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BenchLM

Claude Opus 4.7 (Adaptive) vs GPT-5.6 Luna

Updated September 24, 2026. Rank says Claude Opus 4.7 (Adaptive) is ahead. Price, access, and your workload can each overturn that. Public scores include evidence status and uncertainty.

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Decision reading

Claude Opus 4.7 (Adaptive) has the higher public score estimate, 68.56 versus 65.6, but the 90% score intervals overlap. Treat that as a lead, not a settled winner. 9 results are shared. Category rows resting on Estimated evidence or different benchmark sets are marked directional and do not name a winner.

Model A
Anthropic logo

Anthropic

68.56/100

Estimated · Public rank #17

90% interval 57.0–80.1

Model B
OpenAI logo

OpenAI

65.6/100

Supported · Public rank #25

90% interval 60.5–70.7

Shared results
9
Claude Opus 4.7 (Adaptive) only
12
GPT-5.6 Luna only
20
Like-for-like categories
1 / 8
Estimated: Claude Opus 4.7 (Adaptive) · Supported: GPT-5.6 LunaHow the comparison works

Which one for your work

Recommendations appear only when a shared evidence basis or an explicit operating constraint supports the call. Secondary and unsupported use cases stay disclosed below the initial list.

  • Agentic work

    Tool use, computer use, and multi-step task completion

    Claude Opus 4.7 (Adaptive)

    Claude Opus 4.7 (Adaptive) leads on the public agentic lane, 59.1 to 55.3, with Supported evidence for both models, although the 90% intervals overlap.

    Confidence: limited
  • Long documents

    Prompts that approach the documented context limit

    GPT-5.6 Luna

    GPT-5.6 Luna has the larger documented context window.

    Confidence: documented
  • Chat turn cost

    1K fresh input + 500 output tokens

    GPT-5.6 Luna

    GPT-5.6 Luna has the lower estimated token cost for this stated workload. Costs use the listed standard API rates.

    Confidence: listed-rates
Show secondary and unsupported calls
  • Cache-heavy agent loop cost

    200K cached + 20K fresh input + 10K output tokens

    GPT-5.6 Luna

    GPT-5.6 Luna has the lower estimated token cost for this stated workload. Claude Opus 4.7 (Adaptive) has no published cached-input rate, so cached tokens use its listed input rate.

    Confidence: rate-fallback
  • Repository review cost

    50K fresh input + 3K output tokens

    GPT-5.6 Luna

    GPT-5.6 Luna has the lower estimated token cost for this stated workload. Costs use the listed standard API rates.

    Confidence: listed-rates
  • Coding work

    Code generation, repair, and software-engineering tasks

    Not enough matched evidence

    Claude Opus 4.7 (Adaptive) is scored on Estimated evidence for coding, so the reading is directional rather than like-for-like.

    Confidence: limited

Which one for a specific job

Choose a job from the LLM Selector's task catalog to see the category row it rests on, under the same basis rules as the table below. A directional row stays directional; choosing a job never creates a winner.

The same task catalog as the LLM Selector. Each job names the evidence surface it rests on; nothing here adds a new score.

57.8Claude Opus 4.7 (Adaptive)64.5GPT-5.6 Luna

Directional only · BenchAlign v5.7

GPT-5.6 Luna scores higher, but at least one score rests on Estimated evidence or a different benchmark set. Directional only, no winner.

Coding scores combine specific tasks and setups. Match the editor, harness, and effort to your workflow.

Same basis rules as the category table below

What is actually comparable

Shared results can support a head-to-head reading. Results present for only one model describe coverage, not superiority.

3 categories rest on Estimated evidence or different evidence sets. Those rows remain visible for coverage context but do not name a winner.

Shape of the matched evidence

Only shared public evidence is shown. Sparse evidence stays a ruled list rather than being closed into a radar shape.

Too few matched category axes support a radar. The ruled list below shows only shared benchmark results; positions use each benchmark’s normalized display scale when available.

Bars run 0–100 on each benchmark’s normalized display scale

Category results, on a stated basis

Each row shows the public-lane category score for both models: the BenchAlign v5.7 lane for agentic, coding, and knowledge, and the weighted public rows elsewhere, with the same rank each model page reports. A row is like-for-like only when both scores rest on Supported evidence or the same weighted set. Directional and not-comparable rows remain visible, but they never receive a winner.

