CompareLLM.ai
Live
Leaderboard
Models
Compare
Best of & Stacks
Research & News
…
CompareLLM.ai
Precision Benchmarks

Programmatic, dated AI model benchmarks, head-to-head comparisons, and Stack Engine presets.

Daily ingest · 06:00 UTC

Analytics & Benchmarks

  • AI Model Leaderboard
  • Head-to-Head Compare Hub
  • Models Directory
  • Stack Engine Presets
  • Frontier Models
  • Open Weights Catalog

Guides & Intent Lists

  • Best LLM Lists (2026)
  • Best Coding LLM
  • Best Cheap LLM
  • Fastest Low-Latency LLM
  • Claude vs GPT Benchmark
  • What is Elo?
  • Methodology Guides
  • News & Dispatches

Transparency & API

  • Evaluation Methodology
  • Benchmark Changelog
  • Public JSON API
  • llms.txt Specification
  • Privacy Policy
  • Sign In / Account

© 2026 CompareLLM. Public benchmark data aggregated from Arena Elo, LiveBench, SWE-bench & OpenRouter.

Every score has a dated snapshot.

Theme:
Currency:
  1. Home
  2. Comparisons
  3. Claude Sonnet 4 vs Gemini 3 Flash

Pairwise benchmark snapshot · Aug 1, 2026

Claude Sonnet 4 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 1,455), 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 Claude Sonnet 4 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.
Share Analysis:
WhatsAppTelegramXLinkedInReddit

Verified Head-to-Head Advantage Breakdown

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

Claude Sonnet 4 (0)Gemini 3 Flash (10)
Claude Sonnet 4
0 of 10 Wins
Competitive baseline across remaining benchmarks
Gemini 3 Flash
10 of 10 Wins
✓Preference Elo✓Coding Elo✓LiveBench✓SWE-bench✓GPQA Diamond✓Time to first token✓Output speed✓Input price✓Output price✓Context window
Anthropic
Claude Sonnet 4

First Sonnet 4 generation. Bridge between 3.5/3.7 and Sonnet 5.

Elo 1,455$15/1M out
Google
Leads 10 of 10 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
Top Rival Showdowns for Claude Sonnet 4
All Matchups
Compare vs:vs GPT-5vs Gemini 3 Provs Grok 4.6vs DeepSeek V4 Provs Qwen 3 Max
Preference LeaderGemini 3 Flash Wins

Gemini 3 Flash

Δ 40 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.

Claude Sonnet 4 (0)vsGemini 3 Flash (10)
Claude Sonnet 4: 0W (0%)Overall: Gemini 3 FlashGemini 3 Flash: 10W (100%)
← Claude Sonnet 4Gemini 3 Flash →
🏆Gemini 3 Flash(5/5)

Intelligence & Reasoning

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

Benchmark
Claude Sonnet 4vsGemini 3 Flash
Preference Elo
1,455vs1,495+40
Coding Elo
1,468vs1,510+42
SWE-bench
62.8%vs75.8%+13%
LiveBench
63.2%vs66.8%+3.6%
GPQA Diamond
76.4%vs78.4%+2%
Claude Sonnet 4: 0WGemini 3 Flash: 5W
🏆Gemini 3 Flash(2/2)

Speed & Latency

Generation throughput and time to first token responsiveness

Benchmark
Claude Sonnet 4vsGemini 3 Flash
Output speed
92 tok/svs190 tok/s+98 tok/s
Time to first token
220 msvs95 ms+125 ms
Claude Sonnet 4: 0WGemini 3 Flash: 2W
🏆Gemini 3 Flash(3/3)

Pricing & Capacity

Cost per million tokens and max context window length

Benchmark
Claude Sonnet 4vsGemini 3 Flash
Output price
$15/1Mvs$0.6/1M+$14.4/1M
Input price
$3/1Mvs$0.15/1M+$2.85/1M
Context window
200kvs1M+800k
Claude Sonnet 4: 0WGemini 3 Flash: 3W

