Pairwise benchmark snapshot · Aug 16, 2026

Gemini 3 Flash vs Grok 4.6 benchmark

Name: Gemini 3 Flash vs Grok 4.6 AI benchmark comparison
Creator: CompareLLM
License: https://creativecommons.org/licenses/by/4.0/

This page compares Gemini 3 Flash (Google) and Grok 4.6 (xAI) using the latest snapshots we have as of Aug 16, 2026. On preference Elo, Grok 4.6 is ahead by 97 points (1,592 vs 1,495; seed-bootstrap (Aug 16, 2026)). On SWE-bench coding, Gemini 3 Flash resolves 75.8% versus 69.1% (seed-bootstrap (Aug 1, 2026)). Gemini 3 Flash streams faster (190 tok/s) while Gemini 3 Flash is the cheaper output token ($3/1M). Gemini 3 Flash has the larger context window (1M 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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Google

Gemini 3 Flash

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

Elo 1,495$3/1M out

xAI

Grok 4.6

xAI Aug 12 2026 post-training refresh of Grok 4.5. Same $2/$6 API price, 500k context, stronger agentic traces.

Elo 1,592$6/1M 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.

Gemini 3 Flash (6)vsGrok 4.6 (4)

Gemini 3 Flash: 6W (60%)Overall: Gemini 3 FlashGrok 4.6: 4W (40%)

← Gemini 3 FlashGrok 4.6 →

Grok 4.6 (4/5)

Intelligence & Reasoning

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

Preference Elo

1,495vs1,592

Coding Elo

1,510vs1,568

SWE-bench

75.8%vs69.1%

LiveBench

66.8%vs71.4%

GPQA Diamond

78.4%vs84.6%

Gemini 3 Flash: 1WGrok 4.6: 4W

Gemini 3 Flash (2/2)

Speed & Latency

Generation throughput and time to first token responsiveness

Output speed

190 tok/svs118 tok/s

Time to first token

95 msvs195 ms

Gemini 3 Flash: 2WGrok 4.6: 0W

Gemini 3 Flash (3/3)

Pricing & Capacity

Cost per million tokens and max context window length

Output price

$3/1Mvs$6/1M

Input price

$0.5/1Mvs$2/1M

Context window

1Mvs500k

Gemini 3 Flash: 3WGrok 4.6: 0W

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 AdvantageEven 3–3

Preference Elo

Grok 4.6

97 pts advantage

Throughput Speed

Gemini 3 Flash

72 tok/s faster

Price Efficiency

Gemini 3 Flash

$3.00/1M cheaper

Full Benchmark Score Matrix

—

Elo

High is better

1,495

EloHigh is better

1,592+6%

Code Elo

High is better

1,510

Code EloHigh is better

1,568+4%

LiveBench

High is better

66.8%

LiveBenchHigh is better

71.4%+7%

SWE-bench

High is better

+10%75.8%

SWE-benchHigh is better

69.1%

GPQA

High is better

78.4%

GPQAHigh is better

84.6%+8%

TTFT

Low is better

+105%95 ms

TTFTLow is better

195 ms

Speed

High is better

+61%190 tok/s

SpeedHigh is better

118 tok/s

In $

Low is better

+300%$0.5/1M

In $Low is better

$2/1M

Out $

Low is better

+100%$3/1M

Out $Low is better

$6/1M

Context

High is better

+110%1M

ContextHigh is better

500k

Interactive Simulator

Workload Cost & Savings Calculator

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

Save up to 61% 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)

Gemini 3 Flash$62.50 / mo

In: $17.50Out: $45.00

Grok 4.6$160.00 / mo

In: $70.00Out: $90.00

Estimated Cost Delta

Gemini 3 Flash is estimated to save $97.50/month ($1,170/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 ($3/1M).

Voice / low-latency UIGemini 3 Flash

Lower TTFT (95 ms).

Long-document RAGGemini 3 Flash

Larger window (1M).

Screenshots / visionGrok 4.6

Both accept images. Defaulting to the higher-Elo side (Grok 4.6).

Target Workload	Recommended Pick	Evaluation Rationale
Repo / coding agents	Gemini 3 Flash	Higher SWE-bench (75.8%).
High-volume chat	Gemini 3 Flash	Lower output list price ($3/1M).
Voice / low-latency UI	Gemini 3 Flash	Lower TTFT (95 ms).
Long-document RAG	Gemini 3 Flash	Larger window (1M).
Screenshots / vision	Grok 4.6	Both accept images. Defaulting to the higher-Elo side (Grok 4.6).

Related Editorial Dispatches & Benchmark Notes

View all news

compareAug 12, 2026

Grok vs ChatGPT: price and Elo, not a personality contest

Brand hub remaps to top xAI vs top OpenAI. After Aug 12 that is Grok 4.6 vs Sol.

launchAug 12, 2026

Grok 4.6 (Aug 12): post-training refresh, same $2/$6 list

xAI’s Aug 12 2026 refresh of Grok 4.5. 500k context. The Grok vs ChatGPT hub remaps here.

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.

launchJul 10, 2025

Grok 4 remains the previous xAI flagship on this catalog

2025-07 row. 4.6 is the buy. We keep 4 so upgrade pairs and old inbound links resolve.

