DeepSeek-V4-Flash vs Gemini 3.1 Pro
Pricing & Specs
DeepSeek vs Google (Gemini), side by side from a live registry. Specs below, then benchmark both on your own task.
TL;DR: On a typical task (1K input + 500 output tokens), DeepSeek-V4-Flash is about 7.3x cheaper than Gemini 3.1 Pro. But per-token price is not cost per result: a cheaper model that needs more tokens, retries, or hand-holding can end up more expensive on your workload. The specs below are facts; which one is better at YOUR task is measurable, not guessable.
API Pricing: DeepSeek-V4-Flash vs Gemini 3.1 Pro
| Tokens | DeepSeek-V4-Flash | Gemini 3.1 Pro |
|---|---|---|
| Input | $0.44 / 1M | $2 / 1M |
| Output | $1.32 / 1M | $12 / 1M |
| Cached input | $0.014 / 1M | $0.2 / 1M |
What that means in practice (1K input + 500 output tokens)
Specs Compared
| Spec | DeepSeek-V4-Flash | Gemini 3.1 Pro |
|---|---|---|
| Context window | 1M tokens | 1.04858M tokens |
| Max output tokens | 384K tokens | 65.536K tokens |
| Input modalities | text | text, image, video, audio, PDF |
| Knowledge cutoff | - | - |
| Latency (measured) | - | - |
| Reasoning model | Yes | Yes |
| Tool / function calling | Yes | Yes |
| JSON mode | Yes | Yes |
| Prompt caching | Yes | Yes |
When to Choose Which
FAQ
Which is cheaper, DeepSeek-V4-Flash or Gemini 3.1 Pro?
DeepSeek-V4-Flash costs $0.44/$1.32 per 1M input/output tokens; Gemini 3.1 Pro costs $2/$12. On a typical task (1K input + 500 output tokens), DeepSeek-V4-Flash is about 7.3x cheaper than Gemini 3.1 Pro.
Which has the bigger context window, DeepSeek-V4-Flash or Gemini 3.1 Pro?
DeepSeek-V4-Flash has a 1M-token context window; Gemini 3.1 Pro has 1.04858M tokens.
Is DeepSeek-V4-Flash better than Gemini 3.1 Pro?
It depends on the task. Generic leaderboards won't tell you which one wins on YOUR workload. OpenMark lets you benchmark DeepSeek-V4-Flash and Gemini 3.1 Pro head to head on your own task with real API calls, no API keys needed, free tier available.
DeepSeek-V4-Flash or Gemini 3.1 Pro for YOUR Task?
Spec tables can't answer that. Run both head to head on your actual workload:
real API calls, ranked results with accuracy, cost, and latency. Free tier available.