Pairwise benchmark snapshot · Aug 16, 2026

Claude Sonnet 4 vs Gemini 3 Pro benchmark

Name: Claude Sonnet 4 vs Gemini 3 Pro AI benchmark comparison
Creator: CompareLLM
License: https://creativecommons.org/licenses/by/4.0/

This page compares Claude Sonnet 4 (Anthropic) and Gemini 3 Pro (Google) using the latest snapshots we have as of Aug 16, 2026. On preference Elo, Gemini 3 Pro is ahead by 97 points (1,552 vs 1,455; seed-bootstrap (Aug 1, 2026)). On SWE-bench coding, Gemini 3 Pro resolves 72.4% versus 62.8% (seed-bootstrap (Aug 1, 2026)). Claude Sonnet 4 streams faster (92 tok/s) while Gemini 3 Pro is the cheaper output token ($5/1M). Gemini 3 Pro has the larger context window (2M tokens). Every cell below is a dated snapshot from a named public source — we do not invent missing scores, and we do not run SWE-bench ourselves.

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Anthropic

Claude Sonnet 4

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

Elo 1,455$15/1M out

Google

Gemini 3 Pro

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

Elo 1,552$5/1M out

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Model A

Model B

Quick vs:vs Claude Opus 4.5 vs Claude Opus 4.6 vs Claude Sonnet 4.5 vs Claude 3.7 Sonnet

Interactive Comparison Diagram

Matchup Breakdown

Tug-of-War Matchup Matrix

Category wins across intelligence, speed, and pricing efficiency.

Claude Sonnet 4 (0)vsGemini 3 Pro (8)

Claude Sonnet 4: 0W (0%)Overall: Gemini 3 ProGemini 3 Pro: 8W (100%)

← Claude Sonnet 42 tiesGemini 3 Pro →

Gemini 3 Pro (5/5)

Intelligence & Reasoning

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

Preference Elo

1,455vs1,552

Coding Elo

1,468vs1,548

SWE-bench

62.8%vs72.4%

LiveBench

63.2%vs70.6%

GPQA Diamond

76.4%vs83.6%

Claude Sonnet 4: 0WGemini 3 Pro: 5W

Tied (0/2)

Speed & Latency

Generation throughput and time to first token responsiveness

Output speed

92 tok/svs92 tok/s

Time to first token

220 msvs220 ms

Claude Sonnet 4: 0WGemini 3 Pro: 0W

Gemini 3 Pro (3/3)

Pricing & Capacity

Cost per million tokens and max context window length

Output price

$15/1Mvs$5/1M

Input price

$3/1Mvs$1.25/1M

Context window

1Mvs2M

Claude Sonnet 4: 0WGemini 3 Pro: 3W

Capability Matchup Radar

Multi-Dimensional Capability Radar

Each spoke is a skill. Farther from the center is better (0–100th percentile). Tap any dot to inspect details.

Tap any node to inspect

Percentile 0–100

Dimensional AdvantageGemini 3 Pro 5/6

Preference Elo

Gemini 3 Pro

97 pts advantage

Throughput Speed

Claude Sonnet 4

Equal tok/s

Price Efficiency

Gemini 3 Pro

$10.00/1M cheaper

Full Benchmark Score Matrix

—

Elo

High is better

1,455

EloHigh is better

1,552+7%

Code Elo

High is better

1,468

Code EloHigh is better

1,548+5%

LiveBench

High is better

63.2%

LiveBenchHigh is better

70.6%+12%

SWE-bench

High is better

62.8%

SWE-benchHigh is better

72.4%+15%

GPQA

High is better

76.4%

GPQAHigh is better

83.6%+9%

TTFT

Low is better

220 ms

TTFTLow is better

220 ms

Speed

High is better

92 tok/s

SpeedHigh is better

92 tok/s

In $

Low is better

$3/1M

In $Low is better

$1.25/1M+140%

Out $

Low is better

$15/1M

Out $Low is better

$5/1M+200%

Context

High is better

ContextHigh is better

2M+100%

Interactive Simulator

Workload Cost & Savings Calculator

Simulate monthly production API costs based on published $/1M tokens.

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)

Claude Sonnet 4$330.00 / mo

In: $105.00Out: $225.00

Gemini 3 Pro$118.75 / mo

In: $43.75Out: $75.00

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
Claude Sonnet 4:Pick Claude Sonnet 4 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 UIClaude Sonnet 4

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 Workload	Recommended Pick	Evaluation Rationale
Repo / coding agents	Gemini 3 Pro	Higher SWE-bench (72.4%).
High-volume chat	Gemini 3 Pro	Lower output list price ($5/1M).
Voice / low-latency UI	Claude Sonnet 4	Lower TTFT (220 ms).
Long-document RAG	Gemini 3 Pro	Larger window (2M).
Screenshots / vision	Gemini 3 Pro	Both 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.

