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.

Back to models

Data points: 122

Key Takeaways

The readout for Claude Opus 4.6 and O3 Mini, before the detailed comparison sheet.

Decision read

Claude Opus 4.6

Claude Opus 4.6 currently has the stronger profile, with verified wins split 5 to 1.

Evidence depth

122 data points

Includes 26 benchmark rows, 1 audit samples, and 9 provider examples.

Selection signal

Start with Claude Opus 4.6

The charts below split 36 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.

Model AModel B

Select a different model to open a new comparison URL.

Model compare Claude Opus 4.6 vs O3 Mini claude-opus-4-6-vs-o3-mini	Model A Claude Opus 4.6	Model B O3 Mini
Overall leader	Leading	Contender
Verified metric wins	5 wins	1 wins
Where it leads	Cheapest input price, First-token latency, Free providers, Provider coverage, Recent tests	Average speed
Model metadata	Claude Opus 4.6 exposes 1M tokens; notable signals: Text input, Image input, File input, Text output.	O3 Mini exposes 200K tokens; notable signals: Text input, File input, Text output, Tool calling.
Developer	Anthropic	OpenAI
Context window	1M tokens	200K tokens
Max output	128K tokens	100K tokens
Released	Feb 2026	Feb 2025
Modalities	Input TextImageFile Output Text	Input TextFile Output Text
Features	Text inputImage inputFile inputText outputTool callingStructured outputsJSON modeReasoning	Text inputFile inputText outputTool callingStructured outputsJSON modeReasoning
Parameters	No data	No data
Tokenizer	Claude	GPT
Knowledge cutoff	No data	2023-10-31
OpenRouter ID	anthropic/claude-opus-4.6	openai/o3-mini-high
References	No data	No data

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: 7 / 8
Model B coverage: 6 / 8
Shared: 6 shared categories

Claude Opus 4.6O3 Mini

Avg. score

Claude Opus 4.6

65.5

Avg. score

O3 Mini

59.2

Selected category

Instruction following

O3 Mini leads by 49.3

Professional benchmark details

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

Group

Aggregateverified

BenchLM overall score

SourceClaude Opus 4.6

Claude Opus 4.6

winner

86.0

Rank #7/82 · confidence 4 · eval date 2026-02-01

+31.0

O3 Mini

55.0

Rank #43/82 · confidence 1 · eval date 2025-01-31

Performanceverified

Output speed

SourceClaude Opus 4.6 (Non-reasoning, High Effort)

Claude Opus 4.6

44.3 tok/s

Rank #66/78 · confidence 4

+180.2 tok/s

O3 Mini

winner

224.5 tok/s

Rank #4/78 · confidence 4

Performanceverified

Time to first answer token

SourceClaude Opus 4.6 (Non-reasoning, High Effort)

Claude Opus 4.6

winner

1.89 s

Rank #31/78 · confidence 4

+13.41 s

O3 Mini

15.30 s

Rank #48/78 · confidence 4

Performanceverified

Time to first token

SourceClaude Opus 4.6 (Non-reasoning, High Effort)

Claude Opus 4.6

winner

1.89 s

Rank #51/78 · confidence 4

+13.41 s

O3 Mini

15.30 s

Rank #65/78 · confidence 4

Pricingverified

Output price

SourceClaude Opus 4.6 (Non-reasoning, High Effort)

Claude Opus 4.6

$25.00/M

Rank #83/95 · confidence 4

+$20.60/M

O3 Mini

winner

$4.40/M

Rank #56/95 · confidence 4

Pricingverified

Blended price

SourceClaude Opus 4.6 (Non-reasoning, High Effort)

Claude Opus 4.6

$10.00/M

Rank #83/95 · confidence 4

+$8.07/M

O3 Mini

winner

$1.93/M

Rank #57/95 · confidence 4

Pricingverified

Input price

SourceClaude Opus 4.6 (Non-reasoning, High Effort)

Claude Opus 4.6

$5.00/M

Rank #83/95 · confidence 4

+$3.90/M

O3 Mini

winner

$1.10/M

Rank #58/95 · confidence 4

Reasoningverified

BenchLM Reasoning score

SourceClaude Opus 4.6

Claude Opus 4.6

winner

88.2

Rank #7/57 · confidence 4 · eval date 2026-02-01

+20.2

O3 Mini

68.0

Rank #19/57 · confidence 1 · eval date 2025-01-31

Reasoningverified

MMLU-Pro

SourceClaude Opus 4.6

Claude Opus 4.6

winner

82.0%

Rank #31/74 · confidence 4 · eval date 2026-02-01

+1.8%

O3 Mini

80.2%

Rank #42/74 · confidence 4

Reasoningverified

GPQA

SourceClaude Opus 4.6 (Non-reasoning, High Effort)

