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  3. Gemini 3 Pro vs Grok 3

Pairwise benchmark snapshot · Aug 1, 2026

Gemini 3 Pro vs Grok 3 benchmark

In this head-to-head showdown, Gemini 3 Pro delivers higher overall intelligence and human-preferred responses (Elo 1,552 vs 1,405), while Gemini 3 Pro leads in SWE-bench software engineering benchmarks (72.4%), while Gemini 3 Pro is more budget-friendly at $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: Gemini 3 Pro holds the advantage over Grok 3 in overall benchmark performance and human evaluation rankings. Choose Gemini 3 Pro 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

Gemini 3 Pro (9)Grok 3 (0)
Gemini 3 Pro
9 of 9 Wins
✓Preference Elo✓LiveBench✓SWE-bench✓GPQA Diamond✓Time to first token✓Output speed✓Input price✓Output price✓Context window
Grok 3
0 of 9 Wins
Competitive baseline across remaining benchmarks
Google
Leads 9 of 9 metrics
Gemini 3 Pro

Google frontier multimodal model with a multi-million-token context window.

Elo 1,552$5/1M out
xAI
Grok 3

Previous xAI generation before Grok 4. Kept for grok 3 vs grok 4.

Elo 1,405$15/1M out

Gemini 3 Pro Thinking Depth & Cost Scaler

Model A

Simulate accuracy gains vs added response time & token cost

Mode: Medium (8k tokens)

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
220 ms
Standard speed
Reasoning Depth
~2,400
Internal tokens
Cost / 1k Calls
$14.13
6.6× standard bill
Accuracy Boost
+4.8% accuracy
STEM & SWE-bench
Top Rival Showdowns for Gemini 3 Pro
All Matchups
Compare vs:vs Claude Opus 4.5vs GPT-5vs Grok 4.6vs DeepSeek V4 Provs Qwen 3 Max
Preference LeaderGemini 3 Pro Wins

Gemini 3 Pro

Δ 147 Arena Elo pts

Throughput LeaderGemini 3 Pro Wins

Gemini 3 Pro

92 tok/s

Value per Dollar LeaderGemini 3 Pro Wins

Gemini 3 Pro

$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 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.

Gemini 3 Pro (10)vsGrok 3 (0)
Gemini 3 Pro: 10W (100%)Overall: Gemini 3 ProGrok 3: 0W (0%)
← Gemini 3 ProGrok 3 →
🏆Gemini 3 Pro(5/5)

Intelligence & Reasoning

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

Benchmark
Gemini 3 ProvsGrok 3
Preference Elo
1,552vs1,405+147
Coding Elo
1,548vs—
SWE-bench
72.4%vs51.4%+21%
LiveBench
70.6%vs60.2%+10.4%
GPQA Diamond
83.6%vs74.2%+9.4%
Gemini 3 Pro: 5WGrok 3: 0W
🏆Gemini 3 Pro(2/2)

Speed & Latency

Generation throughput and time to first token responsiveness

Benchmark
Gemini 3 ProvsGrok 3
Output speed
92 tok/svs88 tok/s+4 tok/s
Time to first token
220 msvs250 ms+30 ms
Gemini 3 Pro: 2WGrok 3: 0W
🏆Gemini 3 Pro(3/3)

Pricing & Capacity

Cost per million tokens and max context window length

Benchmark
Gemini 3 ProvsGrok 3
Output price
$5/1Mvs$15/1M+$10/1M
Input price
$1.25/1Mvs$3/1M+$1.75/1M
Context window
2Mvs131k+1.9M
Gemini 3 Pro: 3WGrok 3: 0W

Side-by-Side Benchmark Matrix

Preference Elo+147
Gemini 3 Pro1,552
seed-bootstrap · Aug 1, 2026
Grok 31,405
seed-bootstrap · Aug 1, 2026
Coding Elo
Gemini 3 Pro1,548
seed-bootstrap · Aug 1, 2026
Grok 3—
LiveBench+10.4%
Gemini 3 Pro70.6%
seed-bootstrap · Aug 1, 2026
Grok 360.2%
seed-bootstrap · Aug 1, 2026
SWE-bench+21%
Gemini 3 Pro72.4%
seed-bootstrap · Aug 1, 2026
Grok 351.4%
seed-bootstrap · Aug 1, 2026
GPQA Diamond+9.4%
Gemini 3 Pro83.6%
seed-bootstrap · Aug 1, 2026
Grok 374.2%
seed-bootstrap · Aug 1, 2026
Time to first token+30 ms
Gemini 3 Pro220 ms
seed-bootstrap · Aug 1, 2026
Grok 3250 ms
seed-bootstrap · Aug 1, 2026
Output speed+4 tok/s
Gemini 3 Pro92 tok/s
seed-bootstrap · Aug 1, 2026
Grok 388 tok/s
seed-bootstrap · Aug 1, 2026
Input price+$1.75/1M
Gemini 3 Pro$1.25/1M
seed-bootstrap · Aug 1, 2026
Grok 3$3/1M
seed-bootstrap · Aug 1, 2026
Output price+$10/1M
Gemini 3 Pro$5/1M
seed-bootstrap · Aug 1, 2026
Grok 3$15/1M
seed-bootstrap · Aug 1, 2026
Context window+1.9M
Gemini 3 Pro2M
seed-bootstrap · Aug 1, 2026
Grok 3131k
seed-bootstrap · Aug 1, 2026
BenchmarkGemini 3 ProGrok 3Advantage Delta
Preference Elo
1,552
seed-bootstrap · Aug 1, 2026
1,405
seed-bootstrap · Aug 1, 2026
+147
Coding Elo
1,548
seed-bootstrap · Aug 1, 2026
——
LiveBench
70.6%
seed-bootstrap · Aug 1, 2026
60.2%
seed-bootstrap · Aug 1, 2026
+10.4%
SWE-bench
72.4%
seed-bootstrap · Aug 1, 2026
51.4%
seed-bootstrap · Aug 1, 2026
+21%
GPQA Diamond
83.6%
seed-bootstrap · Aug 1, 2026
74.2%
seed-bootstrap · Aug 1, 2026
+9.4%
Time to first token
220 ms
seed-bootstrap · Aug 1, 2026
250 ms
seed-bootstrap · Aug 1, 2026
+30 ms
Output speed
92 tok/s
seed-bootstrap · Aug 1, 2026
88 tok/s
seed-bootstrap · Aug 1, 2026
+4 tok/s
Input price
$1.25/1M
seed-bootstrap · Aug 1, 2026
$3/1M
seed-bootstrap · Aug 1, 2026
+$1.75/1M
Output price
$5/1M
seed-bootstrap · Aug 1, 2026
$15/1M
seed-bootstrap · Aug 1, 2026
+$10/1M
Context window
2M
seed-bootstrap · Aug 1, 2026
131k
seed-bootstrap · Aug 1, 2026
+1.9M
Interactive Simulator (USD)

