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  3. DeepSeek R1 vs Google: Gemini 3.1 Flash Lite Preview

Pairwise benchmark snapshot · Aug 17, 2026noindex (thin pair)

DeepSeek R1 vs Google: Gemini 3.1 Flash Lite Preview benchmark

In this head-to-head showdown, Google: Gemini 3.1 Flash Lite Preview is more budget-friendly at $1.5/1M per 1M output tokens. Review the complete breakdown below to determine which model best fits your performance and budget requirements.

Executive Comparison Verdict

Bottom Line: Choose DeepSeek R1 if your priority is peak reasoning, complex code generation, and top preference Elo. Choose Google: Gemini 3.1 Flash Lite Preview if you are optimizing for low latency, high throughput, and cost-efficient API deployment.
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Executive Verdict Summary

Google: Gemini 3.1 Flash Lite Preview holds empirical advantage (3 of 3 metrics)

Coding / SWESWE-bench
DeepSeek R1Top code solve rate
ReasoningGPQA / Live
DeepSeek R1Top logical accuracy
Best Value$/1M Tok
Google: Gemini 3.1 Flash Lite PreviewLowest API billing cost
Speed / TokTok/Sec
DeepSeek R1Fastest stream rate

Verified Advantage Breakdown

3 benchmarks evaluated across capability, speed, and cost

DeepSeek R1 (0)Google: Gemini 3.1 Flash Lite Preview (3)
DeepSeek R1
0 of 3 Wins
Competitive baseline across remaining benchmarks
Google: Gemini 3.1 Flash Lite Preview
3 of 3 Wins
✓Input price✓Output price✓Context window
DeepSeek
DeepSeek R1

Open-weights reasoning model trained with large-scale RL.

Elo 1,358In: $0.7 · Out: $2.5/1M
Google
Leads 3 of 3
Google: Gemini 3.1 Flash Lite Preview

Auto-discovered from OpenRouter (google/gemini-3.1-flash-lite-preview). Preview until a second source matches.

In: $0.25 · Out: $1.5/1M

DeepSeek R1 Thinking Depth & Cost Scaler

Model A

Simulate accuracy gains vs added response time & token cost

Mode: Medium (Full RL CoT)

Reasoning models “think before answering” by generating internal reasoning tokens. Higher effort improves math, coding, and logic accuracy, but increases response delay and token costs.

Delay
420 ms
Standard
CoT Tokens
~2,800
Internal reasoning
Cost / 1k
$8.10
7.4× base bill
Accuracy Boost
+6.5%
STEM & Logic
Top Rival Showdowns for DeepSeek R1
All Matchups
Compare vs:vs Claude Opus 4.5vs GPT-5vs Gemini 3 Provs Grok 4.6vs Qwen 3 Max
Preference Leader

No shared data

Single model data

Throughput Leader

No shared data

No latency data

Value per Dollar LeaderGoogle: Gemini 3.1 Flash Lite Preview Wins

Google: Gemini 3.1 Flash Lite Preview

$1.5 / 1M output

Capability Percentiles

Relative percentile scores computed across all active models in the benchmark catalog.

Multi-Dimensional Capability Radar

Leaders Matchup Capability Radar

Comparing top standard models across 6 key capability dimensions. Tap any spoke or dot to inspect.

Tap any node to inspect
0–100 %ile

Overall Matchup Breakdown

Category wins across reasoning intelligence, generation speed, and token cost.

DeepSeek R1 (6)vsGoogle: Gemini 3.1 Flash Lite Preview (3)
DeepSeek R1: 6W (67%)Overall: DeepSeek R1Google: Gemini 3.1 Flash Lite Preview: 3W (33%)
← DeepSeek R1Google: Gemini 3.1 Flash Lite Preview →
🏆DeepSeek R1 Leads(4/5)

Intelligence & Reasoning

Preference Elo, Coding proficiency, SWE-bench & LiveBench accuracy

Benchmark
DeepSeek R1vsGoogle: Gemini 3.1 Flash Lite Preview
Preference Elo
1,358vs—
Coding Elo
—vs—
SWE-bench
65.2%vs—
LiveBench
59%vs—
GPQA Diamond
79.8%vs—
DeepSeek R1: 4WGoogle: Gemini 3.1 Flash Lite Preview: 0W
🏆DeepSeek R1 Leads(2/2)

