Pairwise benchmark snapshot · Aug 17, 2026noindex (thin pair)

Claude Sonnet 5 vs Pareto Code Router benchmark

Name: Claude Sonnet 5 vs Pareto Code Router AI benchmark comparison
Creator: CompareLLM
License: https://creativecommons.org/licenses/by/4.0/

This page compares Claude Sonnet 5 (Anthropic) and Pareto Code Router (openrouter) using the latest snapshots we have as of Aug 17, 2026. Pareto Code Router wins on output price at $-1,000,000/1M. Pareto Code Router 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 5

Anthropic workhorse. Official $2/$10 per 1M tokens made permanent on Aug 10 2026.

Elo 1,556$10/1M out

openrouter

Pareto Code Router

Auto-discovered from OpenRouter (openrouter/pareto-code). Preview until a second source matches.

$-1000000/1M 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 5 (7)vsPareto Code Router (3)

Claude Sonnet 5: 7W (70%)Overall: Claude Sonnet 5Pareto Code Router: 3W (30%)

← Claude Sonnet 5Pareto Code Router →

Claude Sonnet 5 (5/5)

Intelligence & Reasoning

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

Preference Elo

1,556vs—

Coding Elo

1,562vs—

SWE-bench

73.8%vs—

LiveBench

70.4%vs—

GPQA Diamond

82.8%vs—

Claude Sonnet 5: 5WPareto Code Router: 0W

Claude Sonnet 5 (2/2)

Speed & Latency

Generation throughput and time to first token responsiveness

Output speed

118 tok/svs—

Time to first token

175 msvs—

Claude Sonnet 5: 2WPareto Code Router: 0W

Pareto Code Router (3/3)

Pricing & Capacity

Cost per million tokens and max context window length

Output price

$10/1Mvs$-1,000,000/1M

Input price

$2/1Mvs$-1,000,000/1M

Context window

1Mvs2M

Claude Sonnet 5: 0WPareto Code Router: 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 AdvantageClaude Sonnet 5 4/6

Preference Elo

No shared data

Throughput Speed

No shared data

Price Efficiency

Pareto Code Router

$1000010.00/1M cheaper

Full Benchmark Score Matrix

—

Elo

High is better

1,556

EloHigh is better

—

Code Elo

High is better

1,562

Code EloHigh is better

—

LiveBench

High is better

70.4%

LiveBenchHigh is better

—

SWE-bench

High is better

73.8%

SWE-benchHigh is better

—

GPQA

High is better

82.8%

GPQAHigh is better

—

TTFT

Low is better

175 ms

TTFTLow is better

—

Speed

High is better

118 tok/s

SpeedHigh is better

—

In $

Low is better

$2/1M

In $Low is better

$-1,000,000/1M

Out $

Low is better

$10/1M

Out $Low is better

$-1,000,000/1M

Context

High is better

ContextHigh is better

2M+100%

Key Selection Recommendations

1
Pareto Code Router:Pick Pareto Code Router when you are optimizing output cost.
2
Pareto Code Router:Pick Pareto Code Router for million-token RAG or long-document jobs.

Recommended Workload Routing

Repo / coding agentsinsufficient data

Need SWE-bench on both sides.

High-volume chatPareto Code Router

Lower output list price ($-1,000,000/1M).

Voice / low-latency UIinsufficient data

Need TTFT on both sides.

Long-document RAGPareto Code Router

Larger window (2M).

Screenshots / visionClaude Sonnet 5

Claude Sonnet 5 is the side marked multimodal in the catalog.

Target Workload	Recommended Pick	Evaluation Rationale
Repo / coding agents	insufficient data	Need SWE-bench on both sides.
High-volume chat	Pareto Code Router	Lower output list price ($-1,000,000/1M).
Voice / low-latency UI	insufficient data	Need TTFT on both sides.
Long-document RAG	Pareto Code Router	Larger window (2M).
Screenshots / vision	Claude Sonnet 5	Claude Sonnet 5 is the side marked multimodal in the catalog.

Related Editorial Dispatches & Benchmark Notes

View all news

compareAug 10, 2026

Sonnet vs Opus in 2026: same family, different invoice

Usually Sonnet 5 vs Opus 5. Coding delta versus output $/1M. The workhorse question.

priceAug 10, 2026

Claude Sonnet 5 at $2/$10: the 2026 Anthropic workhorse

Aug 10 2026 made the $2/$10 list permanent. Sonnet is the default Claude unless the repo is actually on fire.

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.

Community Sentiment

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CompareLLM Matrix

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LIVE

Anthropic

Claude Sonnet 5

Elo 1,556

LiveBench70.4%

SWE-bench73.8%

Speed118 tok/s

Output cost$10/1M

openrouter

Pareto Code Router

Elo n/a

LiveBench—

SWE-bench—

Speed—

Output cost$-1,000,000/1M

Frequently Asked Questions

Which is better overall, Claude Sonnet 5 or Pareto Code Router?: We do not have preference Elo for both models, so we do not declare an overall winner. Compare the metrics that exist.
Which is better at coding, Claude Sonnet 5 or Pareto Code Router?: SWE-bench is missing for at least one model, so we do not rank coding from a single number.
Which is cheaper to run in production?: Pareto Code Router output tokens are $-1,000,000/1M versus $10/1M. Input prices and retry rates still move the real bill.
Which is faster, Claude Sonnet 5 or Pareto Code Router?: We do not have TTFT for both models.
Which has the larger context window?: Pareto Code Router 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 5 and Pareto Code Router Elo cells are dated snapshots from the named source — we do not compute Arena ourselves.