Agentic

Like-for-like
Claude Opus 4.7 (Adaptive)
59.1
Supported · #19/105
GPT-5.6 Luna
55.3
Supported · #28/105
Basis
BenchAlign v5.7 lane · 7 vs 9 public rows
Reading
Claude Opus 4.7 (Adaptive) leads · intervals overlap

Coding

Directional only
Claude Opus 4.7 (Adaptive)
57.8
Estimated · #20/135
GPT-5.6 Luna
64.5
Supported · #9/135
Basis
BenchAlign v5.7 lane · 3 vs 7 public rows
Reading
Directional only

Multimodal

Directional only
Claude Opus 4.7 (Adaptive)
50.1
#38/50
GPT-5.6 Luna
67.1
#22/50
Basis
Provisional lane · 2 vs 1 weighted rows
Reading
Directional only

Knowledge

Directional only
Claude Opus 4.7 (Adaptive)
64.1
Estimated · #27/158
GPT-5.6 Luna
64.6
Supported · #22/158
Basis
BenchAlign v5.7 lane · 4 vs 6 public rows
Reading
Directional only

Reasoning

Not comparable
Claude Opus 4.7 (Adaptive)
53.6
Unranked · 3 rankable rows
GPT-5.6 Luna
54.7
#18/19
Basis
Provisional lane · 2 vs 2 weighted rows
Reading
Not comparable

Multilingual

Not comparable
Claude Opus 4.7 (Adaptive)
Not ranked
GPT-5.6 Luna
Not ranked
Basis
Provisional lane · 0 vs 0 weighted rows
Reading
Not comparable

Instruction following

Not comparable
Claude Opus 4.7 (Adaptive)
Not ranked
GPT-5.6 Luna
Not ranked
Basis
Provisional lane · 0 vs 0 weighted rows
Reading
Not comparable

Math

Not comparable
Claude Opus 4.7 (Adaptive)
Not ranked
GPT-5.6 Luna
94.2
Unranked · 3 rankable rows
Basis
Provisional lane · 0 vs 2 weighted rows
Reading
Not comparable

Ranks count the models scored in each category’s lane, so the agentic, coding, and knowledge denominators (BenchAlign v5.7) differ from the provisional-lane categories. Unranked scores sit on the provisional lane’s scale but never name a winner. Like-for-like rows within 0.5 points read as a practical tie.

Supported evidence per lane · bars run 0–100Methodology

What each workload costs

Three fixed token mixes turn per-token rates into comparable decisions. Each scenario states context fit and whether cached input had to fall back to the published list-input rate.

Chat turn

1K fresh input + 500 output tokens

Claude Opus 4.7 (Adaptive)
$0.0175
Fits in one request
GPT-5.6 Luna
$0.0008
Fits in one request

GPT-5.6 Luna has the lower modeled cost

Costs use the listed standard API rates.

Repository review

50K fresh input + 3K output tokens

Claude Opus 4.7 (Adaptive)
$0.325
Fits in one request
GPT-5.6 Luna
$0.0136
Fits in one request

GPT-5.6 Luna has the lower modeled cost

Costs use the listed standard API rates.

Cache-heavy agent loop

200K cached + 20K fresh input + 10K output tokens

Claude Opus 4.7 (Adaptive)
$1.35
Fits in one request
Cached input priced at the published list-input rate
GPT-5.6 Luna
$0.02
Fits in one request

GPT-5.6 Luna has the lower modeled cost

Claude Opus 4.7 (Adaptive) has no published cached-input rate, so cached tokens use its listed input rate.

Cached input falls back to the list input rate only where a cached rate is unpublished

Specification differences

Sourced differences are shown directly. Missing facts stay explicit instead of being inferred from a model name or family.

Context window

Maximum documented context; output-token limits may be lower.

Claude Opus 4.7 (Adaptive)

1M

GPT-5.6 Luna

Cached-input rate

A missing cached-input rate falls back to the listed input rate only in the stated workload estimate.

Claude Opus 4.7 (Adaptive)

Not published

GPT-5.6 Luna

$0.02 per 1M cached input tokens

OpenAI pricing

Provider availability

Claude Opus 4.7 (Adaptive)

Not sourced

GPT-5.6 Luna

Generally Available · OpenAI Responses API

OpenAI model catalog

Reasoning profile

Claude Opus 4.7 (Adaptive)

Reasoning

GPT-5.6 Luna

Reasoning

Weight access

Claude Opus 4.7 (Adaptive)

Proprietary

GPT-5.6 Luna

Proprietary

License

Claude Opus 4.7 (Adaptive)

Proprietary

GPT-5.6 Luna

Proprietary

Release date

Claude Opus 4.7 (Adaptive)

2026-04-16

GPT-5.6 Luna

2026-07-09

If you already use one of these models

Deployment change
The models list different providers, so authentication, endpoint behavior, limits, and feature support may change.
Quality signal
Claude Opus 4.7 (Adaptive) has the higher public score estimate, 68.56 versus 65.6, but the 90% score intervals overlap.
Workload cost
Repository review: $0.325 vs $0.0136. Cache-heavy agent loop: $1.35 vs $0.02.
Context tradeoff
GPT-5.6 Luna has the larger documented window (1.05M).
Run the same representative tasks against both endpoints before changing production traffic.

