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Model comparison

Claude Opus 4.8 vs Command A+

Data verified

Head-to-head evidence from 17 shared benchmark results across 6 categories. Overall scores shown here use the public BenchAlign v5 ranking lane.

78.34/100
Margin
30.8pts
← winning
47.51/100
1 category wins0 category wins

Public leaderboard positions: Claude Opus 4.8 #5 (Supported); Command A+ #135 (Estimated). Intervals and evidence labels describe ranking uncertainty, not a guarantee for a specific workload.

Evidence parity. Claude Opus 4.8 and Command A+ share 17 comparable benchmark results. 1 of 8 categories are comparable. 36 results are unique to Claude Opus 4.8; 4 to Command A+.

Updated July 23, 2026
Shared results
17
Claude Opus 4.8 only
36
Command A+ only
4
Comparable categories
1 / 8

Pick Claude Opus 4.8 if you want the stronger benchmark profile. Command A+ only becomes the better choice if you want the cheaper token bill.

Confidence note. This is a partial-evidence comparison with 17 shared benchmark results across 6 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 4.8 is clearly ahead on the BenchAlign aggregate, 78.34 to 47.51. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.

Claude Opus 4.8's sharpest advantage is in multimodal & grounded, where it averages 77 against 59.3. The single biggest benchmark swing on the page is CharXiv, 89.9% to 52.7%.

Claude Opus 4.8 is also the more expensive model on tokens at $5.00 input / $25.00 output per 1M tokens, versus $2.50 input / $10.00 output per 1M tokens for Command A+. That is roughly 2.5x on output cost alone. Claude Opus 4.8 gives you the larger context window at 1M, compared with 128K for Command A+.

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 4.8 and Command A+
CategoryClaude Opus 4.8ΔCommand A+
MultimodalClaude Opus 4.877.0Margin← 17.7Command A+59.3
AgenticClaude Opus 4.880.3MarginNo overlapCommand A+Not measured
CodingClaude Opus 4.881.1MarginNo overlapCommand A+Not measured
KnowledgeClaude Opus 4.862.7MarginNo overlapCommand A+Not measured
MathClaude Opus 4.853.9MarginNo overlapCommand A+Not measured

Decisive benchmark drivers

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

More
A · Claude Opus 4.8B · Command A+

  1. CharXiv

    Multimodal
    Source ↗
    A 89.9%B 52.7%
    Winner: Claude Opus 4.8Δ 37.2
    CharXiv: Claude Opus 4.8 scored 89.9%; Command A+ scored 52.7%. Claude Opus 4.8 wins this benchmark.

Operational comparison

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

MetricClaude Opus 4.8Command A+Comparison
Input / output priceUSD per 1M tokensClaude Opus 4.8$5 input / $25 outputCommand A+$2.5 input / $10 outputCommand A+ has the lower combined listed price.
Generation speedtokens per secondClaude Opus 4.8Not availableCommand A+272 tok/sA complete speed comparison is not available.
First-answer latencyseconds to first tokenClaude Opus 4.8Not availableCommand A+0.25 sA complete latency comparison is not available.
Context windowmaximum listed tokensClaude Opus 4.81MCommand A+128KClaude Opus 4.8 lists the larger context window.