Claude Opus 4.6

winner

84.0%

Rank #32/103 · confidence 4

+6.7%

O3 Mini

77.3%

Rank #54/103 · confidence 4

Reasoningverified

HLE

SourceClaude Opus 4.6 (Non-reasoning, High Effort)

Claude Opus 4.6

winner

18.6%

Rank #40/103 · confidence 4

+6.3%

O3 Mini

12.3%

Rank #52/103 · confidence 4

Codingverified

SWE-bench Verified

SourceClaude Opus 4.6

Claude Opus 4.6

winner

80.8

Rank #6/28 · confidence 4 · eval date 2026-02-01

+31.5

O3 Mini

49.3

Rank #26/28 · confidence 1 · eval date 2025-01-31

Codingverified

Terminal-Bench Hard

SourceClaude Opus 4.6

Claude Opus 4.6

winner

48.5

Rank #9/59 · confidence 4 · eval date 2026-02-01

+41.7

O3 Mini

6.8

Rank #54/59 · confidence 1 · eval date 2025-01-31

Codingverified

AA Coding Index

SourceClaude Opus 4.6

Claude Opus 4.6

winner

47.6

Rank #10/61 · confidence 4 · eval date 2026-02-01

+29.7

O3 Mini

17.9

Rank #54/61 · confidence 1 · eval date 2025-01-31

Codingverified

BenchLM Coding score

SourceClaude Opus 4.6

Claude Opus 4.6

winner

84.9

Rank #13/69 · confidence 4 · eval date 2026-02-01

+36.4

O3 Mini

48.5

Rank #45/69 · confidence 1 · eval date 2025-01-31

Codingverified

AA-SciCode

SourceClaude Opus 4.6

Claude Opus 4.6

winner

45.7

Rank #21/63 · confidence 4 · eval date 2026-02-01

+5.8

O3 Mini

39.9

Rank #39/63 · confidence 1 · eval date 2025-01-31

Codingverified

SciCode

SourceClaude Opus 4.6 (Non-reasoning, High Effort)