Speed & Latency

Generation throughput and time to first token responsiveness

Benchmark
DeepSeek R1vsGoogle: Gemini 3.1 Flash Lite Preview
Output speed
62 tok/svs—
Time to first token
420 msvs—
DeepSeek R1: 2WGoogle: Gemini 3.1 Flash Lite Preview: 0W
🏆Google: Gemini 3.1 Flash Lite Preview Leads(3/3)

Pricing & Capacity

Cost per million tokens and max context window length

Benchmark
DeepSeek R1vsGoogle: Gemini 3.1 Flash Lite Preview
Output price
$2.5/1Mvs$1.5/1M+$1/1M
Input price
$0.7/1Mvs$0.25/1M+$0.45/1M
Context window
64kvs1M+985k
DeepSeek R1: 0WGoogle: Gemini 3.1 Flash Lite Preview: 3W

Side-by-Side Benchmark Matrix

DeepSeek R1Google: Gemini 3.1 Flash Lite Preview
Preference Elo
DeepSeek R11,358
Google: Gemini 3.1 Flash Lite Preview—
LiveBench
DeepSeek R159%
Google: Gemini 3.1 Flash Lite Preview—
SWE-bench
DeepSeek R165.2%
Google: Gemini 3.1 Flash Lite Preview—
GPQA Diamond
DeepSeek R179.8%
Google: Gemini 3.1 Flash Lite Preview—
Time to first token
DeepSeek R1420 ms
Google: Gemini 3.1 Flash Lite Preview—
Output speed
DeepSeek R162 tok/s
Google: Gemini 3.1 Flash Lite Preview—
Input priceGoogle: Gemini 3.1 Flash Lite Preview +$0.45/1M
DeepSeek R1$0.7/1M
Google: Gemini 3.1 Flash Lite Preview$0.25/1M
Output priceGoogle: Gemini 3.1 Flash Lite Preview +$1/1M
DeepSeek R1$2.5/1M
Google: Gemini 3.1 Flash Lite Preview$1.5/1M
Context windowGoogle: Gemini 3.1 Flash Lite Preview +985k
DeepSeek R164k
Google: Gemini 3.1 Flash Lite Preview1M
BenchmarkDeepSeek R1Google: Gemini 3.1 Flash Lite PreviewAdvantage Delta
Preference Elo
1,358
lmarena · Aug 17, 2026
——
LiveBench
59%
livebench · Aug 17, 2026
——
SWE-bench
65.2%
swebench · Aug 17, 2026
——
GPQA Diamond
79.8%
seed-bootstrap · Aug 1, 2026
——
Time to first token
420 ms
seed-bootstrap · Aug 1, 2026
——
Output speed
62 tok/s
seed-bootstrap · Aug 1, 2026
——
Input price
$0.7/1M
openrouter · Aug 17, 2026
$0.25/1M
openrouter · Aug 17, 2026
+$0.45/1M
Output price
$2.5/1M
openrouter · Aug 17, 2026
$1.5/1M
openrouter · Aug 17, 2026
+$1/1M
Context window
64k
openrouter · Aug 17, 2026
1M
openrouter · Aug 17, 2026
+985k

Workload Cost & Savings Calculator

Simulate monthly production API costs in USD (US Dollar).

Save 50% with Google: Gemini 3.1 Flash Lite Preview
Monthly Volume50M tokens/mo
Quick Presets:
Token Ratio (In vs Out)70% In / 30% Out
RAG / Search (10% out)Coding / Chat (50% out)
DeepSeek R1$62.00 / mo
In: $24.5Out: $37.5
Google: Gemini 3.1 Flash Lite Preview$31.25 / mo
In: $8.75Out: $22.5
Estimated Cost Delta

Google: Gemini 3.1 Flash Lite Preview is estimated to save $30.75/month ($369/year).

Based on 50M tokens (30% gen)

Key Selection Recommendations

  • 1
    Google: Gemini 3.1 Flash Lite Preview:Pick Google: Gemini 3.1 Flash Lite Preview when you are optimizing output cost.
  • 2
    Google: Gemini 3.1 Flash Lite Preview:Pick Google: Gemini 3.1 Flash Lite Preview for million-token RAG or long-document jobs.

