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Every score has a dated snapshot.

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  3. Claude 3 Opus vs Gemini 1.5 Pro

Pairwise benchmark snapshot · Aug 1, 2026

Claude 3 Opus vs Gemini 1.5 Pro benchmark

In this head-to-head showdown, Gemini 1.5 Pro delivers higher overall intelligence and human-preferred responses (Elo 1,260 vs 1,248), while Claude 3 Opus leads in SWE-bench software engineering benchmarks (38.4%), while Gemini 1.5 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 1.5 Pro holds the advantage over Claude 3 Opus in overall benchmark performance and human evaluation rankings. Choose Gemini 1.5 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

Claude 3 Opus (1)Gemini 1.5 Pro (8)
Claude 3 Opus
1 of 9 Wins
✓SWE-bench
Gemini 1.5 Pro
8 of 9 Wins
✓Preference Elo✓LiveBench✓GPQA Diamond✓Time to first token✓Output speed✓Input price✓Output price✓Context window
Anthropic
Leads 1 of 9 metrics
Claude 3 Opus

Original Claude 3 flagship. Kept so opus 3 vs later Opus and vs GPT-4o still resolve.

Elo 1,248$75/1M out
Google
Leads 8 of 9 metrics
Gemini 1.5 Pro

First million-token Gemini Pro. Baseline for 1.5 vs 2.5 vs 3.x Pro.

Elo 1,260$5/1M out
Top Rival Showdowns for Claude 3 Opus
All Matchups
Compare vs:vs GPT-5vs Gemini 3 Provs Grok 4.6vs DeepSeek V4 Provs Qwen 3 Max
Preference LeaderGemini 1.5 Pro Wins

Gemini 1.5 Pro

Δ 12 Arena Elo pts

Throughput LeaderGemini 1.5 Pro Wins

Gemini 1.5 Pro

70 tok/s

Value per Dollar LeaderGemini 1.5 Pro Wins

Gemini 1.5 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.

Claude 3 Opus (1)vsGemini 1.5 Pro (8)
Claude 3 Opus: 1W (11%)Overall: Gemini 1.5 ProGemini 1.5 Pro: 8W (89%)
← Claude 3 OpusGemini 1.5 Pro →
🏆Gemini 1.5 Pro(3/5)

Intelligence & Reasoning

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

Benchmark
Claude 3 OpusvsGemini 1.5 Pro
Preference Elo
1,248vs1,260+12
Coding Elo
—vs—
SWE-bench
38.4%vs38%+0.4%
LiveBench
46.2%vs49.2%+3%
GPQA Diamond
50.4%vs58%+7.6%
Claude 3 Opus: 1WGemini 1.5 Pro: 3W
🏆Gemini 1.5 Pro(2/2)

Speed & Latency

Generation throughput and time to first token responsiveness

Benchmark
Claude 3 OpusvsGemini 1.5 Pro
Output speed
48 tok/svs70 tok/s+22 tok/s
Time to first token
420 msvs240 ms+180 ms
Claude 3 Opus: 0WGemini 1.5 Pro: 2W
🏆Gemini 1.5 Pro(3/3)

Pricing & Capacity

Cost per million tokens and max context window length

Benchmark
Claude 3 OpusvsGemini 1.5 Pro
Output price
$75/1Mvs$5/1M+$70/1M
Input price
$15/1Mvs$1.25/1M+$13.75/1M
Context window
200kvs2M+1.8M
Claude 3 Opus: 0WGemini 1.5 Pro: 3W

Side-by-Side Benchmark Matrix

Preference Elo+12
Claude 3 Opus1,248
seed-bootstrap · Aug 1, 2026
Gemini 1.5 Pro1,260
seed-bootstrap · Aug 1, 2026
LiveBench+3%
Claude 3 Opus46.2%
seed-bootstrap · Aug 1, 2026
Gemini 1.5 Pro49.2%
seed-bootstrap · Aug 1, 2026
SWE-bench+0.4%
Claude 3 Opus38.4%
seed-bootstrap · Aug 1, 2026
Gemini 1.5 Pro38%
seed-bootstrap · Aug 1, 2026
GPQA Diamond+7.6%
Claude 3 Opus50.4%
seed-bootstrap · Aug 1, 2026
Gemini 1.5 Pro58%
seed-bootstrap · Aug 1, 2026
Time to first token+180 ms
Claude 3 Opus420 ms
seed-bootstrap · Aug 1, 2026
Gemini 1.5 Pro240 ms
seed-bootstrap · Aug 1, 2026
Output speed+22 tok/s
Claude 3 Opus48 tok/s
seed-bootstrap · Aug 1, 2026
Gemini 1.5 Pro70 tok/s
seed-bootstrap · Aug 1, 2026
Input price+$13.75/1M
Claude 3 Opus$15/1M
seed-bootstrap · Aug 1, 2026
Gemini 1.5 Pro$1.25/1M
seed-bootstrap · Aug 1, 2026
Output price+$70/1M
Claude 3 Opus$75/1M
seed-bootstrap · Aug 1, 2026
Gemini 1.5 Pro$5/1M
seed-bootstrap · Aug 1, 2026
Context window+1.8M
Claude 3 Opus200k
seed-bootstrap · Aug 1, 2026
Gemini 1.5 Pro2M
seed-bootstrap · Aug 1, 2026
BenchmarkClaude 3 OpusGemini 1.5 ProAdvantage Delta
Preference Elo
1,248
seed-bootstrap · Aug 1, 2026
1,260
seed-bootstrap · Aug 1, 2026
+12
LiveBench
46.2%
seed-bootstrap · Aug 1, 2026
49.2%
seed-bootstrap · Aug 1, 2026
+3%
SWE-bench
38.4%
seed-bootstrap · Aug 1, 2026
38%
seed-bootstrap · Aug 1, 2026
+0.4%
GPQA Diamond
50.4%
seed-bootstrap · Aug 1, 2026
58%
seed-bootstrap · Aug 1, 2026
+7.6%
Time to first token
420 ms
seed-bootstrap · Aug 1, 2026
240 ms
seed-bootstrap · Aug 1, 2026
+180 ms
Output speed
48 tok/s
seed-bootstrap · Aug 1, 2026
70 tok/s
seed-bootstrap · Aug 1, 2026
+22 tok/s
Input price
$15/1M
seed-bootstrap · Aug 1, 2026
$1.25/1M
seed-bootstrap · Aug 1, 2026
+$13.75/1M
Output price
$75/1M
seed-bootstrap · Aug 1, 2026
$5/1M
seed-bootstrap · Aug 1, 2026
+$70/1M
Context window
200k
seed-bootstrap · Aug 1, 2026
2M
seed-bootstrap · Aug 1, 2026
+1.8M
Interactive Simulator (USD)