Claude Opus 4.6

winner

45.7%

Rank #22/101 · confidence 4

+5.9%

O3 Mini

39.8%

Rank #49/101 · confidence 4

Knowledgeverified

BenchLM Knowledge score

SourceClaude Opus 4.6

Claude Opus 4.6

winner

90.1

Rank #9/67 · confidence 4 · eval date 2026-02-01

+29.4

O3 Mini

60.7

Rank #36/67 · confidence 1 · eval date 2025-01-31

Knowledgeverified

Artificial Analysis Intelligence Index

SourceClaude Opus 4.6

Claude Opus 4.6

winner

37.8

Rank #23/66 · confidence 4 · eval date 2026-02-01

+18.8

O3 Mini

19.0

Rank #51/66 · confidence 1 · eval date 2025-01-31

Knowledgeverified

AA-GPQA Diamond

SourceClaude Opus 4.6

Claude Opus 4.6

winner

84.0

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

+9.2

O3 Mini

74.8

Rank #44/63 · confidence 1 · eval date 2025-01-31

Knowledgeverified

AA-HLE

SourceClaude Opus 4.6

Claude Opus 4.6

winner

18.6

Rank #32/63 · confidence 4 · eval date 2026-02-01

+9.9

O3 Mini

8.7

Rank #42/63 · confidence 1 · eval date 2025-01-31

Multilingualverified

BenchLM Multilingual score

SourceClaude Opus 4.6

Claude Opus 4.6

winner

100.0

Rank #1/50 · confidence 4 · eval date 2026-02-01

+55.2

O3 Mini

44.8

Rank #35/50 · confidence 1 · eval date 2025-01-31

Multimodalverified

BenchLM Multimodal Grounded score

SourceClaude Opus 4.6

Claude Opus 4.6

winner

76.7

Rank #15/60 · confidence 4 · eval date 2026-02-01

+11.1

O3 Mini

65.6

Rank #26/60 · confidence 1 · eval date 2025-01-31

Instruction followingverified

BenchLM Instruction Following score

SourceClaude Opus 4.6

Claude Opus 4.6

winner

95.3

Rank #3/56 · confidence 4 · eval date 2026-02-01

+10.0

O3 Mini

85.3

Rank #13/56 · confidence 1 · eval date 2025-01-31

Agentsverified

BenchLM Agentic score

SourceClaude Opus 4.6

Claude Opus 4.6

winner

80.2

Rank #9/69 · confidence 4 · eval date 2026-02-01

+19.6

O3 Mini

60.6

Rank #24/69 · confidence 1 · eval date 2025-01-31

Agentsverified

Tau2-Telecom

SourceClaude Opus 4.6

Claude Opus 4.6

winner

84.8

Rank #22/58 · confidence 4 · eval date 2026-02-01

+56.1

O3 Mini

28.7

Rank #51/58 · confidence 1 · eval date 2025-01-31

API audit comparison

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

Provider	Claude Opus 4.6	O3 Mini
BUZZWinner: Claude Opus 4.6	Claude Opus 4.6 claude-opus-4-6 Audit score 97 View report 10010010088	O3 Mini o3-mini No audit 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	O3 Mini
丸美小沐25 tests	Claude Opus 4.6 speed / latency N/A / N/A input / output No data	O3 Mini speed / latency 66 tok/s / 6491ms input / output No data
Rnglg2 API15 tests	Claude Opus 4.6 speed / latency 57 tok/s / 3926ms input / output No data	O3 Mini speed / latency N/A / N/A input / output No data
N1N10 tests	Claude Opus 4.6 speed / latency 46 tok/s / 2559ms input / output No data	O3 Mini speed / latency 117 tok/s / 4809ms input / output No data
ZetaTechs API6 tests	Claude Opus 4.6 speed / latency N/A / N/A input / output No data	O3 Mini speed / latency 44 tok/s / 17418ms input / output No data
Cuz AI5 tests	Claude Opus 4.6 speed / latency 43 tok/s / 2285ms input / output No data	O3 Mini speed / latency N/A / N/A input / output No data
PoloAPI	Claude Opus 4.6 claude-opus-4-6-c speed / latency No data input / output $0.0082/M / $0.0082/M	O3 Mini o3-mini-medium speed / latency No data input / output $0.151/M / $0.603/M
CHB API	Claude Opus 4.6 claude-opus-4-6 speed / latency No data input / output $0.068/M / $0.342/M	O3 Mini o3-mini-high speed / latency No data input / output $0.021/M / $0.082/M
ZEN-AI VIP	Claude Opus 4.6 claude-opus-4-6-thinking speed / latency No data input / output $0.205/M / $1.03/M	O3 Mini o3-mini-medium speed / latency No data input / output $0.045/M / $0.181/M
KKSJ-AI	Claude Opus 4.6 claude-opus-4-6 speed / latency No data input / output $9.25/M / $46.23/M	O3 Mini o3-mini-2025-01-31 speed / latency No data input / output $0.136/M / $0.542/M

When to choose each model

This report only uses LMSpeed data for Claude Opus 4.6 and O3 Mini: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.

Guidance	Claude Opus 4.6	O3 Mini
When to choose each model	Claude Opus 4.6 Claude Opus 4.6 is stronger when you prioritize Cheapest input price, First-token latency, Free providers, Provider coverage, Recent tests.	O3 Mini O3 Mini is stronger when you prioritize Average speed.

FAQ

TL;DR: Claude Opus 4.6 leads across 122 verifiable data points, including pricing, speed, latency, benchmarks, and provider examples.

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.

Continue from Claude Opus 4.6 vs O3 Mini into nearby model comparisons with enough verified LMSpeed data.

Claude Opus 4.6 vs GPT 5 4claude-opus-4-6-vs-gpt-5-4 Claude Opus 4.6 vs GPT 5claude-opus-4-6-vs-gpt-5 Claude Opus 4.6 vs GPT 5 2claude-opus-4-6-vs-gpt-5-2 Claude Opus 4.6 vs Qwen3claude-opus-4-6-vs-qwen3

Data as of Jul 3, 2026, 02:14 PMRankings are based on community-submitted tests and periodic health probes. Advisory only, not official data.

Model compare

Claude Opus 4.6 vs O3 Mini

claude-opus-4-6-vs-o3-mini

Model A

Claude Opus 4.6

Model B

O3 Mini

Overall leader

Leading

Contender

Verified metric wins

5 wins

1 wins

Where it leads

Cheapest input price, First-token latency, Free providers, Provider coverage, Recent tests

Average speed

Model metadata

Claude Opus 4.6 exposes 1M tokens; notable signals: Text input, Image input, File input, Text output.

O3 Mini exposes 200K tokens; notable signals: Text input, File input, Text output, Tool calling.

