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Model compare

Claude Opus 4.6 vs GPT-5.6 Sol

The readout for Claude Opus 4.6 and GPT-5.6 Sol, before the detailed comparison sheet.

Model A

Claude Opus 4.6

Anthropic

Contender
vs

Model B

GPT-5.6 Sol

OpenAI

Leading

Key Takeaways

Weighted outcome: GPT-5.6 Sol. Benchmark capability categories carry 80%, while price, API performance, and availability carry 20%.

Decision read

GPT-5.6 Sol

GPT-5.6 Sol has the higher weighted result; Model A / B score 8 to 92.

Evidence depth

133 data points

Includes 34 benchmark rows, 0 audit samples, and 10 provider examples.

Selection signal

Start with GPT-5.6 Sol

The charts below split 44 high-signal samples across speed, scores, and audit health.

Change comparison

Switch either side of this report to compare another model with the same LMSpeed data pipeline.

Select a different model to open a new comparison URL.

Comparison sheet

This report only uses LMSpeed data for Claude Opus 4.6 and GPT-5.6 Sol: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.

Model compare
Claude Opus 4.6
GPT-5.6 Sol
Overall leaderContenderLeading
Weighted overall score8.0 pts92.0 pts
Benchmark category leads0 categories7 categories
Operational advantagesFree providers, Provider coverageCheapest input price, Average speed, First-token latency
Context window1M tokens1.1M tokens
Max output128K tokens128K tokens
Modalities

Input

TextImageFile

Output

Text

Input

FileImageText

Output

Text
Features
Text inputImage inputFile inputText outputTool callingStructured outputsJSON modeReasoning
Text inputImage inputFile inputText outputTool callingStructured outputsJSON modeReasoning

The overall result weights benchmark capability categories at 80% and price, API speed/latency, and availability at 20%. Recent test volume does not affect the winner, and missing benchmark categories are excluded.

Model metadata

Model compare
Claude Opus 4.6
GPT-5.6 Sol
DeveloperAnthropicOpenAI
ReleasedFeb 2026Jul 2026
ParametersNo dataNo data
TokenizerClaudeGPT
Knowledge cutoffNo data2026-02-16
OpenRouter IDanthropic/claude-opus-4.6openai/gpt-5.6-sol
ReferencesNo dataNo data

When to choose each model

This report only uses LMSpeed data for Claude Opus 4.6 and GPT-5.6 Sol: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.

Claude Opus 4.6

Claude Opus 4.6 has these operational advantages: Free providers, Provider coverage.

GPT-5.6 Sol

GPT-5.6 Sol is stronger in benchmark categories (Agents, Coding, Reasoning, Knowledge, Math) and operational dimensions (Cheapest input price, Average speed, First-token latency).

Benchmark score comparison

Third-party benchmark profile synced into LMSpeed; only metrics available for both models are shown.

Category performance

Compare benchmark category scores on a 0-100 scale. Select a category to inspect the gap.

Model A coverage
8 / 8
Model B coverage
7 / 8
Shared
7 shared categories

Avg. score

Claude Opus 4.6

51.8

Avg. score

GPT-5.6 Sol

60.2

Agents

GPT-5.6 Sol leads by 10.7

Claude Opus 4.654.3
GPT-5.6 Sol65

Coding

GPT-5.6 Sol leads by 4.2

Claude Opus 4.656.6
GPT-5.6 Sol60.8

Reasoning

GPT-5.6 Sol leads by 7.5

Claude Opus 4.653.4
GPT-5.6 Sol60.9

Knowledge

GPT-5.6 Sol leads by 2.6

Claude Opus 4.653.3
GPT-5.6 Sol55.9

Math

GPT-5.6 Sol leads by 10.3

Claude Opus 4.655.7
GPT-5.6 Sol66

Multilingual

Claude Opus 4.6

Claude Opus 4.648.4
GPT-5.6 Sol-

Multimodal

GPT-5.6 Sol leads by 11.7

Claude Opus 4.647.8
GPT-5.6 Sol59.5

Instruction following

GPT-5.6 Sol leads by 8.7

Claude Opus 4.644.8
GPT-5.6 Sol53.5

Professional benchmark details

Metric-level scores with benchmark source, rank depth, confidence, error, and evaluation date where available.