Workload Cost & Savings Calculator

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

Save up to 64% with Gemini 3 Pro
Monthly Volume50M tokens/mo
Quick Presets:
Token Ratio (In vs Out)70% In / 30% Out
RAG / Search (10% out)Coding / Chat (50% out)
Gemini 3 Pro$118.75 / mo
In: $43.75Out: $75
Grok 3$330.00 / mo
In: $105Out: $225
Estimated Cost Delta

Gemini 3 Pro is estimated to save $211.25/month ($2,535/year).

Based on 50M tokens (30% gen)

Key Selection Recommendations

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

Recommended Workload Routing

Repo / coding agentsGemini 3 Pro

Higher SWE-bench (72.4%).

High-volume chatGemini 3 Pro

Lower output list price ($5/1M).

Voice / low-latency UIGemini 3 Pro

Lower TTFT (220 ms).

Long-document RAGGemini 3 Pro

Larger window (2M).

Screenshots / visionGemini 3 Pro

Both accept images. Defaulting to the higher-Elo side (Gemini 3 Pro).

Target WorkloadRecommended PickEvaluation Rationale
Repo / coding agentsGemini 3 ProHigher SWE-bench (72.4%).
High-volume chatGemini 3 ProLower output list price ($5/1M).
Voice / low-latency UIGemini 3 ProLower TTFT (220 ms).
Long-document RAGGemini 3 ProLarger window (2M).
Screenshots / visionGemini 3 ProBoth accept images. Defaulting to the higher-Elo side (Gemini 3 Pro).

Related Editorial Dispatches & Benchmark Notes

View all news
launchMar 15, 2026

Gemini 3 Pro’s multi-million context is still a 2026 RAG shortlist

March 2026 Google frontier multimodal with a 2M window. 3.6 Pro is newer; 3 Pro stays as the original 3.x Pro row.

Community Sentiment

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CompareLLM AI Matrix

Verified Head-to-Head Telemetry

LIVE BENCHMARK
VS
Google

Gemini 3 Pro

Elo 1,552
SWE-bench72.4%
Speed (tok/s)92 tok/s
Input / 1M Tokens$1.25/1M
Output / 1M Tokens$5/1M
xAI

Grok 3

Elo 1,405
SWE-bench51.4%
Speed (tok/s)88 tok/s
Input / 1M Tokens$3/1M
Output / 1M Tokens$15/1M

Frequently Asked Questions

Which is better overall, Gemini 3 Pro or Grok 3?
Gemini 3 Pro has the higher preference Elo in our latest snapshot (1,552). “Better” still depends on coding, price, and latency — see the table.
Which is better at coding, Gemini 3 Pro or Grok 3?
Gemini 3 Pro leads SWE-bench at 72.4% vs 51.4%. SWE-bench is one harness, not your repo.
Which is cheaper to run in production?
Gemini 3 Pro output tokens are $5/1M versus $15/1M. Input prices and retry rates still move the real bill.
Which is faster, Gemini 3 Pro or Grok 3?
Gemini 3 Pro has the lower time-to-first-token (220 ms vs 250 ms). Tokens/sec is a separate column if you care about long completions.
Which has the larger context window?
Gemini 3 Pro accepts 2M tokens versus 131k.
Can I self-host either model?
Neither model is marked open-weights here. You are comparing hosted APIs.
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. Gemini 3 Pro and Grok 3 Elo cells are dated snapshots from the named source — we do not compute Arena ourselves.

Related news

  • launch · Mar 15, 2026

    Gemini 3 Pro’s multi-million context is still a 2026 RAG shortlist

Similar Head-to-Head Comparisons

All Gemini 3 Pro matchups →|All Grok 3 matchups →
Gemini 3 Pro vs Gemini 2.5 Pro (previous gemini-pro)Gemini 3 Pro vs Gemini 3.6 Pro (next gemini-pro)Grok 3 vs Grok 4 (next grok)Gemini 3.7 Flash vs Gemini 3 ProGrok 4.6 vs Gemini 3 ProGemini 3.6 Flash vs Gemini 3 Pro