepseek-v4-flash | meituan/longcat-2.0 |
| References | No data | No data |
This report only uses LMSpeed data for DeepSeek V4 Flash and Longcat 2.0: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
DeepSeek V4 Flash
DeepSeek V4 Flash has these operational advantages: Cheapest input price, Free providers, Provider coverage.
Longcat 2.0
Longcat 2.0 leads these benchmark categories: Coding, Reasoning.
Third-party benchmark profile synced into LMSpeed; only metrics available for both models are shown.
Compare benchmark category scores on a 0-100 scale. Select a category to inspect the gap.
Avg. score
DeepSeek V4 Flash
45.5
Avg. score
Longcat 2.0
52.7
DeepSeek V4 Flash
Longcat 2.0 leads by 5.2
Longcat 2.0 leads by 4.1
DeepSeek V4 Flash
DeepSeek V4 Flash
No data
No data
DeepSeek V4 Flash
Metric-level scores with benchmark source, rank depth, confidence, error, and evaluation date where available.
DeepSeek V4 Flash
winner$0.280/M
Rank #7/169 · confidence 4
Longcat 2.0
$2.95/M
Rank #87/169 · confidence 4
DeepSeek V4 Flash
winner$0.175/M
Rank #12/169 · confidence 4
Longcat 2.0
$1.30/M
Rank #91/169 · confidence 4
DeepSeek V4 Flash
winner$0.140/M
Rank #18/169 · confidence 4
Longcat 2.0
$0.750/M
Rank #97/169 · confidence 4
DeepSeek V4 Flash
27.8%
Rank #41/193 · confidence 4
Longcat 2.0
winner32.1%
Rank #33/193 · confidence 4
DeepSeek V4 Flash
winner86.7%
Rank #40/194 · confidence 4
Longcat 2.0
78.0%
Rank #88/194 · confidence 4
DeepSeek V4 Flash
winner42.0%
Rank #56/191 · confidence 4
Longcat 2.0
35.4%
Rank #115/191 · confidence 4
Latest completed audits from shared providers, with four safety and integrity score groups plus report links.
| Provider | DeepSeek V4 Flash | Longcat 2.0 |
|---|---|---|
| No completed audits are available from shared providers yet. | ||
Speed aggregates and input/output pricing share each provider row for real API selection and migration cost checks.
| Provider | DeepSeek V4 Flash | Longcat 2.0 |
|---|---|---|
10 tests | DeepSeek V4 Flash speed / latency 143 tok/s / 1761ms input / output No data | Longcat 2.0 speed / latency N/A / N/A input / output No data |
5 tests | DeepSeek V4 Flash deepseek-v4-flash speed / latency 49 tok/s / 2639ms input / output $0.950/M/$1.90/M | Longcat 2.0 meituan-longcat/LongCat-2.0 speed / latency N/A / N/A input / output $535.71/M |
0 tests | DeepSeek V4 Flash deepseek-v4-flash speed / latency N/A / N/A input / output $1.00/M/$2.00/M | Longcat 2.0 meituan/longcat-2.0 speed / latency N/A / N/A input / output $7.50/M |
0 tests | DeepSeek V4 Flash speed / latency N/A / N/A input / output No data | Longcat 2.0 speed / latency N/A / N/A input / output No data |
0 tests | DeepSeek V4 Flash speed / latency N/A / N/A input / output No data | Longcat 2.0 speed / latency N/A / N/A input / output No data |
DeepSeek V4 Flash deepseek-v4-flash speed / latency No data input / output $0.625/M/$1.25/M | Longcat 2.0 LongCat-2.0-Preview speed / latency No data input / output $749250.00/M |
Weighted outcome: Longcat 2.0. Benchmark capability categories carry 80%, while price, API performance, and availability carry 20%.
Output
| Features | Text inputText outputTool callingStructured outputsJSON modeReasoning | Text inputText outputTool callingReasoning |
|---|