Recommended Workload Routing

Repo / coding agentsinsufficient data

Need SWE-bench on both sides.

High-volume chatGoogle: Gemini 3.1 Flash Lite Preview

Lower output list price ($1.5/1M).

Voice / low-latency UIinsufficient data

Need TTFT on both sides.

Long-document RAGGoogle: Gemini 3.1 Flash Lite Preview

Larger window (1M).

Screenshots / visionGoogle: Gemini 3.1 Flash Lite Preview

Google: Gemini 3.1 Flash Lite Preview is the side marked multimodal in the catalog.

Target WorkloadRecommended PickEvaluation Rationale
Repo / coding agentsinsufficient dataNeed SWE-bench on both sides.
High-volume chatGoogle: Gemini 3.1 Flash Lite PreviewLower output list price ($1.5/1M).
Voice / low-latency UIinsufficient dataNeed TTFT on both sides.
Long-document RAGGoogle: Gemini 3.1 Flash Lite PreviewLarger window (1M).
Screenshots / visionGoogle: Gemini 3.1 Flash Lite PreviewGoogle: Gemini 3.1 Flash Lite Preview is the side marked multimodal in the catalog.

Related Editorial Dispatches & Benchmark Notes

View all news
launchJan 20, 2025

DeepSeek R1 stays as the open-weights RL baseline

Jan 2025 reasoning model. Still searched. V4 Pro is the newer DeepSeek buy.

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CompareLLM AI Matrix

Verified Head-to-Head Telemetry

LIVE BENCHMARK
VS
DeepSeek

DeepSeek R1

Elo 1,358
SWE-bench65.2%
Speed (tok/s)62 tok/s
Input / 1M Tokens$0.7/1M
Output / 1M Tokens$2.5/1M
Google

Google: Gemini 3.1 Flash Lite Preview

Elo n/a
SWE-bench—
Speed (tok/s)1M
Input / 1M Tokens$0.25/1M
Output / 1M Tokens$1.5/1M

Frequently Asked Questions

Which is better overall, DeepSeek R1 or Google: Gemini 3.1 Flash Lite Preview?
We do not have preference Elo for both models, so we do not declare an overall winner. Compare the metrics that exist.
Which is better at coding, DeepSeek R1 or Google: Gemini 3.1 Flash Lite Preview?
SWE-bench is missing for at least one model, so we do not rank coding from a single number.
Which is cheaper to run in production?
Google: Gemini 3.1 Flash Lite Preview output tokens are $1.5/1M versus $2.5/1M. Input prices and retry rates still move the real bill.
Which is faster, DeepSeek R1 or Google: Gemini 3.1 Flash Lite Preview?
We do not have TTFT for both models.
Which has the larger context window?
Google: Gemini 3.1 Flash Lite Preview accepts 1M tokens versus 64k.
Can I self-host either model?
DeepSeek R1 is marked open-weights in our catalog. The other side is a closed API. Check the provider license before you ship weights.
Are these scores from CompareLLM’s own evals?
No. V1 aggregates public leaderboards (and optional first-party latency pings). Each cell names its source and date. Read /methodology.
What does preference Elo mean on this page?
Preference Elo is a crowd vote from LMArena / Arena. People see two hidden answers and pick the one they like more. The model that wins more often gets a higher Elo. That means people preferred it — not that it passed a school test. It is not SWE-bench, not accuracy, and not a number we invent. DeepSeek R1 and Google: Gemini 3.1 Flash Lite Preview Elo cells are dated snapshots from the named source — we do not compute Arena ourselves.

Related news

  • launch · Jan 20, 2025

    DeepSeek R1 stays as the open-weights RL baseline

Similar Head-to-Head Comparisons

All DeepSeek R1 matchups →|All Google: Gemini 3.1 Flash Lite Preview matchups →
DeepSeek R1 vs DeepSeek V3 (previous deepseek)DeepSeek R1 vs DeepSeek V4 Pro (next deepseek)Gemini 2.0 Flash Thinking vs DeepSeek R1DeepSeek V4 Flash vs DeepSeek R1Gemini 3 Flash vs DeepSeek R1Gemini 3.6 Flash vs DeepSeek R1