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Every score has a dated snapshot.

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  2. Comparisons
  3. DeepSeek R1 vs Gemini 3 Flash

Pairwise benchmark snapshot · Aug 1, 2026

DeepSeek R1 vs Gemini 3 Flash benchmark

In this head-to-head showdown, Gemini 3 Flash delivers higher overall intelligence and human-preferred responses (Elo 1,495 vs 1,358), while Gemini 3 Flash leads in SWE-bench software engineering benchmarks (75.8%), while Gemini 3 Flash is more budget-friendly at $0.6/1M 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: Gemini 3 Flash holds the advantage over DeepSeek R1 in overall benchmark performance and human evaluation rankings. Choose Gemini 3 Flash for demanding workloads, or review the breakdown below to compare coding and pricing metrics.
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Verified Head-to-Head Advantage Breakdown

9 direct benchmark disciplines evaluated across capability, speed, and cost

DeepSeek R1 (1)Gemini 3 Flash (8)
DeepSeek R1
1 of 9 Wins
✓GPQA Diamond
Gemini 3 Flash
8 of 9 Wins
✓Preference Elo✓LiveBench✓SWE-bench✓Time to first token✓Output speed✓Input price✓Output price✓Context window
DeepSeek
Leads 1 of 9 metrics
DeepSeek R1

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

Elo 1,358$2.19/1M out
Google
Leads 8 of 9 metrics
Gemini 3 Flash

Fast Google frontier-adjacent model. Near-top official SWE-bench at a fraction of Opus price.

Flash TurboElo 1,495$0.6/1M out

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.

Thinking Delay
420 ms
Standard speed
Reasoning Depth
~2,800
Internal tokens
Cost / 1k Calls
$7.06
7.6× standard bill
Accuracy Boost
+6.5% accuracy
STEM & SWE-bench
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 LeaderGemini 3 Flash Wins

Gemini 3 Flash

Δ 137 Arena Elo pts

Throughput LeaderGemini 3 Flash Wins

Gemini 3 Flash

190 tok/s

Value per Dollar LeaderGemini 3 Flash Wins

Gemini 3 Flash

$0.6 / 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 Western standard models with China's leading frontier rival across 6 skill dimensions. Tap any spoke or dot to inspect.

Tap any node to inspect
Percentile 0–100
Head-to-Head Comparison

Overall Matchup Breakdown

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

DeepSeek R1 (1)vsGemini 3 Flash (9)
DeepSeek R1: 1W (10%)Overall: Gemini 3 FlashGemini 3 Flash: 9W (90%)
← DeepSeek R1Gemini 3 Flash →
🏆Gemini 3 Flash(4/5)

Intelligence & Reasoning

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

Benchmark
DeepSeek R1vsGemini 3 Flash
Preference Elo
1,358vs1,495+137
Coding Elo
—vs1,510
SWE-bench
65.2%vs75.8%+10.6%
LiveBench
59%vs66.8%+7.8%
GPQA Diamond
79.8%vs78.4%+1.4%
DeepSeek R1: 1WGemini 3 Flash: 4W
🏆Gemini 3 Flash(2/2)

Speed & Latency

Generation throughput and time to first token responsiveness

Benchmark
DeepSeek R1vsGemini 3 Flash
Output speed
62 tok/svs190 tok/s+128 tok/s
Time to first token
420 msvs95 ms+325 ms
DeepSeek R1: 0WGemini 3 Flash: 2W
🏆Gemini 3 Flash(3/3)

Pricing & Capacity

Cost per million tokens and max context window length

Benchmark
DeepSeek R1vsGemini 3 Flash
Output price
$2.19/1Mvs$0.6/1M+$1.59/1M
Input price
$0.55/1Mvs$0.15/1M+$0.4/1M
Context window
128kvs1M+872k
DeepSeek R1: 0WGemini 3 Flash: 3W

Side-by-Side Benchmark Matrix

Preference Elo+137
DeepSeek R11,358
seed-bootstrap · Aug 1, 2026
Gemini 3 Flash1,495
seed-bootstrap · Aug 1, 2026
Coding Elo
DeepSeek R1—
Gemini 3 Flash1,510
seed-bootstrap · Aug 1, 2026
LiveBench+7.8%
DeepSeek R159%
seed-bootstrap · Aug 1, 2026
Gemini 3 Flash66.8%
seed-bootstrap · Aug 1, 2026
SWE-bench+10.6%
DeepSeek R165.2%
seed-bootstrap · Aug 1, 2026
Gemini 3 Flash75.8%
seed-bootstrap · Aug 1, 2026
GPQA Diamond+1.4%
DeepSeek R179.8%
seed-bootstrap · Aug 1, 2026
Gemini 3 Flash78.4%
seed-bootstrap · Aug 1, 2026
Time to first token+325 ms
DeepSeek R1420 ms
seed-bootstrap · Aug 1, 2026
Gemini 3 Flash95 ms
seed-bootstrap · Aug 1, 2026
Output speed+128 tok/s
DeepSeek R162 tok/s
seed-bootstrap · Aug 1, 2026
Gemini 3 Flash190 tok/s
seed-bootstrap · Aug 1, 2026
Input price+$0.4/1M
DeepSeek R1$0.55/1M
seed-bootstrap · Aug 1, 2026
Gemini 3 Flash$0.15/1M
seed-bootstrap · Aug 1, 2026
Output price+$1.59/1M
DeepSeek R1$2.19/1M
seed-bootstrap · Aug 1, 2026
Gemini 3 Flash$0.6/1M
seed-bootstrap · Aug 1, 2026
Context window+872k
DeepSeek R1128k
seed-bootstrap · Aug 1, 2026
Gemini 3 Flash1M
seed-bootstrap · Aug 1, 2026
BenchmarkDeepSeek R1Gemini 3 FlashAdvantage Delta
Preference Elo
1,358
seed-bootstrap · Aug 1, 2026
1,495
seed-bootstrap · Aug 1, 2026
+137
Coding Elo—
1,510
seed-bootstrap · Aug 1, 2026
—
LiveBench
59%
seed-bootstrap · Aug 1, 2026
66.8%
seed-bootstrap · Aug 1, 2026
+7.8%
SWE-bench
65.2%
seed-bootstrap · Aug 1, 2026
75.8%
seed-bootstrap · Aug 1, 2026
+10.6%
GPQA Diamond
79.8%
seed-bootstrap · Aug 1, 2026
78.4%
seed-bootstrap · Aug 1, 2026
+1.4%
Time to first token
420 ms
seed-bootstrap · Aug 1, 2026
95 ms
seed-bootstrap · Aug 1, 2026
+325 ms
Output speed
62 tok/s
seed-bootstrap · Aug 1, 2026
190 tok/s
seed-bootstrap · Aug 1, 2026
+128 tok/s
Input price
$0.55/1M
seed-bootstrap · Aug 1, 2026
$0.15/1M
seed-bootstrap · Aug 1, 2026
+$0.4/1M
Output price
$2.19/1M
seed-bootstrap · Aug 1, 2026
$0.6/1M
seed-bootstrap · Aug 1, 2026
+$1.59/1M
Context window
128k
seed-bootstrap · Aug 1, 2026
1M
seed-bootstrap · Aug 1, 2026
+872k
Interactive Simulator (USD)

