Data points: 111
The readout for DeepSeek V4 Flash and O3 Mini, before the detailed comparison sheet.
Decision read
DeepSeek V4 Flash
DeepSeek V4 Flash currently has the stronger profile, with verified wins split 5 to 1.
Evidence depth
111 data points
Includes 20 benchmark rows, 1 audit samples, and 10 provider examples.
Selection signal
Start with DeepSeek V4 Flash
The charts below split 31 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.
Model compare DeepSeek V4 Flash vs O3 Minideepseek-v4-flash-vs-o3-mini | Model A DeepSeek V4 Flash | Model B O3 Mini |
|---|---|---|
| Overall leader | Leading | Contender |
| Verified metric wins | 5 wins | 1 wins |
| Where it leads | Cheapest input price, Average speed, Free providers, Provider coverage, Recent tests |
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
68
Avg. score
O3 Mini
59.2
Selected category
Agents
DeepSeek V4 Flash leads by 30.3
Metric-level scores with benchmark source, rank depth, confidence, error, and evaluation date where available.
DeepSeek V4 Flash
winner70.0
Rank #23/82 · confidence 2 · eval date 2026-04-24
O3 Mini
55.0
Rank #43/82 · confidence 1 · eval date 2025-01-31
DeepSeek V4 Flash
winner$0.280/M
Rank #2/95 · confidence 4
O3 Mini
$4.40/M
Rank #56/95 · confidence 4
DeepSeek V4 Flash
winner$0.175/M
Rank #6/95 · confidence 4
O3 Mini
$1.93/M
Rank #57/95 · confidence 4
DeepSeek V4 Flash
winner$0.140/M
Rank #10/95 · confidence 4
O3 Mini
$1.10/M
Rank #58/95 · confidence 4
DeepSeek V4 Flash
winner86.4%
Rank #12/74 · confidence 2 · eval date 2026-04-24
O3 Mini
80.2%
Rank #42/74 · confidence 4
DeepSeek V4 Flash
winner27.8%
Rank #20/103 · confidence 4
O3 Mini
12.3%
Rank #52/103 · confidence 4
DeepSeek V4 Flash
winner86.7%
Rank #22/103 · confidence 4
O3 Mini
77.3%
Rank #54/103 · confidence 4
DeepSeek V4 Flash
winner88.4%
Rank #4/70 · confidence 2 · eval date 2026-04-24
O3 Mini
73.4%
Rank #23/70 · confidence 4
DeepSeek V4 Flash
winner78.6
Rank #11/28 · confidence 2 · eval date 2026-04-24
O3 Mini
49.3
Rank #26/28 · confidence 1 · eval date 2025-01-31
DeepSeek V4 Flash
winner81.6
Rank #14/69 · confidence 2 · eval date 2026-04-24
O3 Mini
48.5
Rank #45/69 · confidence 1 · eval date 2025-01-31
DeepSeek V4 Flash
winner38.6
Rank #23/59 · confidence 2 · eval date 2026-04-24
O3 Mini
6.8
Rank #54/59 · confidence 1 · eval date 2025-01-31
DeepSeek V4 Flash
winner39.8
Rank #24/61 · confidence 2 · eval date 2026-04-24
O3 Mini
17.9
Rank #54/61 · confidence 1 · eval date 2025-01-31
DeepSeek V4 Flash
winner42.0
Rank #30/63 · confidence 2 · eval date 2026-04-24
O3 Mini
39.9
Rank #39/63 · confidence 1 · eval date 2025-01-31
DeepSeek V4 Flash
winner42.0%
Rank #37/101 · confidence 4
O3 Mini
39.8%
Rank #49/101 · confidence 4
DeepSeek V4 Flash
winner27.8
Rank #17/63 · confidence 2 · eval date 2026-04-24
O3 Mini
8.7
Rank #42/63 · confidence 1 · eval date 2025-01-31
DeepSeek V4 Flash
winner86.7
Rank #19/63 · confidence 2 · eval date 2026-04-24
O3 Mini
74.8
Rank #44/63 · confidence 1 · eval date 2025-01-31
DeepSeek V4 Flash
winner37.4
Rank #24/66 · confidence 2 · eval date 2026-04-24
O3 Mini
19.0
Rank #51/66 · confidence 1 · eval date 2025-01-31
DeepSeek V4 Flash
winner61.8
Rank #33/67 · confidence 2 · eval date 2026-04-24
O3 Mini
60.7
Rank #36/67 · confidence 1 · eval date 2025-01-31
DeepSeek V4 Flash
winner95.6
Rank #9/58 · confidence 2 · eval date 2026-04-24
O3 Mini
28.7
Rank #51/58 · confidence 1 · eval date 2025-01-31
DeepSeek V4 Flash
60.6
Rank #24/69 · confidence 2 · eval date 2026-04-24
O3 Mini
60.6
Rank #24/69 · confidence 1 · eval date 2025-01-31
Latest completed audits from shared providers, with four safety and integrity score groups plus report links.
