Data points: 139
Model compare
The readout for DeepSeek V4 Flash and GPT-5.2, before the detailed comparison sheet.
Weighted outcome: GPT-5.2. Benchmark capability categories carry 80%, while price, API performance, and availability carry 20%.
Decision read
GPT-5.2
GPT-5.2 has the higher weighted result; Model A / B score 8 to 92.
Evidence depth
139 data points
Includes 27 benchmark rows, 4 audit samples, and 10 provider examples.
Selection signal
Start with GPT-5.2
The charts below split 41 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 GPT-5.2: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Model compare | DeepSeek V4 Flash | GPT-5.2 |
|---|---|---|
| Overall leader | Contender | Leading |
| Weighted overall score | 8.0 pts | 92.0 pts |
| Benchmark category leads | 0 categories | 6 categories |
| Operational advantages | Cheapest input price, Average speed | First-token latency, Free providers, Provider coverage |
| Context window | 1.0M tokens | 400K tokens |
| Max output | 393.2K tokens | 128K tokens |
| Modalities | Input Text Output Text | Input File |
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 | GPT-5.2 |
|---|---|---|
| Developer | DeepSeek | OpenAI |
| Released | Apr 2026 | Dec 2025 |
| Parameters | No data | No data |
| Tokenizer | DeepSeek | GPT |
| Knowledge cutoff | No data | No data |
| OpenRouter ID | deepseek/deepseek-v4-flash | openai/gpt-5.2 |
| References | No data | No data |
This report only uses LMSpeed data for DeepSeek V4 Flash and GPT-5.2: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
DeepSeek V4 Flash
DeepSeek V4 Flash has these operational advantages: Cheapest input price, Average speed.
GPT-5.2
GPT-5.2 is stronger in benchmark categories (Agents, Coding, Reasoning, Knowledge, Math) and operational dimensions (First-token latency, Free providers, Provider coverage).
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
45.4
Avg. score
GPT-5.2
52.9
GPT-5.2 leads by 0.9
GPT-5.2 leads by 12.1
GPT-5.2 leads by 3.1
GPT-5.2 leads by 18.4
GPT-5.2 leads by 19.3
No data
GPT-5.2
GPT-5.2 leads by 0.7
Metric-level scores with benchmark source, rank depth, confidence, error, and evaluation date where available.
DeepSeek V4 Flash
winner56.0
Rank #41/84 · confidence 2 · eval date 2026-04-24
GPT-5.2
53.0
Rank #50/84 · confidence 3 · eval date 2025-12-11
DeepSeek V4 Flash
winner$0.280/M
Rank #7/162 · confidence 4
GPT-5.2
$14.00/M
Rank #133/162 · confidence 4
DeepSeek V4 Flash
winner$0.175/M
Rank #12/162 · confidence 4
GPT-5.2
$4.81/M
Rank #132/162 · confidence 4
DeepSeek V4 Flash
winner$0.140/M
Rank #17/162 · confidence 4
GPT-5.2
$1.75/M
Rank #120/162 · confidence 4
DeepSeek V4 Flash
63.0
Rank #53/89 · confidence 2 · eval date 2026-04-24
GPT-5.2
winner72.7
Rank #13/89 · confidence 3 · eval date 2025-12-11
DeepSeek V4 Flash
winner86.2%
Rank #15/125 · confidence 2 · eval date 2026-04-24
GPT-5.2
81.4%
Rank #54/125 · confidence 4
DeepSeek V4 Flash
7.1
Rank #29/73 · confidence 2 · eval date 2026-04-24
GPT-5.2
winner11.6
Rank #20/73 · confidence 3 · eval date 2025-12-11
DeepSeek V4 Flash
winner86.7%
Rank #36/188 · confidence 4
GPT-5.2
71.2%
Rank #110/188 · confidence 4
DeepSeek V4 Flash
winner27.8%
Rank #36/187 · confidence 4
GPT-5.2
7.3%
Rank #109/187 · confidence 4
DeepSeek V4 Flash
79.0
Rank #14/43 · confidence 2 · eval date 2026-04-24
GPT-5.2
winner80.0
Rank #12/43 · confidence 3 · eval date 2025-12-11
DeepSeek V4 Flash
44.9
Rank #41/96 · confidence 2 · eval date 2026-04-24
GPT-5.2
winner52.1
Rank #18/96 · confidence 3 · eval date 2025-12-11
DeepSeek V4 Flash
52.6
Rank #31/37 · confidence 2 · eval date 2026-04-24
GPT-5.2
winner55.6
Rank #25/37 · confidence 3 · eval date 2025-12-11
DeepSeek V4 Flash
46.8
Rank #47/65 · confidence 2 · eval date 2026-04-24
GPT-5.2
winner52.2
Rank #34/65 · confidence 3 · eval date 2025-12-11
DeepSeek V4 Flash
winner42.0%
Rank #52/185 · confidence 4
GPT-5.2
40.4%
Rank #64/185 · confidence 4
DeepSeek V4 Flash
winner81.6
Rank #6/56 · confidence 2 · eval date 2026-04-24
GPT-5.2
58.5
Rank #24/56 · confidence 3 · eval date 2025-12-11
DeepSeek V4 Flash
winner95.8
Rank #1/90 · confidence 2 · eval date 2026-04-24
GPT-5.2
79.7
Rank #39/90 · confidence 3 · eval date 2025-12-11
DeepSeek V4 Flash
60.1
Rank #40/55 · confidence 2 · eval date 2026-04-24