Workload Cost & Savings Calculator

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

Save up to 73% with Gemini 3 Flash
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$52.10 / mo
In: $19.25Out: $32.85
Gemini 3 Flash$14.25 / mo
In: $5.25Out: $9
Estimated Cost Delta

Gemini 3 Flash is estimated to save $37.85/month ($454/year).

Based on 50M tokens (30% gen)

Key Selection Recommendations

  • 1
    Gemini 3 Flash:Pick Gemini 3 Flash when repo-level coding accuracy is the constraint.
  • 2
    Gemini 3 Flash:Pick Gemini 3 Flash when time-to-first-token matters more than peak Elo.
  • 3
    Gemini 3 Flash:Pick Gemini 3 Flash for million-token RAG or long-document jobs.

Recommended Workload Routing

Repo / coding agentsGemini 3 Flash

Higher SWE-bench (75.8%).

High-volume chatGemini 3 Flash

Lower output list price ($0.6/1M).

Voice / low-latency UIGemini 3 Flash

Lower TTFT (95 ms).

Long-document RAGGemini 3 Flash

Larger window (1M).

Screenshots / visionGemini 3 Flash

Gemini 3 Flash is the side marked multimodal in the catalog.

Target WorkloadRecommended PickEvaluation Rationale
Repo / coding agentsGemini 3 FlashHigher SWE-bench (75.8%).
High-volume chatGemini 3 FlashLower output list price ($0.6/1M).
Voice / low-latency UIGemini 3 FlashLower TTFT (95 ms).
Long-document RAGGemini 3 FlashLarger window (1M).
Screenshots / visionGemini 3 FlashGemini 3 Flash is the side marked multimodal in the catalog.

Related Editorial Dispatches & Benchmark Notes

View all news
launchMar 16, 2026

Gemini 3 Flash: near-top official SWE-bench at a fraction of Opus

March 2026 speed SKU. Still a useful cheap-coding compare even after 3.6/3.7 Flash.

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.

Community Sentiment

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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$0.55/1M
Output / 1M Tokens$2.19/1M
Google

Gemini 3 Flash

Elo 1,495
SWE-bench75.8%
Speed (tok/s)190 tok/s
Input / 1M Tokens$0.15/1M
Output / 1M Tokens$0.6/1M

Frequently Asked Questions

Which is better overall, DeepSeek R1 or Gemini 3 Flash?
Gemini 3 Flash has the higher preference Elo in our latest snapshot (1,495). “Better” still depends on coding, price, and latency — see the table.
Which is better at coding, DeepSeek R1 or Gemini 3 Flash?
Gemini 3 Flash leads SWE-bench at 75.8% vs 65.2%. SWE-bench is one harness, not your repo.
Which is cheaper to run in production?
Gemini 3 Flash output tokens are $0.6/1M versus $2.19/1M. Input prices and retry rates still move the real bill.
Which is faster, DeepSeek R1 or Gemini 3 Flash?
Gemini 3 Flash has the lower time-to-first-token (95 ms vs 420 ms). Tokens/sec is a separate column if you care about long completions.
Which has the larger context window?
Gemini 3 Flash accepts 1M tokens versus 128k.
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 Gemini 3 Flash Elo cells are dated snapshots from the named source — we do not compute Arena ourselves.

Related news

  • launch · Mar 16, 2026

    Gemini 3 Flash: near-top official SWE-bench at a fraction of Opus

  • launch · Jan 20, 2025

    DeepSeek R1 stays as the open-weights RL baseline

Similar Head-to-Head Comparisons

All DeepSeek R1 matchups →|All Gemini 3 Flash matchups →
DeepSeek R1 vs DeepSeek V3 (previous deepseek)DeepSeek R1 vs DeepSeek V4 Pro (next deepseek)Gemini 3 Flash vs Gemini 2.5 Flash (previous gemini-flash)Gemini 3 Flash vs Gemini 3.6 Flash (next gemini-flash)Gemini 2.0 Flash Thinking vs Gemini 3 FlashDeepSeek V4 Flash vs Gemini 3 Flash