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LIVE

Google

Gemini 3 Flash

Elo 1,495

LiveBench66.8%

SWE-bench75.8%

Speed190 tok/s

Output cost$3/1M

xAI

Grok 4.6

Elo 1,592

LiveBench71.4%

SWE-bench69.1%

Speed118 tok/s

Output cost$6/1M

Frequently Asked Questions

Which is better overall, Gemini 3 Flash or Grok 4.6?: Grok 4.6 has the higher preference Elo in our latest snapshot (1,592). “Better” still depends on coding, price, and latency — see the table.
Which is better at coding, Gemini 3 Flash or Grok 4.6?: Gemini 3 Flash leads SWE-bench at 75.8% vs 69.1%. SWE-bench is one harness, not your repo.
Which is cheaper to run in production?: Gemini 3 Flash output tokens are $3/1M versus $6/1M. Input prices and retry rates still move the real bill.
Which is faster, Gemini 3 Flash or Grok 4.6?: Gemini 3 Flash has the lower time-to-first-token (95 ms vs 195 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 500k.
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 Flash and Grok 4.6 Elo cells are dated snapshots from the named source — we do not compute Arena ourselves.

Similar Head-to-Head Comparisons

All Gemini 3 Flash matchups →|All Grok 4.6 matchups →

Gemini 3 Flash vs Gemini 2.5 Flash (previous gemini-flash)Gemini 3 Flash vs Gemini 3.6 Flash (next gemini-flash)Grok 4.6 vs Grok 4 (previous grok)Gemini 2.0 Flash Thinking vs Gemini 3 Flash Gemini 3.7 Flash vs Gemini 3 Flash Gemini 3 Pro vs Grok 4.6

Gemini 3 Flash vs Grok 4.6 benchmark

Interactive Comparison Diagram

Matchup Breakdown

Tug-of-War Matchup Matrix

Category wins across intelligence, speed, and pricing efficiency.

Gemini 3 Flash (6)vsGrok 4.6 (4)

Gemini 3 Flash: 6W (60%)Overall: Gemini 3 FlashGrok 4.6: 4W (40%)

← Gemini 3 FlashGrok 4.6 →

Grok 4.6 (4/5)

Intelligence & Reasoning

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

Preference Elo

1,495vs1,592

Coding Elo

1,510vs1,568

SWE-bench

75.8%vs69.1%

LiveBench

66.8%vs71.4%

GPQA Diamond

78.4%vs84.6%

Gemini 3 Flash: 1WGrok 4.6: 4W

Gemini 3 Flash (2/2)

Speed & Latency

Generation throughput and time to first token responsiveness

Output speed

190 tok/svs118 tok/s

Time to first token

95 msvs195 ms

Gemini 3 Flash: 2WGrok 4.6: 0W

Gemini 3 Flash (3/3)

Pricing & Capacity

Cost per million tokens and max context window length

Output price

$3/1Mvs$6/1M

Input price

$0.5/1Mvs$2/1M

Context window

1Mvs500k

Gemini 3 Flash: 3WGrok 4.6: 0W

Recommended Workload Routing

Repo / coding agentsGemini 3 Flash

Higher SWE-bench (75.8%).

High-volume chatGemini 3 Flash

Lower output list price ($3/1M).

Voice / low-latency UIGemini 3 Flash

Lower TTFT (95 ms).

Long-document RAGGemini 3 Flash

Larger window (1M).

Screenshots / visionGrok 4.6

Both accept images. Defaulting to the higher-Elo side (Grok 4.6).

Target Workload	Recommended Pick	Evaluation Rationale
Repo / coding agents	Gemini 3 Flash	Higher SWE-bench (75.8%).
High-volume chat	Gemini 3 Flash	Lower output list price ($3/1M).
Voice / low-latency UI	Gemini 3 Flash	Lower TTFT (95 ms).
Long-document RAG	Gemini 3 Flash	Larger window (1M).
Screenshots / vision	Grok 4.6	Both accept images. Defaulting to the higher-Elo side (Grok 4.6).

Frequently Asked Questions

Which is better overall, Gemini 3 Flash or Grok 4.6?

Grok 4.6 has the higher preference Elo in our latest snapshot (1,592). “Better” still depends on coding, price, and latency — see the table.

Which is better at coding, Gemini 3 Flash or Grok 4.6?

Gemini 3 Flash leads SWE-bench at 75.8% vs 69.1%. SWE-bench is one harness, not your repo.

Which is cheaper to run in production?

Gemini 3 Flash output tokens are $3/1M versus $6/1M. Input prices and retry rates still move the real bill.

Which is faster, Gemini 3 Flash or Grok 4.6?

Gemini 3 Flash has the lower time-to-first-token (95 ms vs 195 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 500k.

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 Flash and Grok 4.6 Elo cells are dated snapshots from the named source — we do not compute Arena ourselves.

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Interactive Comparison Diagram

Tug-of-War Matchup Matrix

Intelligence & Reasoning

Speed & Latency

Pricing & Capacity

Multi-Dimensional Capability Radar

Grok 4.6

Gemini 3 Flash

Gemini 3 Flash

Full Benchmark Score Matrix

Workload Cost & Savings Calculator

Key Selection Recommendations

Recommended Workload Routing

Related Editorial Dispatches & Benchmark Notes

Grok vs ChatGPT: price and Elo, not a personality contest

Grok 4.6 (Aug 12): post-training refresh, same $2/$6 list

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

Grok 4 remains the previous xAI flagship on this catalog

Cast Your Matchup Vote

Community Discussions (0)

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CompareLLM Matrix

Gemini 3 Flash

Grok 4.6

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

Grok 4.6

Gemini 3 Flash

Gemini 3 Flash

Full Benchmark Score Matrix

Workload Cost & Savings Calculator

Key Selection Recommendations

Recommended Workload Routing

Related Editorial Dispatches & Benchmark Notes

Grok vs ChatGPT: price and Elo, not a personality contest

Grok 4.6 (Aug 12): post-training refresh, same $2/$6 list

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

Grok 4 remains the previous xAI flagship on this catalog

Cast Your Matchup Vote

Community Discussions (0)

Share card

CompareLLM Matrix

Gemini 3 Flash

Grok 4.6

Frequently Asked Questions

Related news

Similar Head-to-Head Comparisons