DeepSeek R1 vs Gemini 3.1 Flash-Lite
Complete pricing and performance comparison between DeepSeek's DeepSeek R1 and Google's Gemini 3.1 Flash-Lite.
Quick Verdict
Cheaper
Gemini 3.1 Flash-Lite
5.4x cheaper input, 3.6x cheaper output
Larger Context
Gemini 3.1 Flash-Lite
1.0M vs 128K
Higher Quality
Gemini 3.1 Flash-Lite
Score: 34 vs 27
Pricing Comparison
| Spec | DeepSeek R1 | Gemini 3.1 Flash-Lite | Difference |
|---|---|---|---|
| Provider | DeepSeek | ||
| Input / 1M tokens | $1.35 | $0.25 | Gemini 3.1 Flash-Lite is 81% more expensive |
| Output / 1M tokens | $5.4 | $1.5 | Gemini 3.1 Flash-Lite is 72% more expensive |
| Context Window | 128K | 1.0M | 8x difference |
| Max Output | 33K | 66K |
Performance Benchmarks
| Metric | DeepSeek R1 | Gemini 3.1 Flash-Lite | Winner |
|---|---|---|---|
| Quality Index | 27 | 34 | Gemini 3.1 Flash-Lite |
| Output Speed | -- | 230 tok/s | N/A |
| Time to First Token | 0.00s | 5.17s | DeepSeek R1 |
| Value (Quality/$) | 20.1 | 134.0 | Higher = better value |
Benchmark data from Artificial Analysis. Quality Index is a composite score across reasoning, coding, and knowledge tasks.
Cost at Scale
Estimated cost at different usage levels (3:1 input-to-output token ratio, typical for chat).
| Usage | DeepSeek R1 | Gemini 3.1 Flash-Lite | Savings |
|---|---|---|---|
Single request 1K in / 300 out | $0.0030 | $0.0007 | Gemini 3.1 Flash-Lite saves $0.0023 |
10 requests 10K in / 3K out | $0.030 | $0.0070 | Gemini 3.1 Flash-Lite saves $0.023 |
100 requests 100K in / 30K out | $0.297 | $0.070 | Gemini 3.1 Flash-Lite saves $0.227 |
1,000 requests 1M in / 300K out | $2.97 | $0.700 | Gemini 3.1 Flash-Lite saves $2.27 |
10,000 requests 10M in / 3M out | $29.70 | $7.00 | Gemini 3.1 Flash-Lite saves $22.70 |
1M requests/mo 1B in / 300M out | $2970.00 | $700.00 | Gemini 3.1 Flash-Lite saves $2270.00 |
Pros & Cons
DeepSeek R1 Strengths
Part of the DeepSeek ecosystem
Gemini 3.1 Flash-Lite Strengths
- +Cheaper input tokens
- +Cheaper output tokens
- +Larger context window (1.0M vs 128K)
- +Higher max output tokens
- +Higher quality score (34 vs 27)
When to Use Each Model
Choose DeepSeek R1 for
- →Projects already integrated with DeepSeek's ecosystem
Choose Gemini 3.1 Flash-Lite for
- →Budget-conscious projects where cost is the primary factor
- →Long documents, large codebases, or multi-turn conversations
- →Generating long-form content or detailed code
- →Tasks requiring maximum accuracy and reasoning
Frequently Asked Questions
Which is cheaper, DeepSeek R1 or Gemini 3.1 Flash-Lite?
For input tokens, Gemini 3.1 Flash-Lite is 5.4x cheaper at $0.25/1M tokens. For output tokens, Gemini 3.1 Flash-Lite is 3.6x cheaper at $1.5/1M tokens. At typical usage (1M input + 300K output), DeepSeek R1 costs $2.97 vs Gemini 3.1 Flash-Lite at $0.700.
What's the context window difference?
DeepSeek R1 supports 128K context (128,000 tokens), while Gemini 3.1 Flash-Lite supports 1.0M (1,048,576 tokens). Gemini 3.1 Flash-Lite can handle 8x more context in a single request.
Which model has better benchmarks?
Quality Index: DeepSeek R1 scores 27 vs Gemini 3.1 Flash-Lite at 34.
When should I choose DeepSeek R1 over Gemini 3.1 Flash-Lite?
Choose DeepSeek R1 when you need: a DeepSeek ecosystem model. Choose Gemini 3.1 Flash-Lite when you need: Cheaper input tokens, Cheaper output tokens, Larger context window (1.0M vs 128K), Higher max output tokens, Higher quality score (34 vs 27).
How much would 10,000 API requests cost?
At 1K input + 300 output tokens per request (typical chat): DeepSeek R1 = $29.70, Gemini 3.1 Flash-Lite = $7.00. At 10K input + 1K output per request (longer conversations): DeepSeek R1 = $189.00, Gemini 3.1 Flash-Lite = $40.00.
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