Developer

Anthropic

OpenAI

Context window

1M tokens

200K tokens

Max output

128K tokens

100K tokens

Released

Feb 2026

Feb 2025

Modalities

Input

TextImageFile

Output

Text

Input

TextFile

Output

Text

Features

Text inputImage inputFile inputText outputTool callingStructured outputsJSON modeReasoning

Text inputFile inputText outputTool callingStructured outputsJSON modeReasoning

Parameters

No data

Tokenizer

Claude

GPT

Knowledge cutoff

No data

2023-10-31

OpenRouter ID

anthropic/claude-opus-4.6

openai/o3-mini-high

References

No data

Provider

Claude Opus 4.6

O3 Mini

BUZZWinner: Claude Opus 4.6

Claude Opus 4.6

claude-opus-4-6

Audit score

View report

10010010088

O3 Mini

o3-mini

No audit yet

Provider

Claude Opus 4.6

O3 Mini

丸美小沐25 tests

Claude Opus 4.6

speed / latency

N/A / N/A

input / output

No data

O3 Mini

speed / latency

66 tok/s / 6491ms

input / output

No data

Rnglg2 API15 tests

Claude Opus 4.6

speed / latency

57 tok/s / 3926ms

input / output

No data

O3 Mini

speed / latency

N/A / N/A

input / output

No data

N1N10 tests

Claude Opus 4.6

speed / latency

46 tok/s / 2559ms

input / output

No data

O3 Mini

speed / latency

117 tok/s / 4809ms

input / output

No data

ZetaTechs API6 tests

Claude Opus 4.6

speed / latency

N/A / N/A

input / output

No data

O3 Mini

speed / latency

44 tok/s / 17418ms

input / output

No data

Cuz AI5 tests

Claude Opus 4.6

speed / latency

43 tok/s / 2285ms

input / output

No data

O3 Mini

speed / latency

N/A / N/A

input / output

No data

PoloAPI

Claude Opus 4.6

claude-opus-4-6-c

speed / latency

No data

input / output

$0.0082/M / $0.0082/M

O3 Mini

o3-mini-medium

speed / latency

No data

input / output

$0.151/M / $0.603/M

CHB API

Claude Opus 4.6

claude-opus-4-6

speed / latency

No data

input / output

$0.068/M / $0.342/M

O3 Mini

o3-mini-high

speed / latency

No data

input / output

$0.021/M / $0.082/M

ZEN-AI VIP

Claude Opus 4.6

claude-opus-4-6-thinking

speed / latency

No data

input / output

$0.205/M / $1.03/M

O3 Mini

o3-mini-medium

speed / latency

No data

input / output

$0.045/M / $0.181/M

KKSJ-AI

Claude Opus 4.6

claude-opus-4-6

speed / latency

No data

input / output

$9.25/M / $46.23/M

O3 Mini

o3-mini-2025-01-31

speed / latency

No data

input / output

$0.136/M / $0.542/M

Guidance

Claude Opus 4.6

O3 Mini

When to choose each model

Claude Opus 4.6

Claude Opus 4.6 is stronger when you prioritize Cheapest input price, First-token latency, Free providers, Provider coverage, Recent tests.

O3 Mini

O3 Mini is stronger when you prioritize Average speed.

Key Takeaways

Change comparison

Claude Opus 4.6 vs O3 Mini

Claude Opus 4.6

O3 Mini

Benchmark score comparison

Category performance

Professional benchmark details

BenchLM overall score

Output speed

Time to first answer token

Time to first token

Output price

Blended price

Input price

BenchLM Reasoning score

MMLU-Pro

GPQA

HLE

SWE-bench Verified

Terminal-Bench Hard

AA Coding Index

BenchLM Coding score

AA-SciCode

SciCode

BenchLM Knowledge score

Artificial Analysis Intelligence Index

AA-GPQA Diamond

AA-HLE

BenchLM Multilingual score

BenchLM Multimodal Grounded score

BenchLM Instruction Following score

BenchLM Agentic score

Tau2-Telecom

API audit comparison

Provider examples

When to choose each model

FAQ

Related compare reports

Key Takeaways

Change comparison

Claude Opus 4.6 vs O3 Mini

Claude Opus 4.6

O3 Mini

Benchmark score comparison

Category performance

Professional benchmark details

BenchLM overall score

Output speed

Time to first answer token

Time to first token

Output price

Blended price

Input price

BenchLM Reasoning score

MMLU-Pro

GPQA

HLE

SWE-bench Verified

Terminal-Bench Hard

AA Coding Index

BenchLM Coding score

AA-SciCode

SciCode

BenchLM Knowledge score

Artificial Analysis Intelligence Index

AA-GPQA Diamond

AA-HLE

BenchLM Multilingual score

BenchLM Multimodal Grounded score

BenchLM Instruction Following score

BenchLM Agentic score

Tau2-Telecom

API audit comparison

Provider examples

When to choose each model

FAQ

Related compare reports