Aggregatereported

BenchLM overall score

SourceClaude Opus 4.6

Claude Opus 4.6

62.0

Rank #41/111 · confidence 4 · eval date 2026-02-01

+17.0

GPT-5.6 Sol

winner

79.0

Rank #5/111 · confidence 4 · eval date 2026-07-09

Pricingverified

Input price

SourceClaude Opus 4.6 (Non-reasoning, High Effort)

Claude Opus 4.6

$5.00/M

Rank #168/186 · confidence 4

+$1.00/M

GPT-5.6 Sol

winner

$4.00/M

Rank #165/186 · confidence 4

Pricingverified

Blended price

SourceClaude Opus 4.6 (Non-reasoning, High Effort)

Claude Opus 4.6

$10.00/M

Rank #169/186 · confidence 4

+$2.00/M

GPT-5.6 Sol

winner

$8.00/M

Rank #167/186 · confidence 4

Pricingverified

Output price

SourceClaude Opus 4.6 (Non-reasoning, High Effort)

Claude Opus 4.6

$25.00/M

Rank #169/186 · confidence 4

+$5.00/M

GPT-5.6 Sol

winner

$20.00/M

Rank #167/186 · confidence 4

Reasoningreported

CritPt

SourceClaude Opus 4.6

Claude Opus 4.6

2.8

Rank #57/88 · confidence 4 · eval date 2026-02-01

+29.5

GPT-5.6 Sol

winner

32.3

Rank #1/88 · confidence 4 · eval date 2026-07-09

Reasoningreported

AA-LCR

SourceClaude Opus 4.6

Claude Opus 4.6

67.0

Rank #71/106 · confidence 4 · eval date 2026-02-01

+17.0

GPT-5.6 Sol

winner

84.0

Rank #4/106 · confidence 4 · eval date 2026-07-09

Reasoningverified

GPQA

SourceClaude Opus 4.6 (Non-reasoning, High Effort)

Claude Opus 4.6

84.0%

Rank #75/218 · confidence 4

+8.8%

GPT-5.6 Sol

winner

92.8%

Rank #13/218 · confidence 4

Reasoningverified

HLE

SourceClaude Opus 4.6 (Non-reasoning, High Effort)

Claude Opus 4.6

19.1%

Rank #89/216 · confidence 4

+26.9%

GPT-5.6 Sol

winner

46.0%

Rank #14/216 · confidence 4

Reasoningreported

BenchLM Reasoning score

SourceClaude Opus 4.6

Claude Opus 4.6

67.1

Rank #42/67 · confidence 4 · eval date 2026-02-01

+3.8

GPT-5.6 Sol

winner

70.9

Rank #35/67 · confidence 4 · eval date 2026-07-09

Codingreported

SWE-bench Pro

SourceClaude Opus 4.6

Claude Opus 4.6

53.4

Rank #41/50 · confidence 4 · eval date 2026-02-01

+11.2

GPT-5.6 Sol

winner

64.6

Rank #7/50 · confidence 4 · eval date 2026-07-09

Codingreported

AA-SciCode

SourceClaude Opus 4.6

Claude Opus 4.6

45.7

Rank #54/113 · confidence 4 · eval date 2026-02-01

+11.4

GPT-5.6 Sol

winner

57.1

Rank #9/113 · confidence 4 · eval date 2026-07-09

Codingreported

BenchLM Coding score

SourceClaude Opus 4.6

Claude Opus 4.6

50.3

Rank #54/87 · confidence 4 · eval date 2026-02-01

+11.7

GPT-5.6 Sol

winner

62.0

Rank #22/87 · confidence 4 · eval date 2026-07-09

Mathreported

BenchLM Math score

SourceClaude Opus 4.6

Claude Opus 4.6

58.6

Rank #29/63 · confidence 4 · eval date 2026-02-01

+38.4

GPT-5.6 Sol

winner

97.0

Rank #1/63 · confidence 4 · eval date 2026-07-09

Mathreported

FrontierMath v2 (Tiers 1-3)

SourceClaude Opus 4.6

Claude Opus 4.6

40.7

Rank #10/47 · confidence 4 · eval date 2026-02-01

+48.3

GPT-5.6 Sol

winner

89.0

Rank #1/47 · confidence 4 · eval date 2026-07-09

Mathreported

FrontierMath v2 (Tier 4)