Questions

Which is better, Claude Opus 4.7 (Adaptive) or GPT-5.6 Luna?

Claude Opus 4.7 (Adaptive) has the higher public score estimate, 68.56 versus 65.6, but the 90% score intervals overlap. The higher estimate is not a decisive winner because the uncertainty ranges overlap.

Which is better for coding, Claude Opus 4.7 (Adaptive) or GPT-5.6 Luna?

GPT-5.6 Luna scores higher for coding on the public lane, 64.5 to 57.8. Claude Opus 4.7 (Adaptive) is scored on Estimated evidence for coding, so the reading is directional rather than like-for-like. BenchLM does not name a winner for coding from a directional reading; read the shared benchmark rows directly and test the models on the same task set.

Which is better for agentic tasks, Claude Opus 4.7 (Adaptive) or GPT-5.6 Luna?

Claude Opus 4.7 (Adaptive) leads the public agentic tasks lane, 59.1 to 55.3, with Supported evidence for both models, although the 90% intervals overlap.

Which costs less, Claude Opus 4.7 (Adaptive) or GPT-5.6 Luna?

For the stated presets, chat costs $0.0175 on Claude Opus 4.7 (Adaptive) and $0.0008 on GPT-5.6 Luna; repository review costs $0.325 and $0.0136; the cache-heavy agent loop costs $1.35 and $0.02. Claude Opus 4.7 (Adaptive) has no published cached-input rate, so cached tokens use its listed input rate.

Which has the larger context window, Claude Opus 4.7 (Adaptive) or GPT-5.6 Luna?

GPT-5.6 Luna has the larger documented context window: 1.05M, compared with 1M.

Benchmark evidence

The full public result ledger is available for audit without forcing a wide desktop table onto a phone.

Browse raw public benchmark evidence41 rows

Agentic

  • Terminal-Bench 2.0

    Claude Opus 4.7 (Adaptive)69.4%
    Source
    GPT-5.6 Luna—

    Not directly comparable

  • BrowseComp

    Claude Opus 4.7 (Adaptive)79.3%
    Source
    GPT-5.6 Luna83.3%
    Source

    GPT-5.6 Luna leads this result

  • MCP Atlas

    Claude Opus 4.7 (Adaptive)77.3%
    Source
    GPT-5.6 Luna—

    Not directly comparable

  • OSWorld-Verified

    Claude Opus 4.7 (Adaptive)78%
    Source
    GPT-5.6 Luna—

    Not directly comparable

  • CyberGym

    Claude Opus 4.7 (Adaptive)73.1%
    Source
    GPT-5.6 Luna77.9%
    Source

    GPT-5.6 Luna leads this result

  • OSWorld 2.0

    Claude Opus 4.7 (Adaptive)18.2%
    Source
    GPT-5.6 Luna45.6%
    Source

    GPT-5.6 Luna leads this result

  • JobBench

    Claude Opus 4.7 (Adaptive)45.9%
    Source
    GPT-5.6 Luna—

    Not directly comparable

  • Terminal-Bench 3.0

    Claude Opus 4.7 (Adaptive)—
    GPT-5.6 Luna14.3%
    Source

    Not directly comparable

  • Terminal-Bench 2.1

    Claude Opus 4.7 (Adaptive)—
    GPT-5.6 Luna84.7%
    Source

    Not directly comparable

  • ExploitGym

    Claude Opus 4.7 (Adaptive)—
    GPT-5.6 Luna12.4%
    Source

    Not directly comparable

  • Toolathlon

    Claude Opus 4.7 (Adaptive)—
    GPT-5.6 Luna53.4%
    Source

    Not directly comparable

  • Terminal-Bench 2.1 (Vals)