Benchmark Deep Dive

Agentic
BenchmarkClaude Opus 4.8Command A+Result
Terminal-Bench 2.0Source 74.6%—Not comparable
BrowseCompSource 84.3%—Not comparable
DeepSearchQASource 93.1%—Not comparable
OSWorld-VerifiedSource 83.4%—Not comparable
Finance Agent v2Source 53.9%—Not comparable
GDPval-AASource 1594714Claude Opus 4.8 leads
MCP AtlasSource 82.2%—Not comparable
ToolathlonSource 59.9%—Not comparable
Gert LabsSource 72.97%—Not comparable
AA Agentic IndexSource 47.2%9.2%Claude Opus 4.8 leads
τ²-bench resultsSource 94.4%80.7%Claude Opus 4.8 leads
GDPval-AASource 54.7%10.7%Claude Opus 4.8 leads
ResearchClawBenchSource 21.1%—Not comparable
OSWorld 2.0Source 20.6%—Not comparable
AA BriefcaseSource 1347—Not comparable
AA AutomationBenchSource 48.5%—Not comparable
AA EnterpriseOps-GymSource 44.0%—Not comparable
AA Harvey LABSource 91.1%—Not comparable
AA Tau3 BankingSource 27.6%—Not comparable
terminalBenchHardSource 58.3%25%Claude Opus 4.8 leads
aaTerminalBench21Source 84.6%—Not comparable
Coding
BenchmarkClaude Opus 4.8Command A+Result
SWE-bench VerifiedSource 88.6%—Not comparable
SWE-bench ProSource 69.2%—Not comparable
SWE MultilingualSource 84.4%—Not comparable
SWE MultimodalSource 38.4%—Not comparable
Terminal-Bench 2.0Source 74.6%—Not comparable
cursorBench31Source 58.4%—Not comparable
cursorBench32Source 62.3%—Not comparable
AA Coding IndexSource 74.3%27.9%Claude Opus 4.8 leads
AA-SciCodeSource 53.5%37.8%Claude Opus 4.8 leads
FrontierCode 1.1 MainSource 46.5%—Not comparable
Reasoning
BenchmarkClaude Opus 4.8Command A+Result
AA-LCRSource 67.7%46.0%Claude Opus 4.8 leads
CritPtSource 20.9%0.3%Claude Opus 4.8 leads
Knowledge
BenchmarkClaude Opus 4.8Command A+Result
GPQASource 93.6%—Not comparable
GPQA-DSource 93.6%—Not comparable
HLESource 57.9%—Not comparable
HLE w/o toolsSource 49.8%—Not comparable
Artificial Analysis Intelligence IndexSource 55.7%22.5%Claude Opus 4.8 leads
AA-GPQA DiamondSource 92.0%76.1%Claude Opus 4.8 leads
AA-HLESource 45.7%11.4%Claude Opus 4.8 leads
AA-Omniscience IndexSource 27.4%-4.0%Claude Opus 4.8 leads
AA-Omniscience AccuracySource 46.6%8.9%Claude Opus 4.8 leads
AA-Omniscience Hallucination RateSource 35.9%14.1%Command A+ leads
AA Openness IndexSource —38.9%Not comparable
Math
BenchmarkClaude Opus 4.8Command A+Result
USAMO 2026Source 96.7%—Not comparable
FrontierMath v2 (Tiers 1-3)Source 47.241%—Not comparable
FrontierMath v2 (Tier 4)Source 31.250%—Not comparable
Multilingual
BenchmarkClaude Opus 4.8Command A+Result
INCLUDESource 87.6%—Not comparable
MultimodalClaude Opus 4.8 wins
BenchmarkClaude Opus 4.8Command A+Result
OfficeQA ProSource 66.2%—Not comparable
ScreenSpot ProSource 87.9%—Not comparable
CharXivSource 89.9%52.7%Claude Opus 4.8 leads
CharXiv w/o toolsSource 80.5%—Not comparable
Design Arena WebsiteSource 1270—Not comparable
MMMUSource —75.1%Not comparable
MMMU-ProSource —63%Not comparable
AA-MMMU-ProSource —63.2%Not comparable
Inst. Following
BenchmarkClaude Opus 4.8Command A+Result
AA-IFBenchSource 62.2%73.9%Command A+ leads
Frequently Asked Questions (2)

Which is better, Claude Opus 4.8 or Command A+?

Claude Opus 4.8 is ahead on BenchLM's BenchAlign leaderboard, 78.34 to 47.51. The biggest single separator in this matchup is CharXiv, where the scores are 89.9% and 52.7%.

Which is better for multimodal and grounded tasks, Claude Opus 4.8 or Command A+?

Claude Opus 4.8 has the edge for multimodal and grounded tasks in this comparison, averaging 77 versus 59.3. Inside this category, CharXiv is the benchmark that creates the most daylight between them.

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