Data points: 54
The readout for DeepSeek V4 Flash and Intern-S1, before the detailed comparison sheet.
Decision read
DeepSeek V4 Flash
DeepSeek V4 Flash currently has the stronger profile, with verified wins split 4 to 0.
Evidence depth
54 data points
Includes 0 benchmark rows, 0 audit samples, and 6 provider examples.
Selection signal
Start with DeepSeek V4 Flash
The charts below split 6 high-signal samples across speed, scores, and audit health.
Model compare DeepSeek V4 Flash vs Intern-S1deepseek-v4-flash-vs-intern-s1 | Model A DeepSeek V4 Flash | Model B Intern-S1 |
|---|---|---|
| Overall leader | Leading | Contender |
| Verified metric wins | 4 wins | 0 wins |
| Where it leads | Cheapest input price, Free providers, Provider coverage, Recent tests | No data |
Third-party benchmark profile synced into LMSpeed; only metrics available for both models are shown.
| Metric | DeepSeek V4 Flash | Intern-S1 |
|---|---|---|
| No shared benchmark metrics are available yet. | ||
Latest completed audits from shared providers, with four safety and integrity score groups plus report links.
| Provider | DeepSeek V4 Flash | Intern-S1 |
|---|---|---|
| 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 | Intern-S1 |
|---|---|---|
10 tests | DeepSeek V4 Flash speed / latency 143 tok/s / 1761ms input / output No data | Intern-S1 |
This report only uses LMSpeed data for DeepSeek V4 Flash and Intern-S1: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Guidance | DeepSeek V4 Flash | Intern-S1 |
|---|---|---|
| When to choose each model | DeepSeek V4 Flash DeepSeek V4 Flash is stronger when you prioritize Cheapest input price, Free providers, Provider coverage, Recent tests. | Intern-S1 Intern-S1 does not clearly lead on the verified metrics here, so check provider-specific pricing before choosing. |
TL;DR: DeepSeek V4 Flash leads across 54 verifiable data points, including pricing, speed, latency, benchmarks, and provider examples.
Continue from DeepSeek V4 Flash vs Intern-S1 into nearby model comparisons with enough verified LMSpeed data.
| Model metadata | DeepSeek V4 Flash exposes 1.0M tokens; notable signals: Text input, Text output, Tool calling, Structured outputs. | No OpenRouter metadata is available yet for this model. |
|---|---|---|
| Developer | DeepSeek | No data |
| Context window | 1.0M tokens | No data |
| Max output | 131.1K tokens | No data |
| Released | Apr 2026 | No data |
| Modalities | Input Text Output Text | No data |
| Features | Text inputText outputTool callingStructured outputsJSON modeReasoning | None listed |
| Parameters | No data | No data |
| Tokenizer | DeepSeek | No data |
| Knowledge cutoff | No data | No data |
| OpenRouter ID | deepseek/deepseek-v4-flash | No data |
| References | No data | No data |
speed / latency
N/A / N/A
input / output
No data
Koyeb AI Gateway0 tests | DeepSeek V4 Flash speed / latency N/A / N/A input / output No data | Intern-S1 speed / latency N/A / N/A input / output No data |
|---|
ModelScope0 tests | DeepSeek V4 Flash speed / latency N/A / N/A input / output No data | Intern-S1 speed / latency N/A / N/A input / output No data |
|---|
Rnglg2 API0 tests | DeepSeek V4 Flash deepseek/deepseek-v4-flash speed / latency N/A / N/A input / output $14.60/M / $29.20/M | Intern-S1 intern-s1 speed / latency N/A / N/A input / output $0/M / $0/M |
|---|
SWT-API0 tests | DeepSeek V4 Flash speed / latency N/A / N/A input / output No data | Intern-S1 speed / latency N/A / N/A input / output No data |
|---|
DeepSeek V4 Flash deepseek-v4-flash-nx speed / latency No data input / output $0.010/M / $0.010/M | Intern-S1 intern-s1 speed / latency No data input / output $0.010/M / $0.010/M |
Rankings are based on community-submitted tests and periodic health probes. Advisory only, not official data.