SourceClaude Opus 4.6

Claude Opus 4.6

22.9

Rank #11/36 · confidence 4 · eval date 2026-02-01

+60.1

GPT-5.6 Sol

winner

83.0

Rank #2/36 · confidence 4 · eval date 2026-07-09

Knowledgereported

Artificial Analysis Intelligence Index

SourceClaude Opus 4.6

Claude Opus 4.6

26.4

Rank #57/117 · confidence 4 · eval date 2026-02-01

+32.5

GPT-5.6 Sol

winner

58.9

Rank #1/117 · confidence 4 · eval date 2026-07-09

Knowledgereported

GPQA-D

SourceClaude Opus 4.6

Claude Opus 4.6

89.2

Rank #19/32 · confidence 4 · eval date 2026-02-01

+5.4

GPT-5.6 Sol

winner

94.6

Rank #2/32 · confidence 4 · eval date 2026-07-09

Knowledgereported

HealthBench Hard

SourceClaude Opus 4.6

Claude Opus 4.6

14.8

Rank #8/8 · confidence 4 · eval date 2026-02-01

+18.3

GPT-5.6 Sol

winner

33.1

Rank #3/8 · confidence 4 · eval date 2026-07-09

Knowledgereported

AA-GPQA Diamond

SourceClaude Opus 4.6

Claude Opus 4.6

84.0

Rank #67/113 · confidence 4 · eval date 2026-02-01

+10.1

GPT-5.6 Sol

winner

94.1

Rank #5/113 · confidence 4 · eval date 2026-07-09

Knowledgereported

AA-HLE

SourceClaude Opus 4.6

Claude Opus 4.6

19.1

Rank #74/114 · confidence 4 · eval date 2026-02-01

+30.4

GPT-5.6 Sol

winner

49.5

Rank #5/114 · confidence 4 · eval date 2026-07-09

Knowledgereported

AA-Omniscience Accuracy

SourceClaude Opus 4.6

Claude Opus 4.6

45.8

Rank #23/106 · confidence 4 · eval date 2026-02-01

+13.6

GPT-5.6 Sol

winner

59.4

Rank #5/106 · confidence 4 · eval date 2026-07-09

Knowledgereported

BenchLM Knowledge score

SourceClaude Opus 4.6

Claude Opus 4.6

79.8

Rank #15/83 · confidence 4 · eval date 2026-02-01

+4.8

GPT-5.6 Sol

winner

84.6

Rank #7/83 · confidence 4 · eval date 2026-07-09

Knowledgereported

AA-Omniscience Hallucination Rate

SourceClaude Opus 4.6

Claude Opus 4.6

80.1

Rank #43/106 · confidence 4 · eval date 2026-02-01

+12.1

GPT-5.6 Sol

winner

92.2

Rank #12/106 · confidence 4 · eval date 2026-07-09

Knowledgereported

AA-Omniscience Index

SourceClaude Opus 4.6

Claude Opus 4.6

2.4

Rank #36/45 · confidence 4 · eval date 2026-02-01

+19.6

GPT-5.6 Sol

winner

22.0

Rank #16/45 · confidence 4 · eval date 2026-07-09

Multimodalreported

MMMU-Pro

SourceClaude Opus 4.6

Claude Opus 4.6

77.3

Rank #21/31 · confidence 4 · eval date 2026-02-01

+5.7

GPT-5.6 Sol

winner

83.0

Rank #4/31 · confidence 4 · eval date 2026-07-09

Multimodalreported

BenchLM Multimodal Grounded score

SourceClaude Opus 4.6

Claude Opus 4.6

59.5

Rank #40/56 · confidence 4 · eval date 2026-02-01

+28.0

GPT-5.6 Sol

winner

87.5

Rank #5/56 · confidence 4 · eval date 2026-07-09

Multimodalreported

AA-MMMU-Pro

SourceClaude Opus 4.6

Claude Opus 4.6

72.5

Rank #45/68 · confidence 4 · eval date 2026-02-01

+10.9

GPT-5.6 Sol

winner

83.4

Rank #6/68 · confidence 4 · eval date 2026-07-09

Instruction followingreported

BenchLM Instruction Following score

SourceClaude Opus 4.6

Claude Opus 4.6

52.6

Rank #49/52 · confidence 4 · eval date 2026-02-01

+36.5

GPT-5.6 Sol

winner

89.1

Rank #21/52 · confidence 4 · eval date 2026-07-09

Instruction followingreported

AA-IFBench

SourceClaude Opus 4.6

Claude Opus 4.6

44.6

Rank #59/84 · confidence 4 · eval date 2026-02-01

+28.1

GPT-5.6 Sol

winner

72.7

Rank #27/84 · confidence 4 · eval date 2026-07-09

Agentsreported

BenchLM Agentic score

SourceClaude Opus 4.6

Claude Opus 4.6

63.5

Rank #36/76 · confidence 4 · eval date 2026-02-01

+30.1

GPT-5.6 Sol

winner

93.6