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LIVE

Anthropic

Claude Sonnet 4

Elo 1,455

LiveBench63.2%

SWE-bench62.8%

Speed92 tok/s

Output cost$15/1M

Google

Gemini 3 Pro

Elo 1,552

LiveBench70.6%

SWE-bench72.4%

Speed92 tok/s

Output cost$5/1M

Frequently Asked Questions

Which is better overall, Claude Sonnet 4 or Gemini 3 Pro?: 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, Claude Sonnet 4 or Gemini 3 Pro?: Gemini 3 Pro leads SWE-bench at 72.4% vs 62.8%. 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, Claude Sonnet 4 or Gemini 3 Pro?: Claude Sonnet 4 has the lower time-to-first-token (220 ms vs 220 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 1M.
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 Pro Elo cells are dated snapshots from the named source — we do not compute Arena ourselves.

Similar Head-to-Head Comparisons

All Claude Sonnet 4 matchups →|All Gemini 3 Pro matchups →

Claude Sonnet 4 vs Claude 3.7 Sonnet (previous sonnet)Claude Sonnet 4 vs Claude Sonnet 4.5 (next sonnet)Gemini 3 Pro vs Gemini 2.5 Pro (previous gemini-pro)Gemini 3 Pro vs Gemini 3.6 Pro (next gemini-pro)Gemini 2.0 Flash Thinking vs Claude Sonnet 4 Gemini 3 Flash vs Claude Sonnet 4

Claude Sonnet 4 vs Gemini 3 Pro benchmark

Interactive Comparison Diagram

Matchup Breakdown

Tug-of-War Matchup Matrix

Category wins across intelligence, speed, and pricing efficiency.

Claude Sonnet 4 (0)vsGemini 3 Pro (8)

Claude Sonnet 4: 0W (0%)Overall: Gemini 3 ProGemini 3 Pro: 8W (100%)

← Claude Sonnet 42 tiesGemini 3 Pro →

Gemini 3 Pro (5/5)

Intelligence & Reasoning

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

Preference Elo

1,455vs1,552

Coding Elo

1,468vs1,548

SWE-bench

62.8%vs72.4%

LiveBench

63.2%vs70.6%

GPQA Diamond

76.4%vs83.6%

Claude Sonnet 4: 0WGemini 3 Pro: 5W

Tied (0/2)

Speed & Latency

Generation throughput and time to first token responsiveness

Output speed

92 tok/svs92 tok/s

Time to first token

220 msvs220 ms

Claude Sonnet 4: 0WGemini 3 Pro: 0W

Gemini 3 Pro (3/3)

Pricing & Capacity

Cost per million tokens and max context window length

Output price

$15/1Mvs$5/1M

Input price

$3/1Mvs$1.25/1M

Context window

1Mvs2M

Claude Sonnet 4: 0WGemini 3 Pro: 3W

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 UIClaude Sonnet 4

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 Workload	Recommended Pick	Evaluation Rationale
Repo / coding agents	Gemini 3 Pro	Higher SWE-bench (72.4%).
High-volume chat	Gemini 3 Pro	Lower output list price ($5/1M).
Voice / low-latency UI	Claude Sonnet 4	Lower TTFT (220 ms).
Long-document RAG	Gemini 3 Pro	Larger window (2M).
Screenshots / vision	Gemini 3 Pro	Both accept images. Defaulting to the higher-Elo side (Gemini 3 Pro).

Frequently Asked Questions

Which is better overall, Claude Sonnet 4 or Gemini 3 Pro?

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, Claude Sonnet 4 or Gemini 3 Pro?

Gemini 3 Pro leads SWE-bench at 72.4% vs 62.8%. 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, Claude Sonnet 4 or Gemini 3 Pro?

Claude Sonnet 4 has the lower time-to-first-token (220 ms vs 220 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 1M.

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 Pro Elo cells are dated snapshots from the named source — we do not compute Arena ourselves.

Swap or Add Any Model to this Matchup

Interactive Comparison Diagram

Tug-of-War Matchup Matrix

Intelligence & Reasoning

Speed & Latency

Pricing & Capacity

Multi-Dimensional Capability Radar

Gemini 3 Pro

Claude Sonnet 4

Gemini 3 Pro

Full Benchmark Score Matrix

Workload Cost & Savings Calculator

Key Selection Recommendations

Recommended Workload Routing

Related Editorial Dispatches & Benchmark Notes

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

Cast Your Matchup Vote

Community Discussions (0)

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CompareLLM Matrix

Claude Sonnet 4

Gemini 3 Pro

Frequently Asked Questions

Related news

Similar Head-to-Head Comparisons

Swap or Add Any Model to this Matchup

Interactive Comparison Diagram

Tug-of-War Matchup Matrix

Intelligence & Reasoning

Speed & Latency

Pricing & Capacity

Multi-Dimensional Capability Radar

Gemini 3 Pro

Claude Sonnet 4

Gemini 3 Pro

Full Benchmark Score Matrix

Workload Cost & Savings Calculator

Key Selection Recommendations

Recommended Workload Routing

Related Editorial Dispatches & Benchmark Notes

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

Cast Your Matchup Vote

Community Discussions (0)

Share card

CompareLLM Matrix

Claude Sonnet 4

Gemini 3 Pro

Frequently Asked Questions

Related news

Similar Head-to-Head Comparisons