Side-by-Side Benchmark Matrix

Preference Elo+40
Claude Sonnet 41,455
seed-bootstrap · Aug 1, 2026
Gemini 3 Flash1,495
seed-bootstrap · Aug 1, 2026
Coding Elo+42
Claude Sonnet 41,468
seed-bootstrap · Aug 1, 2026
Gemini 3 Flash1,510
seed-bootstrap · Aug 1, 2026
LiveBench+3.6%
Claude Sonnet 463.2%
seed-bootstrap · Aug 1, 2026
Gemini 3 Flash66.8%
seed-bootstrap · Aug 1, 2026
SWE-bench+13%
Claude Sonnet 462.8%
seed-bootstrap · Aug 1, 2026
Gemini 3 Flash75.8%
seed-bootstrap · Aug 1, 2026
GPQA Diamond+2%
Claude Sonnet 476.4%
seed-bootstrap · Aug 1, 2026
Gemini 3 Flash78.4%
seed-bootstrap · Aug 1, 2026
Time to first token+125 ms
Claude Sonnet 4220 ms
seed-bootstrap · Aug 1, 2026
Gemini 3 Flash95 ms
seed-bootstrap · Aug 1, 2026
Output speed+98 tok/s
Claude Sonnet 492 tok/s
seed-bootstrap · Aug 1, 2026
Gemini 3 Flash190 tok/s
seed-bootstrap · Aug 1, 2026
Input price+$2.85/1M
Claude Sonnet 4$3/1M
seed-bootstrap · Aug 1, 2026
Gemini 3 Flash$0.15/1M
seed-bootstrap · Aug 1, 2026
Output price+$14.4/1M
Claude Sonnet 4$15/1M
seed-bootstrap · Aug 1, 2026
Gemini 3 Flash$0.6/1M
seed-bootstrap · Aug 1, 2026
Context window+800k
Claude Sonnet 4200k
seed-bootstrap · Aug 1, 2026
Gemini 3 Flash1M
seed-bootstrap · Aug 1, 2026
BenchmarkClaude Sonnet 4Gemini 3 FlashAdvantage Delta
Preference Elo
1,455
seed-bootstrap · Aug 1, 2026
1,495
seed-bootstrap · Aug 1, 2026
+40
Coding Elo
1,468
seed-bootstrap · Aug 1, 2026
1,510
seed-bootstrap · Aug 1, 2026
+42
LiveBench
63.2%
seed-bootstrap · Aug 1, 2026
66.8%
seed-bootstrap · Aug 1, 2026
+3.6%
SWE-bench
62.8%
seed-bootstrap · Aug 1, 2026
75.8%
seed-bootstrap · Aug 1, 2026
+13%
GPQA Diamond
76.4%
seed-bootstrap · Aug 1, 2026
78.4%
seed-bootstrap · Aug 1, 2026
+2%
Time to first token
220 ms
seed-bootstrap · Aug 1, 2026
95 ms
seed-bootstrap · Aug 1, 2026
+125 ms
Output speed
92 tok/s
seed-bootstrap · Aug 1, 2026
190 tok/s
seed-bootstrap · Aug 1, 2026
+98 tok/s
Input price
$3/1M
seed-bootstrap · Aug 1, 2026
$0.15/1M
seed-bootstrap · Aug 1, 2026
+$2.85/1M
Output price
$15/1M
seed-bootstrap · Aug 1, 2026
$0.6/1M
seed-bootstrap · Aug 1, 2026
+$14.4/1M
Context window
200k
seed-bootstrap · Aug 1, 2026
1M
seed-bootstrap · Aug 1, 2026
+800k
Interactive Simulator (USD)

Workload Cost & Savings Calculator

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

Save up to 96% 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)
Claude Sonnet 4$330.00 / mo
In: $105Out: $225
Gemini 3 Flash$14.25 / mo
In: $5.25Out: $9
Estimated Cost Delta

Gemini 3 Flash is estimated to save $315.75/month ($3,789/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

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

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 FlashBoth accept images. Defaulting to the higher-Elo side (Gemini 3 Flash).

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.

Community Sentiment

Cast Your Matchup Vote

0 total votes

Community Discussions (0)

Sign in to cast your verified vote, bookmark models, and participate in benchmark discussions.Sign In to Post

No comments posted on this matchup yet. Be the first to share an evaluation note!

Social Share Card Preview

Dynamic OpenGraph banner generated at /compare/claude-sonnet-4-vs-gemini-3-flash/opengraph-image

Save PNG

CompareLLM AI Matrix

Verified Head-to-Head Telemetry

LIVE BENCHMARK
VS
Anthropic

Claude Sonnet 4

Elo 1,455
SWE-bench62.8%
Speed (tok/s)92 tok/s
Input / 1M Tokens$3/1M
Output / 1M Tokens$15/1M
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, Claude Sonnet 4 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, Claude Sonnet 4 or Gemini 3 Flash?
Gemini 3 Flash leads SWE-bench at 75.8% vs 62.8%. 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 $15/1M. Input prices and retry rates still move the real bill.
Which is faster, Claude Sonnet 4 or Gemini 3 Flash?
Gemini 3 Flash has the lower time-to-first-token (95 ms vs 220 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 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 Sonnet 4 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

Similar Head-to-Head Comparisons

All Claude Sonnet 4 matchups →|All Gemini 3 Flash matchups →
Claude Sonnet 4 vs Claude 3.7 Sonnet (previous sonnet)Claude Sonnet 4 vs Claude Sonnet 4.5 (next sonnet)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 FlashClaude Sonnet 4.5 vs Gemini 3 Flash