GPT-5.2
winner80.8
Rank #11/55 · confidence 3 · eval date 2025-12-11
DeepSeek V4 Flash
37.2
Rank #33/90 · confidence 2 · eval date 2026-04-24
GPT-5.2
winner43.8
Rank #16/90 · confidence 3 · eval date 2025-12-11
DeepSeek V4 Flash
89.4
Rank #27/96 · confidence 2 · eval date 2026-04-24
GPT-5.2
winner90.3
Rank #19/96 · confidence 3 · eval date 2025-12-11
DeepSeek V4 Flash
32.1
Rank #27/96 · confidence 2 · eval date 2026-04-24
GPT-5.2
winner35.4
Rank #21/96 · confidence 3 · eval date 2025-12-11
DeepSeek V4 Flash
40.3
Rank #27/99 · confidence 2 · eval date 2026-04-24
GPT-5.2
winner42.2
Rank #22/99 · confidence 3 · eval date 2025-12-11
DeepSeek V4 Flash
winner1233.0
Rank #33/66 · confidence 2 · eval date 2026-04-24
GPT-5.2
1219.0
Rank #35/66 · confidence 3 · eval date 2025-12-11
DeepSeek V4 Flash
winner79.2
Rank #5/86 · confidence 2 · eval date 2026-04-24
GPT-5.2
75.4
Rank #21/86 · confidence 3 · eval date 2025-12-11
DeepSeek V4 Flash
winner73.2
Rank #17/25 · confidence 2 · eval date 2026-04-24
GPT-5.2
65.8
Rank #19/25 · confidence 3 · eval date 2025-12-11
DeepSeek V4 Flash
winner54.4
Rank #18/50 · confidence 2 · eval date 2026-04-24
GPT-5.2
46.5
Rank #29/50 · confidence 3 · eval date 2025-12-11
DeepSeek V4 Flash
winner95.0
Rank #19/84 · confidence 2 · eval date 2026-04-24
GPT-5.2
84.8
Rank #44/84 · confidence 3 · eval date 2025-12-11
DeepSeek V4 Flash
winner46.7
Rank #37/53 · confidence 2 · eval date 2026-04-24
GPT-5.2
22.0
Rank #48/53 · confidence 3 · eval date 2025-12-11
Latest completed audits from shared providers, with four safety and integrity score groups plus report links.
| Provider | DeepSeek V4 Flash | GPT-5.2 |
|---|---|---|
Winner: DeepSeek V4 Flash | DeepSeek V4 Flash deepseek-v4-flash Audit score 92 1008484100 | GPT-5.2 gpt-5.2-2025-12-11 No audit yet |
Winner: DeepSeek V4 Flash | DeepSeek V4 Flash deepseek-v4-flash Audit score 92 10068100100 | GPT-5.2 gpt-5.2-2025-12-11 No audit yet |
Winner: DeepSeek V4 Flash | DeepSeek V4 Flash deepseek-v4-flash Audit score 85 846886100 | GPT-5.2 gpt-5.2-chat No audit yet |
Winner: DeepSeek V4 Flash | DeepSeek V4 Flash deepseek-v4-flash Audit score 84 787584100 | GPT-5.2 gpt-5.2 No audit yet |
Speed aggregates and input/output pricing share each provider row for real API selection and migration cost checks.
| Provider | DeepSeek V4 Flash | GPT-5.2 |
|---|---|---|
70 tests | DeepSeek V4 Flash speed / latency 59 tok/s / 29380ms input / output No data | GPT-5.2 speed / latency N/A / N/A input / output No data |
25 tests | DeepSeek V4 Flash speed / latency 83 tok/s / 5114ms input / output No data | GPT-5.2 speed / latency 71 tok/s / 2893ms input / output No data |
20 tests | DeepSeek V4 Flash speed / latency 47 tok/s / 10092ms input / output No data | GPT-5.2 speed / latency 52 tok/s / 2671ms input / output No data |
15 tests | DeepSeek V4 Flash speed / latency N/A / N/A input / output No data | GPT-5.2 speed / latency 56 tok/s / 1798ms input / output No data |
10 tests | DeepSeek V4 Flash speed / latency 31 tok/s / 7293ms input / output No data | GPT-5.2 speed / latency N/A / N/A input / output No data |
DeepSeek V4 Flash deepseek-ai/deepseek-v4-flash speed / latency No data input / output $0/request | GPT-5.2 gpt-5-2 speed / latency No data input / output $0.080/request | |
DeepSeek V4 Flash deepseek-ai/deepseek-v4-flash speed / latency No data input / output $0/request | GPT-5.2 gpt-5.2-2025-12-11 speed / latency No data input / output $15.00/M | |
DeepSeek V4 Flash deepseek-v4-flash speed / latency No data input / output $0/M/$0/M | GPT-5.2 gpt-5.2 speed / latency No data input / output $0.024/M | |
DeepSeek V4 Flash deepseek-v4-flash speed / latency No data input / output $0/M/$0/M | GPT-5.2 gpt-5.2 speed / latency No data input / output $0/M | |
DeepSeek V4 Flash deepseek-v4-flash speed / latency No data input / output $0/M/$0/M | GPT-5.2 gpt-5.2 speed / latency No data input / output $0.120/M |
Weighted outcome: GPT-5.2. Benchmark capability categories carry 80%, while price, API performance, and availability carry 20%.
Output
| Features | Text inputText outputTool callingStructured outputsJSON modeReasoning | Text inputImage inputFile inputText outputTool callingStructured outputsJSON modeReasoning |
|---|