Workload Cost & Savings Calculator

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

Save up to 93% with Gemini 1.5 Pro
Monthly Volume50M tokens/mo
Quick Presets:
Token Ratio (In vs Out)70% In / 30% Out
RAG / Search (10% out)Coding / Chat (50% out)
Claude 3 Opus$1,650.00 / mo
In: $525Out: $1,125
Gemini 1.5 Pro$118.75 / mo
In: $43.75Out: $75
Estimated Cost Delta

Gemini 1.5 Pro is estimated to save $1,531.25/month ($18,375/year).

Based on 50M tokens (30% gen)

Key Selection Recommendations

  • 1
    Claude 3 Opus:Pick Claude 3 Opus when repo-level coding accuracy is the constraint.
  • 2
    Gemini 1.5 Pro:Pick Gemini 1.5 Pro when you are optimizing output cost.
  • 3
    Gemini 1.5 Pro:Pick Gemini 1.5 Pro when time-to-first-token matters more than peak Elo.

Recommended Workload Routing

Repo / coding agentsClaude 3 Opus

Higher SWE-bench (38.4%).

High-volume chatGemini 1.5 Pro

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

Voice / low-latency UIGemini 1.5 Pro

Lower TTFT (240 ms).

Long-document RAGGemini 1.5 Pro

Larger window (2M).

Screenshots / visionGemini 1.5 Pro

Both accept images. Defaulting to the higher-Elo side (Gemini 1.5 Pro).

Target WorkloadRecommended PickEvaluation Rationale
Repo / coding agentsClaude 3 OpusHigher SWE-bench (38.4%).
High-volume chatGemini 1.5 ProLower output list price ($5/1M).
Voice / low-latency UIGemini 1.5 ProLower TTFT (240 ms).
Long-document RAGGemini 1.5 ProLarger window (2M).
Screenshots / visionGemini 1.5 ProBoth accept images. Defaulting to the higher-Elo side (Gemini 1.5 Pro).
Community Sentiment

Cast Your Matchup Vote

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CompareLLM AI Matrix

Verified Head-to-Head Telemetry

LIVE BENCHMARK
VS
Anthropic

Claude 3 Opus

Elo 1,248
SWE-bench38.4%
Speed (tok/s)48 tok/s
Input / 1M Tokens$15/1M
Output / 1M Tokens$75/1M
Google

Gemini 1.5 Pro

Elo 1,260
SWE-bench38%
Speed (tok/s)70 tok/s
Input / 1M Tokens$1.25/1M
Output / 1M Tokens$5/1M

Frequently Asked Questions

Which is better overall, Claude 3 Opus or Gemini 1.5 Pro?
Gemini 1.5 Pro has the higher preference Elo in our latest snapshot (1,260). “Better” still depends on coding, price, and latency — see the table.
Which is better at coding, Claude 3 Opus or Gemini 1.5 Pro?
Claude 3 Opus leads SWE-bench at 38.4% vs 38%. SWE-bench is one harness, not your repo.
Which is cheaper to run in production?
Gemini 1.5 Pro output tokens are $5/1M versus $75/1M. Input prices and retry rates still move the real bill.
Which is faster, Claude 3 Opus or Gemini 1.5 Pro?
Gemini 1.5 Pro has the lower time-to-first-token (240 ms vs 420 ms). Tokens/sec is a separate column if you care about long completions.
Which has the larger context window?
Gemini 1.5 Pro accepts 2M tokens versus 200k.
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. Claude 3 Opus and Gemini 1.5 Pro Elo cells are dated snapshots from the named source — we do not compute Arena ourselves.

Similar Head-to-Head Comparisons

All Claude 3 Opus matchups →|All Gemini 1.5 Pro matchups →
Claude 3 Opus vs Claude Opus 4 (next opus)Gemini 1.5 Pro vs Gemini 2.5 Pro (next gemini-pro)Claude Opus 4.5 vs Gemini 1.5 ProClaude Opus 4.6 vs Gemini 1.5 ProClaude Sonnet 4.5 vs Gemini 1.5 ProGemini 3 Pro vs Gemini 1.5 Pro