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Model comparison

Claude Opus 4.7 vs GPT-OSS 120B

Data verified

Head-to-head evidence from 15 shared benchmark results across 6 categories. Overall scores shown here use the public BenchAlign v5 ranking lane.

71.63/100
Margin
21.7pts
← winning
49.97/100
0 category wins0 category wins

BenchAlign evidence: Claude Opus 4.7 supported; GPT-OSS 120B supported. Intervals and evidence labels describe ranking uncertainty, not a guarantee for a specific workload.

Evidence parity. Claude Opus 4.7 and GPT-OSS 120B share 15 comparable benchmark results. 0 of 8 categories are comparable. 7 results are unique to Claude Opus 4.7; 13 to GPT-OSS 120B.

Updated July 15, 2026
Shared results
15
Claude Opus 4.7 only
7
GPT-OSS 120B only
13
Comparable categories
0 / 8

Benchmark data for Claude Opus 4.7 and GPT-OSS 120B is coming soon on BenchLM.

Confidence note. This is a partial-evidence comparison with 15 shared benchmark results across 6 evidence categories; 0 of 8 categories currently have scoreable aggregates for both models. Treat the verdict as directional until coverage is more balanced.

Why this result

BenchLM has partial data for these models, but not enough overlapping benchmark coverage to produce a fair score-level comparison yet.

Claude Opus 4.7 is priced at $5.00 input / $25.00 output per 1M tokens, versus $0.00 input / $0.00 output per 1M tokens for GPT-OSS 120B. Claude Opus 4.7 has the larger context window at 1M, compared with 128K for GPT-OSS 120B.

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 GPT-OSS 120B
CategoryClaude Opus 4.7ΔGPT-OSS 120B
MathClaude Opus 4.738.6MarginNo overlapGPT-OSS 120BNot measured

Operational comparison

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

MetricClaude Opus 4.7GPT-OSS 120BComparison
Input / output priceUSD per 1M tokensClaude Opus 4.7$5 input / $25 outputGPT-OSS 120B$0 input / $0 outputGPT-OSS 120B has the lower combined listed price.
Generation speedtokens per secondClaude Opus 4.7Not availableGPT-OSS 120B262 tok/sA complete speed comparison is not available.
First-answer latencyseconds to first tokenClaude Opus 4.7Not availableGPT-OSS 120B0.79 sA complete latency comparison is not available.
Context windowmaximum listed tokensClaude Opus 4.71MGPT-OSS 120B128KClaude Opus 4.7 lists the larger context window.

Benchmark Deep Dive

Agentic
BenchmarkClaude Opus 4.7GPT-OSS 120BResult
τ²-bench resultsSource 74%65.8%Claude Opus 4.7 leads
Gert LabsSource 65.59%29.61%Claude Opus 4.7 leads
ResearchClawBenchSource 20.7%—Not comparable
OSWorld 2.0Source 13.9%—Not comparable
AA Agentic IndexSource —13.2%Not comparable
APEX-Agents-AASource —3.1%Not comparable
GDPval-AASource —15.0%Not comparable
GDPval-AASource —799Not comparable
AA EnterpriseOps-GymSource —25.5%Not comparable
AA Harvey LABSource —0.0%Not comparable
AA ITBenchSource —5.6%Not comparable
Coding
BenchmarkClaude Opus 4.7GPT-OSS 120BResult
Vibe Code BenchSource 71.00%—Not comparable
React Native EvalsSource 82.8%71.6%Claude Opus 4.7 leads
Terminal-Bench HardSource 54.5%23.5%Claude Opus 4.7 leads
AA-SciCodeSource 50.1%38.9%Claude Opus 4.7 leads
FrontierCodeSource 38.5%—Not comparable
AA Coding IndexSource —30.4%Not comparable
AA LiveCodeBenchSource —87.8%Not comparable
Reasoning
BenchmarkClaude Opus 4.7GPT-OSS 120BResult
AA-LCRSource 67.0%50.7%Claude Opus 4.7 leads
CritPtSource 5.1%1.1%Claude Opus 4.7 leads
Knowledge
BenchmarkClaude Opus 4.7GPT-OSS 120BResult
Artificial Analysis Intelligence IndexSource 42.7%23.8%Claude Opus 4.7 leads
AA-GPQA DiamondSource 88.5%78.2%Claude Opus 4.7 leads
AA-HLESource 31.2%18.5%Claude Opus 4.7 leads
AA-Omniscience IndexSource 14.2%-50.0%Claude Opus 4.7 leads
AA-Omniscience AccuracySource 43.5%21.5%Claude Opus 4.7 leads
AA-Omniscience Hallucination RateSource 51.9%91.2%Claude Opus 4.7 leads
AA Openness IndexSource —38.9%Not comparable
AA MMLU-ProSource —80.8%Not comparable
Math
BenchmarkClaude Opus 4.7GPT-OSS 120BResult
FrontierMath v2 (Tiers 1-3)Source 43.793%—Not comparable
FrontierMath v2 (Tier 4)Source 22.917%—Not comparable
AA AIME 2025Source —93.4%Not comparable
Multilingual
BenchmarkClaude Opus 4.7GPT-OSS 120BResult
AA Global-MMLU-LiteSource —82.8%Not comparable
Multimodal
BenchmarkClaude Opus 4.7GPT-OSS 120BResult
AA-MMMU-ProSource 76.4%—Not comparable
Design Arena WebsiteSource 13281002Claude Opus 4.7 leads
Inst. Following
BenchmarkClaude Opus 4.7GPT-OSS 120BResult
AA-IFBenchSource 43.6%69.0%GPT-OSS 120B leads
Frequently Asked Questions (3)

Can I compare Claude Opus 4.7 and GPT-OSS 120B on BenchLM yet?

Not fully yet. BenchLM is tracking both models, but the sourced benchmark breakdown for this comparison is still coming soon.

Why does this comparison show “coming soon”?

BenchLM only shows category winners and benchmark-level calls when we have sourced results that can be compared fairly. For these models, the public benchmark coverage is not complete enough yet.

What data is available for Claude Opus 4.7 and GPT-OSS 120B today?

Claude Opus 4.7: $5.00 input / $25.00 output per 1M tokens GPT-OSS 120B: $0.00 input / $0.00 output per 1M tokens Both model pages still include creator, context window, reasoning mode, and other metadata while benchmark coverage fills in.

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