| Provider | DeepSeek V4 Flash | O3 Mini |
|---|---|---|
Winner: DeepSeek V4 Flash | DeepSeek V4 Flash deepseek-v4-flash Audit score 92 100 |
Speed aggregates and input/output pricing share each provider row for real API selection and migration cost checks.
| Provider | DeepSeek V4 Flash | O3 Mini |
|---|---|---|
25 tests | DeepSeek V4 Flash speed / latency N/A / N/A input / output No data |
This report only uses LMSpeed data for DeepSeek V4 Flash and O3 Mini: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Guidance | DeepSeek V4 Flash | O3 Mini |
|---|---|---|
| When to choose each model | DeepSeek V4 Flash DeepSeek V4 Flash is stronger when you prioritize Cheapest input price, Average speed, Free providers, Provider coverage, Recent tests. | O3 Mini O3 Mini is stronger when you prioritize First-token latency. |
TL;DR: DeepSeek V4 Flash leads across 111 verifiable data points, including pricing, speed, latency, benchmarks, and provider examples.
Continue from DeepSeek V4 Flash vs O3 Mini into nearby model comparisons with enough verified LMSpeed data.
| First-token latency |
| Model metadata | DeepSeek V4 Flash exposes 1.0M tokens; notable signals: Text input, Text output, Tool calling, Structured outputs. | O3 Mini exposes 200K tokens; notable signals: Text input, File input, Text output, Tool calling. |
|---|---|---|
| Developer | DeepSeek | OpenAI |
| Context window | 1.0M tokens | 200K tokens |
| Max output | 16.4K tokens | 100K tokens |
| Released | Apr 2026 | Feb 2025 |
| Modalities | Input Text Output Text | Input TextFile Output Text |
| Features | Text inputText outputTool callingStructured outputsJSON modeReasoning | Text inputFile inputText outputTool callingStructured outputsJSON modeReasoning |
| Parameters | No data | No data |
| Tokenizer | DeepSeek | GPT |
| Knowledge cutoff | No data | 2023-10-31 |
| OpenRouter ID | deepseek/deepseek-v4-flash | openai/o3-mini-high |
| References | No data | No data |
O3 Mini o3-mini No audit yet |
O3 Mini
speed / latency
66 tok/s / 6491ms
input / output
No data
Seamee API10 tests | DeepSeek V4 Flash speed / latency 143 tok/s / 1761ms input / output No data | O3 Mini speed / latency N/A / N/A input / output No data |
|---|
Sub2API10 tests | DeepSeek V4 Flash speed / latency 49 tok/s / 5413ms input / output No data | O3 Mini speed / latency N/A / N/A input / output No data |
|---|
YUNWU API10 tests | DeepSeek V4 Flash speed / latency 74 tok/s / 2820ms input / output No data | O3 Mini speed / latency N/A / N/A input / output No data |
|---|
向量引擎10 tests | DeepSeek V4 Flash speed / latency 54 tok/s / 3263ms input / output No data | O3 Mini speed / latency N/A / N/A input / output No data |
|---|
DeepSeek V4 Flash deepseek-v4-flash speed / latency No data input / output $0.019/M / $0.038/M | O3 Mini o3-mini-medium speed / latency No data input / output $0.151/M / $0.603/M |
DeepSeek V4 Flash DeepSeek-V4-Flash speed / latency No data input / output $0.020/M / $0.020/M | O3 Mini o3-mini-2025-01-31 speed / latency No data input / output $1.10/M / $4.40/M |
DeepSeek V4 Flash DeepSeek-V4-Flash speed / latency No data input / output $0.020/M / $0.020/M | O3 Mini o3-mini-2025-01-31 speed / latency No data input / output $1.10/M / $4.40/M |
DeepSeek V4 Flash deepseek-v4-flash speed / latency No data input / output $0.041/M / $0.082/M | O3 Mini o3-mini-medium speed / latency No data input / output $0.045/M / $0.181/M |
DeepSeek V4 Flash DeepSeek-V4-Flash speed / latency No data input / output $0.050/M / $0.100/M | O3 Mini o3-mini-medium speed / latency No data input / output $0.392/M / $1.57/M |
Rankings are based on community-submitted tests and periodic health probes. Advisory only, not official data.
