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Model comparison

Claude Opus 4.7 vs Claude Sonnet 4.5

Data verified

Head-to-head evidence from 4 shared benchmark results across 3 categories. Overall scores shown here use the public BenchAlign v5 ranking lane.

71.63/100
Margin
18.3pts
← winning
53.34/100
1 category wins0 category wins

BenchAlign evidence: Claude Opus 4.7 supported; Claude Sonnet 4.5 estimated. Intervals and evidence labels describe ranking uncertainty, not a guarantee for a specific workload.

Evidence parity. Claude Opus 4.7 and Claude Sonnet 4.5 share 4 comparable benchmark results. 1 of 8 categories are comparable. 18 results are unique to Claude Opus 4.7; 8 to Claude Sonnet 4.5.

Updated July 15, 2026
Shared results
4
Claude Opus 4.7 only
18
Claude Sonnet 4.5 only
8
Comparable categories
1 / 8

Pick Claude Opus 4.7 if you want the stronger benchmark profile. Claude Sonnet 4.5 only becomes the better choice if you want the cheaper token bill.

Confidence note. This is a partial-evidence comparison with 4 shared benchmark results across 3 evidence categories; 1 of 8 categories currently have scoreable aggregates for both models. Treat the verdict as directional until coverage is more balanced.

Why this result

Claude Opus 4.7 is clearly ahead on the provisional aggregate, 69 to 59. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.

Claude Opus 4.7's sharpest advantage is in mathematics, where it averages 38.6 against 11.2. The single biggest benchmark swing on the page is FrontierMath v2 (Tiers 1-3), 43.793% to 13.495%.

Claude Opus 4.7 is also the more expensive model on tokens at $5.00 input / $25.00 output per 1M tokens, versus $3.00 input / $15.00 output per 1M tokens for Claude Sonnet 4.5. Claude Opus 4.7 gives you the larger context window at 1M, compared with 200K for Claude Sonnet 4.5.

Category breakdown

Exact category averages are shown below. Not measured means BenchLM does not have enough sourced public coverage for that model and category.

Category scores and score margins for Claude Opus 4.7 and Claude Sonnet 4.5
CategoryClaude Opus 4.7ΔClaude Sonnet 4.5
MathClaude Opus 4.738.6Margin← 27.4Claude Sonnet 4.511.2
AgenticClaude Opus 4.7Not measuredMarginNo overlapClaude Sonnet 4.555.4
CodingClaude Opus 4.7Not measuredMarginNo overlapClaude Sonnet 4.577.2
ReasoningClaude Opus 4.7Not measuredMarginNo overlapClaude Sonnet 4.513.6
KnowledgeClaude Opus 4.7Not measuredMarginNo overlapClaude Sonnet 4.583.4

Decisive benchmark drivers

The largest measured benchmark gaps in this matchup, with exact reported values.

More
A · Claude Opus 4.7B · Claude Sonnet 4.5

  1. FrontierMath v2 (Tiers 1-3)

    Math
    Source ↗
    A 43.793%B 13.495%
    Winner: Claude Opus 4.7Δ 30.3
    FrontierMath v2 (Tiers 1-3): Claude Opus 4.7 scored 43.793%; Claude Sonnet 4.5 scored 13.495%. Claude Opus 4.7 wins this benchmark.

  2. FrontierMath v2 (Tier 4)

    Math
    Source ↗
    A 22.917%B 4.167%
    Winner: Claude Opus 4.7Δ 18.8
    FrontierMath v2 (Tier 4): Claude Opus 4.7 scored 22.917%; Claude Sonnet 4.5 scored 4.167%. Claude Opus 4.7 wins this benchmark.

Operational comparison

Runtime and commercial metrics are compared only when both models have a complete sourced value.

MetricClaude Opus 4.7Claude Sonnet 4.5Comparison
Input / output priceUSD per 1M tokensClaude Opus 4.7$5 input / $25 outputClaude Sonnet 4.5$3 input / $15 outputClaude Sonnet 4.5 has the lower combined listed price.
Generation speedtokens per secondClaude Opus 4.7Not availableClaude Sonnet 4.5Not availableA complete speed comparison is not available.
First-answer latencyseconds to first tokenClaude Opus 4.7Not availableClaude Sonnet 4.5Not availableA complete latency comparison is not available.
Context windowmaximum listed tokensClaude Opus 4.71MClaude Sonnet 4.5200KClaude Opus 4.7 lists the larger context window.

Benchmark Deep Dive

Agentic
BenchmarkClaude Opus 4.7Claude Sonnet 4.5Result
τ²-bench resultsSource 74%—Not comparable
Gert LabsSource 65.59%48.51%Claude Opus 4.7 leads
ResearchClawBenchSource 20.7%—Not comparable
OSWorld 2.0Source 13.9%—Not comparable
Terminal-Bench 2.0Source —50%Not comparable
OSWorld-VerifiedSource —61.4%Not comparable
VITA-BenchSource —17.0%Not comparable
JobBenchSource —27.7%Not comparable
Coding
BenchmarkClaude Opus 4.7Claude Sonnet 4.5Result
Vibe Code BenchSource 71.00%—Not comparable
React Native EvalsSource 82.8%—Not comparable
Terminal-Bench HardSource 54.5%—Not comparable
AA-SciCodeSource 50.1%—Not comparable
FrontierCodeSource 38.5%—Not comparable
SWE-bench VerifiedSource —77.2%Not comparable
Reasoning
BenchmarkClaude Opus 4.7Claude Sonnet 4.5Result
AA-LCRSource 67.0%—Not comparable
CritPtSource 5.1%—Not comparable
ARC-AGI-2Source —13.6%Not comparable
Knowledge
BenchmarkClaude Opus 4.7Claude Sonnet 4.5Result
Artificial Analysis Intelligence IndexSource 42.7%—Not comparable
AA-GPQA DiamondSource 88.5%—Not comparable
AA-HLESource 31.2%—Not comparable
AA-Omniscience IndexSource 14.2%—Not comparable
AA-Omniscience AccuracySource 43.5%—Not comparable
AA-Omniscience Hallucination RateSource 51.9%—Not comparable
GPQASource —83.4%Not comparable
MathClaude Opus 4.7 wins
BenchmarkClaude Opus 4.7Claude Sonnet 4.5Result
FrontierMath v2 (Tiers 1-3)Source 43.793%13.495%Claude Opus 4.7 leads
FrontierMath v2 (Tier 4)Source 22.917%4.167%Claude Opus 4.7 leads
AIME 2025Source —87%Not comparable
Multimodal
BenchmarkClaude Opus 4.7Claude Sonnet 4.5Result
AA-MMMU-ProSource 76.4%—Not comparable
Design Arena WebsiteSource 13281224Claude Opus 4.7 leads
Inst. Following
BenchmarkClaude Opus 4.7Claude Sonnet 4.5Result
AA-IFBenchSource 43.6%—Not comparable
Frequently Asked Questions (2)

Which is better, Claude Opus 4.7 or Claude Sonnet 4.5?

Claude Opus 4.7 is ahead on BenchLM's provisional leaderboard, 69 to 59. The biggest single separator in this matchup is FrontierMath v2 (Tiers 1-3), where the scores are 43.793% and 13.495%.

Which is better for math, Claude Opus 4.7 or Claude Sonnet 4.5?

Claude Opus 4.7 has the edge for math in this comparison, averaging 38.6 versus 11.2. Inside this category, FrontierMath v2 (Tiers 1-3) is the benchmark that creates the most daylight between them.

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Last updated: July 15, 2026

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