Similar Head-to-Head Comparisons

All Claude Sonnet 5 matchups →|All Pareto Code Router matchups →

Claude Sonnet 5 vs Claude Sonnet 4.5 (previous sonnet)Claude Opus 4.5 vs Claude Sonnet 5 Claude Opus 4.6 vs Claude Sonnet 5 Claude Opus 4.8 vs Claude Sonnet 5 Claude Fable 5 vs Claude Sonnet 5 Claude Opus 5 vs Claude Sonnet 5

Claude Sonnet 5 vs Pareto Code Router benchmark

Interactive Comparison Diagram

Matchup Breakdown

Tug-of-War Matchup Matrix

Category wins across intelligence, speed, and pricing efficiency.

Claude Sonnet 5 (7)vsPareto Code Router (3)

Claude Sonnet 5: 7W (70%)Overall: Claude Sonnet 5Pareto Code Router: 3W (30%)

← Claude Sonnet 5Pareto Code Router →

Claude Sonnet 5 (5/5)

Intelligence & Reasoning

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

Preference Elo

1,556vs—

Coding Elo

1,562vs—

SWE-bench

73.8%vs—

LiveBench

70.4%vs—

GPQA Diamond

82.8%vs—

Claude Sonnet 5: 5WPareto Code Router: 0W

Claude Sonnet 5 (2/2)

Speed & Latency

Generation throughput and time to first token responsiveness

Output speed

118 tok/svs—

Time to first token

175 msvs—

Claude Sonnet 5: 2WPareto Code Router: 0W

Pareto Code Router (3/3)

Pricing & Capacity

Cost per million tokens and max context window length

Output price

$10/1Mvs$-1,000,000/1M

Input price

$2/1Mvs$-1,000,000/1M

Context window

1Mvs2M

Claude Sonnet 5: 0WPareto Code Router: 3W

Recommended Workload Routing

Repo / coding agentsinsufficient data

Need SWE-bench on both sides.

High-volume chatPareto Code Router

Lower output list price ($-1,000,000/1M).

Voice / low-latency UIinsufficient data

Need TTFT on both sides.

Long-document RAGPareto Code Router

Larger window (2M).

Screenshots / visionClaude Sonnet 5

Claude Sonnet 5 is the side marked multimodal in the catalog.

Target Workload	Recommended Pick	Evaluation Rationale
Repo / coding agents	insufficient data	Need SWE-bench on both sides.
High-volume chat	Pareto Code Router	Lower output list price ($-1,000,000/1M).
Voice / low-latency UI	insufficient data	Need TTFT on both sides.
Long-document RAG	Pareto Code Router	Larger window (2M).
Screenshots / vision	Claude Sonnet 5	Claude Sonnet 5 is the side marked multimodal in the catalog.

Frequently Asked Questions

Which is better overall, Claude Sonnet 5 or Pareto Code Router?

We do not have preference Elo for both models, so we do not declare an overall winner. Compare the metrics that exist.

Which is better at coding, Claude Sonnet 5 or Pareto Code Router?

SWE-bench is missing for at least one model, so we do not rank coding from a single number.

Which is cheaper to run in production?

Pareto Code Router output tokens are $-1,000,000/1M versus $10/1M. Input prices and retry rates still move the real bill.

Which is faster, Claude Sonnet 5 or Pareto Code Router?

We do not have TTFT for both models.

Which has the larger context window?

Pareto Code Router 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 5 and Pareto Code Router 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

No shared data

No shared data

Pareto Code Router

Full Benchmark Score Matrix

Key Selection Recommendations

Recommended Workload Routing

Related Editorial Dispatches & Benchmark Notes

Sonnet vs Opus in 2026: same family, different invoice

Claude Sonnet 5 at $2/$10: the 2026 Anthropic workhorse

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

Cast Your Matchup Vote

Community Discussions (0)

Share card

CompareLLM Matrix

Claude Sonnet 5

Pareto Code Router

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

No shared data

No shared data

Pareto Code Router

Full Benchmark Score Matrix

Key Selection Recommendations

Recommended Workload Routing

Related Editorial Dispatches & Benchmark Notes

Sonnet vs Opus in 2026: same family, different invoice

Claude Sonnet 5 at $2/$10: the 2026 Anthropic workhorse

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

Cast Your Matchup Vote

Community Discussions (0)

Share card

CompareLLM Matrix

Claude Sonnet 5

Pareto Code Router

Frequently Asked Questions

Related news

Similar Head-to-Head Comparisons