Pairwise benchmark snapshot · Aug 16, 2026

Claude Sonnet 4.5 vs Grok 4.6 benchmark

Name: Claude Sonnet 4.5 vs Grok 4.6 AI benchmark comparison
Creator: CompareLLM
License: https://creativecommons.org/licenses/by/4.0/

This page compares Claude Sonnet 4.5 (Anthropic) 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 68 points (1,592 vs 1,524; seed-bootstrap (Aug 16, 2026)). On SWE-bench coding, Claude Sonnet 4.5 resolves 70.1% versus 69.1% (seed-bootstrap (Aug 1, 2026)). Grok 4.6 streams faster (118 tok/s) while Grok 4.6 is the cheaper output token ($6/1M). Claude Sonnet 4.5 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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Anthropic

Claude Sonnet 4.5

Workhorse Anthropic model: most of Opus coding quality at a mid-tier price.

Elo 1,524$15/1M 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 3.7 Sonnet vs GPT-5

Interactive Comparison Diagram

Matchup Breakdown

Tug-of-War Matchup Matrix

Category wins across intelligence, speed, and pricing efficiency.

Claude Sonnet 4.5 (2)vsGrok 4.6 (8)

Claude Sonnet 4.5: 2W (20%)Overall: Grok 4.6Grok 4.6: 8W (80%)

← Claude Sonnet 4.5Grok 4.6 →

Grok 4.6 (4/5)

Intelligence & Reasoning

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

Preference Elo

1,524vs1,592

Coding Elo

1,531vs1,568

SWE-bench

70.1%vs69.1%

LiveBench

67.4%vs71.4%

GPQA Diamond

80.2%vs84.6%

Claude Sonnet 4.5: 1WGrok 4.6: 4W

Grok 4.6 (2/2)

Speed & Latency

Generation throughput and time to first token responsiveness

Output speed

88 tok/svs118 tok/s

Time to first token

240 msvs195 ms

Claude Sonnet 4.5: 0WGrok 4.6: 2W

Grok 4.6 (2/3)

Pricing & Capacity

Cost per million tokens and max context window length

Output price

$15/1Mvs$6/1M

Input price

$3/1Mvs$2/1M

Context window

1Mvs500k

Claude Sonnet 4.5: 1WGrok 4.6: 2W

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 AdvantageGrok 4.6 5/6

Preference Elo

Grok 4.6

68 pts advantage

Throughput Speed

Grok 4.6

30 tok/s faster

Price Efficiency

Grok 4.6

$9.00/1M cheaper

Full Benchmark Score Matrix

—

Elo

High is better

1,524

EloHigh is better

1,592+4%

Code Elo

High is better

1,531

Code EloHigh is better

1,568+2%

LiveBench

High is better

67.4%

LiveBenchHigh is better

71.4%+6%

SWE-bench

High is better

+1%70.1%

SWE-benchHigh is better

69.1%

GPQA

High is better

80.2%

GPQAHigh is better

84.6%+5%

TTFT

Low is better

240 ms

TTFTLow is better

195 ms+23%

Speed

High is better

88 tok/s

SpeedHigh is better

118 tok/s+34%

In $

Low is better

$3/1M

In $Low is better

$2/1M+50%

Out $

Low is better

$15/1M

Out $Low is better

$6/1M+150%

Context

High is better

+100%1M

ContextHigh is better

500k

Interactive Simulator

Workload Cost & Savings Calculator

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

Save up to 52% with Grok 4.6

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 4.5$330.00 / mo

In: $105.00Out: $225.00

Grok 4.6$160.00 / mo

In: $70.00Out: $90.00

Estimated Cost Delta

Grok 4.6 is estimated to save $170.00/month ($2,040/year).

Based on 50M tokens (30% gen)

Key Selection Recommendations

1
Claude Sonnet 4.5:Pick Claude Sonnet 4.5 when repo-level coding accuracy is the constraint.
2
Grok 4.6:Pick Grok 4.6 when you are optimizing output cost.
3
Grok 4.6:Pick Grok 4.6 when time-to-first-token matters more than peak Elo.

Recommended Workload Routing

Repo / coding agentsClaude Sonnet 4.5

Higher SWE-bench (70.1%).

High-volume chatGrok 4.6

Lower output list price ($6/1M).

Voice / low-latency UIGrok 4.6

Lower TTFT (195 ms).

Long-document RAGClaude Sonnet 4.5

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	Claude Sonnet 4.5	Higher SWE-bench (70.1%).
High-volume chat	Grok 4.6	Lower output list price ($6/1M).
Voice / low-latency UI	Grok 4.6	Lower TTFT (195 ms).
Long-document RAG	Claude Sonnet 4.5	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.

launchFeb 18, 2026

Claude Sonnet 4.5 is the previous workhorse — still a valid vs baseline

Most of Opus 4.5 coding at a mid-tier price. Sonnet 5 replaced it as the buy; 4.5 remains a compare baseline.