Rank #1/76 · confidence 4 · eval date 2026-07-09

Agentsreported

BrowseComp

SourceClaude Opus 4.6

Claude Opus 4.6

83.7

Rank #11/32 · confidence 4 · eval date 2026-02-01

+8.5

GPT-5.6 Sol

winner

92.2

Rank #1/32 · confidence 4 · eval date 2026-07-09

Agentsreported

CyberGym

SourceClaude Opus 4.6

Claude Opus 4.6

66.6

Rank #11/15 · confidence 4 · eval date 2026-02-01

+17.9

GPT-5.6 Sol

winner

84.5

Rank #1/15 · confidence 4 · eval date 2026-07-09

Agentsreported

Terminal-Bench 2.0

SourceClaude Opus 4.6

Claude Opus 4.6

65.4

Rank #24/53 · confidence 4 · eval date 2026-02-01

+26.5

GPT-5.6 Sol

winner

91.9

Rank #1/53 · confidence 4 · eval date 2026-07-09

Agentsreported

τ²-bench results

SourceClaude Opus 4.6

Claude Opus 4.6

84.8

Rank #46/82 · confidence 4 · eval date 2026-02-01

+0.3

GPT-5.6 Sol

winner

85.1

Rank #44/82 · confidence 4 · eval date 2026-07-09

API audit comparison

Latest completed audits from shared providers, with four safety and integrity score groups plus report links.

Provider
Claude Opus 4.6
GPT-5.6 Sol
No completed audits are available from shared providers yet.

Provider examples

Speed aggregates and input/output pricing share each provider row for real API selection and migration cost checks.

Provider
Claude Opus 4.6
GPT-5.6 Sol
Kunkunout API20 tests

Claude Opus 4.6

speed / latency

40 tok/s / 16141ms

input / output

No data

GPT-5.6 Sol

speed / latency

N/A / N/A

input / output

No data

钠 API20 tests

Claude Opus 4.6

speed / latency

42 tok/s / 2282ms

input / output

No data

GPT-5.6 Sol

speed / latency

N/A / N/A

input / output

No data

Rnglg2 API15 tests

Claude Opus 4.6

speed / latency

57 tok/s / 3926ms

input / output

No data

GPT-5.6 Sol

speed / latency

N/A / N/A

input / output

No data

ModelPool10 tests

Claude Opus 4.6

speed / latency

84 tok/s / 3916ms

input / output

No data

GPT-5.6 Sol

speed / latency

N/A / N/A

input / output

No data

YUNWU API10 tests

Claude Opus 4.6

speed / latency

N/A / N/A

input / output

No data

GPT-5.6 Sol

speed / latency

53 tok/s / 2164ms

input / output

No data

APIMart

Claude Opus 4.6

claude-opus-4-6

speed / latency

No data

input / output

$3.84/M/$19.18/M

GPT-5.6 Sol

gpt-5.6-sol

speed / latency

No data

input / output

$0/M/$0/M

Dext API

Claude Opus 4.6

claude-opus-4-6

speed / latency

No data

input / output

$0.240/M/$1.20/M

GPT-5.6 Sol

gpt-5-6-sol

speed / latency

No data

input / output

$0/M/$0/M

兔子API

Claude Opus 4.6

claude-opus-4-6-low

speed / latency

No data

input / output

$0/request

GPT-5.6 Sol

gpt-5.6-sol

speed / latency

No data

input / output

$0/request

鲨鱼魔法

Claude Opus 4.6

[lq]q|Kiro/claude-opus-4-6-thinking

speed / latency

No data

input / output

$43.20/request

GPT-5.6 Sol

[lq]t|RS/gpt-5.6-sol

speed / latency

No data

input / output

$0/M/$0/M

10dian-API

Claude Opus 4.6

anti/claude-opus-4-6-c

speed / latency

No data

input / output

$0.200/request

GPT-5.6 Sol

gpt-5.6-sol

speed / latency

No data

input / output

$0.0050/M/$0.030/M

FAQ

Weighted outcome: GPT-5.6 Sol. Benchmark capability categories carry 80%, while price, API performance, and availability carry 20%.

Why is this comparison indexable?
It has 6 verifiable comparison points, and both models have pricing or benchmark data.
Are missing metrics invented?
No. Metrics without LMSpeed data are omitted from this report.

Rankings are based on community-submitted tests and periodic health probes. Advisory only, not official data.