    Claude Opus 4.7 (Adaptive)—
    GPT-5.6 Luna79.0%
    Source

    Not directly comparable

  • ApprenticeBench

    Claude Opus 4.7 (Adaptive)—
    GPT-5.6 Luna7%
    Source

    Not directly comparable

Coding

  • SWE-bench Verified

    Claude Opus 4.7 (Adaptive)87.6%
    Source
    GPT-5.6 Luna—

    Not directly comparable

  • SWE-bench Pro

    Claude Opus 4.7 (Adaptive)64.3%
    Source
    GPT-5.6 Luna62.7%
    Source

    Claude Opus 4.7 (Adaptive) leads this result

  • Terminal-Bench 2.0

    Claude Opus 4.7 (Adaptive)69.4%
    Source
    GPT-5.6 Luna—

    Not directly comparable

  • Terminal-Bench 2.1

    Claude Opus 4.7 (Adaptive)—
    GPT-5.6 Luna84.7%
    Source

    Not directly comparable

  • DeepSWE

    Claude Opus 4.7 (Adaptive)—
    GPT-5.6 Luna67.2%
    Source

    Not directly comparable

  • FrontierCode 1.1 Extended

    Claude Opus 4.7 (Adaptive)—
    GPT-5.6 Luna55.1%
    Source

    Not directly comparable

  • cursorBench32

    Claude Opus 4.7 (Adaptive)—
    GPT-5.6 Luna61.1%
    Source

    Not directly comparable

  • VulcanBench v3

    Claude Opus 4.7 (Adaptive)—
    GPT-5.6 Luna85.5%
    Source

    Not directly comparable

  • SWE-bench (Vals)

    Claude Opus 4.7 (Adaptive)—
    GPT-5.6 Luna93.0%
    Source

    Not directly comparable

Reasoning

  • MRCR v2 128K-256K

    Claude Opus 4.7 (Adaptive)59.2%
    Source
    GPT-5.6 Luna—

    Not directly comparable

  • ARC-AGI-2

    Claude Opus 4.7 (Adaptive)75.8%
    Source
    GPT-5.6 Luna59.5%
    Source

    Claude Opus 4.7 (Adaptive) leads this result

  • ARC-AGI-3

    Claude Opus 4.7 (Adaptive)0.2%
    Source
    GPT-5.6 Luna0.2%
    Source

    Tie

Multimodal

  • OfficeQA Pro

    Claude Opus 4.7 (Adaptive)43.6%
    Source
    GPT-5.6 Luna—

    Not directly comparable

  • CharXiv

    Claude Opus 4.7 (Adaptive)91%
    Source
    GPT-5.6 Luna—

    Not directly comparable

  • CharXiv w/o tools

    Claude Opus 4.7 (Adaptive)82.1%
    Source
    GPT-5.6 Luna—

    Not directly comparable

  • MMMU-Pro

    Claude Opus 4.7 (Adaptive)—
    GPT-5.6 Luna78.4%
    Source

    Not directly comparable

  • MMMU-Pro w/ Python

    Claude Opus 4.7 (Adaptive)—
    GPT-5.6 Luna79.5%
    Source

    Not directly comparable

Knowledge

  • GPQA

    Claude Opus 4.7 (Adaptive)94.2%
    Source
    GPT-5.6 Luna92.3%
    Source

    Claude Opus 4.7 (Adaptive) leads this result

  • GPQA-D

    Claude Opus 4.7 (Adaptive)94.2%
    Source
    GPT-5.6 Luna92.3%
    Source

    Claude Opus 4.7 (Adaptive) leads this result

  • HLE

    Claude Opus 4.7 (Adaptive)54.7%
    Source
    GPT-5.6 Luna—

    Not directly comparable

  • HLE w/o tools

    Claude Opus 4.7 (Adaptive)46.9%
    Source
    GPT-5.6 Luna—

    Not directly comparable

  • HealthBench Professional

    Claude Opus 4.7 (Adaptive)—
    GPT-5.6 Luna55.7%
    Source

    Not directly comparable

  • HealthBench Hard

    Claude Opus 4.7 (Adaptive)—
    GPT-5.6 Luna32.0%
    Source

    Not directly comparable

  • GPQA Diamond (Vals)

    Claude Opus 4.7 (Adaptive)—
    GPT-5.6 Luna91.7%
    Source

    Not directly comparable

  • MMLU-Pro (Vals)

    Claude Opus 4.7 (Adaptive)—
    GPT-5.6 Luna86.0%
    Source

    Not directly comparable

Math

  • FrontierMath (legacy)

    Claude Opus 4.7 (Adaptive)43.8%
    Source
    GPT-5.6 Luna78.6%
    Source

    GPT-5.6 Luna leads this result

  • FrontierMath v2 (Tiers 1-3)

    Claude Opus 4.7 (Adaptive)—
    GPT-5.6 Luna78.600%
    Source

    Not directly comparable

  • FrontierMath v2 (Tier 4)

    Claude Opus 4.7 (Adaptive)—
    GPT-5.6 Luna58.500%
    Source

    Not directly comparable

41 public results · 9 shared

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Last updated September 24, 2026