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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CompareLLM Matrix

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LIVE

Anthropic

Claude Sonnet 4.5

Elo 1,524

LiveBench67.4%

SWE-bench70.1%

Speed88 tok/s

Output cost$15/1M

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, Claude Sonnet 4.5 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, Claude Sonnet 4.5 or Grok 4.6?: Claude Sonnet 4.5 leads SWE-bench at 70.1% vs 69.1%. SWE-bench is one harness, not your repo.
Which is cheaper to run in production?: Grok 4.6 output tokens are $6/1M versus $15/1M. Input prices and retry rates still move the real bill.
Which is faster, Claude Sonnet 4.5 or Grok 4.6?: Grok 4.6 has the lower time-to-first-token (195 ms vs 240 ms). Tokens/sec is a separate column if you care about long completions.
Which has the larger context window?: Claude Sonnet 4.5 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. Claude Sonnet 4.5 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 Claude Sonnet 4.5 matchups →|All Grok 4.6 matchups →

Claude Sonnet 4.5 vs Claude Sonnet 4 (previous sonnet)Claude Sonnet 4.5 vs Claude Sonnet 5 (next sonnet)Grok 4.6 vs Grok 4 (previous grok)Claude Opus 4.5 vs Grok 4.6 Claude Opus 4.6 vs Grok 4.6 Claude Opus 4.8 vs Grok 4.6

Claude Sonnet 4.5 vs Grok 4.6 benchmark

Interactive Comparison Diagram

Matchup Breakdown

Tug-of-War Matchup Matrix

Category wins across intelligence, speed, and pricing efficiency.

Claude Sonnet 4.5 (2)vsGrok 4.6 (8)

Claude Sonnet 4.5: 2W (20%)Overall: Grok 4.6Grok 4.6: 8W (80%)

← Claude Sonnet 4.5Grok 4.6 →

Grok 4.6 (4/5)

Intelligence & Reasoning

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

Preference Elo

1,524vs1,592

Coding Elo

1,531vs1,568

SWE-bench

70.1%vs69.1%

LiveBench

67.4%vs71.4%

GPQA Diamond

80.2%vs84.6%

Claude Sonnet 4.5: 1WGrok 4.6: 4W

Grok 4.6 (2/2)

Speed & Latency

Generation throughput and time to first token responsiveness

Output speed

88 tok/svs118 tok/s

Time to first token

240 msvs195 ms

Claude Sonnet 4.5: 0WGrok 4.6: 2W

Grok 4.6 (2/3)

Pricing & Capacity

Cost per million tokens and max context window length

Output price

$15/1Mvs$6/1M

Input price

$3/1Mvs$2/1M

Context window

1Mvs500k

Claude Sonnet 4.5: 1WGrok 4.6: 2W

Recommended Workload Routing

Repo / coding agentsClaude Sonnet 4.5

Higher SWE-bench (70.1%).

High-volume chatGrok 4.6

Lower output list price ($6/1M).

Voice / low-latency UIGrok 4.6

Lower TTFT (195 ms).

Long-document RAGClaude Sonnet 4.5

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	Claude Sonnet 4.5	Higher SWE-bench (70.1%).
High-volume chat	Grok 4.6	Lower output list price ($6/1M).
Voice / low-latency UI	Grok 4.6	Lower TTFT (195 ms).
Long-document RAG	Claude Sonnet 4.5	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, Claude Sonnet 4.5 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, Claude Sonnet 4.5 or Grok 4.6?

Claude Sonnet 4.5 leads SWE-bench at 70.1% vs 69.1%. SWE-bench is one harness, not your repo.

Which is cheaper to run in production?

Grok 4.6 output tokens are $6/1M versus $15/1M. Input prices and retry rates still move the real bill.

Which is faster, Claude Sonnet 4.5 or Grok 4.6?

Grok 4.6 has the lower time-to-first-token (195 ms vs 240 ms). Tokens/sec is a separate column if you care about long completions.

Which has the larger context window?

Claude Sonnet 4.5 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. Claude Sonnet 4.5 and Grok 4.6 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

Grok 4.6

Grok 4.6

Grok 4.6

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

Claude Sonnet 4.5 is the previous workhorse — still a valid vs baseline

Grok 4 remains the previous xAI flagship on this catalog

Cast Your Matchup Vote

Community Discussions (0)

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CompareLLM Matrix

Claude Sonnet 4.5

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

Grok 4.6

Grok 4.6

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

Claude Sonnet 4.5 is the previous workhorse — still a valid vs baseline

Grok 4 remains the previous xAI flagship on this catalog

Cast Your Matchup Vote

Community Discussions (0)

Share card

CompareLLM Matrix

Claude Sonnet 4.5

Grok 4.6

Frequently Asked Questions

Related news

Similar Head-to-Head Comparisons