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Model compare

Claude Opus 4.6 vs O3 Mini

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

Model A

Claude Opus 4.6

Anthropic

Leading
vs

Model B

O3 Mini

OpenAI

Contender

Key Takeaways

Weighted outcome: Claude Opus 4.6. Benchmark capability categories carry 80%, while price, API performance, and availability carry 20%.

Decision read

Claude Opus 4.6

Claude Opus 4.6 has the higher weighted result; Model A / B score 65.3 to 34.7.

Evidence depth

97 data points

Includes 16 benchmark rows, 0 audit samples, and 7 provider examples.

Selection signal

Start with Claude Opus 4.6

The charts below split 23 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 O3 Mini: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.

Model compare
Claude Opus 4.6
O3 Mini
Overall leaderLeadingContender
Weighted overall score65.3 pts34.7 pts
Benchmark category leads4 categories2 categories
Operational advantagesCheapest input price, First-token latency, Provider coverageAverage speed, Free providers
Context window1M tokens200K tokens
Max output128K tokens100K tokens
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

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
O3 Mini
DeveloperAnthropicOpenAI
ReleasedFeb 2026Feb 2025
ParametersNo dataNo data
TokenizerClaudeGPT
Knowledge cutoffNo data2023-10-31
OpenRouter IDanthropic/claude-opus-4.6openai/o3-mini
ReferencesNo dataNo data

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.

Claude Opus 4.6

Claude Opus 4.6 is stronger in benchmark categories (Agents, Coding, Reasoning, Knowledge) and operational dimensions (Cheapest input price, First-token latency, Provider coverage).

O3 Mini

O3 Mini is stronger in benchmark categories (Math, Instruction following) and operational dimensions (Average speed, Free providers).

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
6 / 8
Shared
6 shared categories

Avg. score

Claude Opus 4.6

53.1

Avg. score

O3 Mini

48.6

Agents

Claude Opus 4.6 leads by 15.2

Claude Opus 4.654.9
O3 Mini39.7

Coding

Claude Opus 4.6 leads by 18.5

Claude Opus 4.659
O3 Mini40.5

Reasoning

Claude Opus 4.6 leads by 4.0

Claude Opus 4.653.4
O3 Mini49.4

Knowledge

Claude Opus 4.6 leads by 5.9

Claude Opus 4.653.7
O3 Mini47.8

Math

O3 Mini leads by 2.0

Claude Opus 4.656.5
O3 Mini58.5

Multilingual

Claude Opus 4.6

Claude Opus 4.654
O3 Mini-

Multimodal

Claude Opus 4.6

Claude Opus 4.648.4
O3 Mini-

Instruction following

O3 Mini leads by 10.9

Claude Opus 4.644.7
O3 Mini55.6

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

winner

67.0

Rank #24/100 · confidence 3 · eval date 2026-02-01

+16.0

O3 Mini

51.0

Rank #70/100 · confidence 1 · eval date 2025-01-31

Pricingverified

Blended price

SourceClaude Opus 4.6 (Non-reasoning, High Effort)

Claude Opus 4.6

$10.00/M

Rank #162/178 · confidence 4

+$8.07/M

O3 Mini

winner

$1.93/M

Rank #110/178 · confidence 4

Pricingverified

Output price

SourceClaude Opus 4.6 (Non-reasoning, High Effort)

Claude Opus 4.6

$25.00/M

Rank #162/178 · confidence 4

+$20.60/M

O3 Mini

winner

$4.40/M

Rank #111/178 · confidence 4

Pricingverified

Input price

SourceClaude Opus 4.6 (Non-reasoning, High Effort)

Claude Opus 4.6

$5.00/M

Rank #161/178 · confidence 4

+$3.90/M

O3 Mini

winner

$1.10/M

Rank #112/178 · confidence 4

Reasoningreported

MMLU-Pro

SourceClaude Opus 4.6

Claude Opus 4.6

winner

82.0%

Rank #50/128 · confidence 3 · eval date 2026-02-01

+2.9%

O3 Mini

79.1%

Rank #70/128 · confidence 4

Reasoningverified

GPQA

SourceClaude Opus 4.6 (Non-reasoning, High Effort)

Claude Opus 4.6

winner

84.0%

Rank #68/209 · confidence 4

+9.2%

O3 Mini

74.8%

Rank #115/209 · confidence 4

Reasoningverified

HLE

SourceClaude Opus 4.6 (Non-reasoning, High Effort)

Claude Opus 4.6

winner

19.1%

Rank #81/207 · confidence 4

+11.2%

O3 Mini

7.9%

Rank #126/207 · confidence 4

Codingreported

SWE-bench Verified

SourceClaude Opus 4.6

Claude Opus 4.6

winner

80.8

Rank #8/49 · confidence 3 · eval date 2026-02-01

+31.5

O3 Mini

49.3

Rank #46/49 · confidence 1 · eval date 2025-01-31

Codingreported

BenchLM Coding score

SourceClaude Opus 4.6

Claude Opus 4.6

winner

63.3

Rank #10/80 · confidence 3 · eval date 2026-02-01

+42.3

O3 Mini

21.0

Rank #78/80 · 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 #43/202 · confidence 4

+5.8%

O3 Mini

39.9%

Rank #83/202 · confidence 4

Codingreported

AA-SciCode

SourceClaude Opus 4.6

Claude Opus 4.6

winner

45.7

Rank #47/108 · confidence 3 · eval date 2026-02-01

+5.8

O3 Mini

39.9

Rank #70/108 · confidence 1 · eval date 2025-01-31

Knowledgereported

BenchLM Knowledge score

SourceClaude Opus 4.6

Claude Opus 4.6

winner

82.7

Rank #10/69 · confidence 3 · eval date 2026-02-01

+17.0

O3 Mini

65.7

Rank #40/69 · confidence 1 · eval date 2025-01-31

Knowledgereported

Artificial Analysis Intelligence Index

SourceClaude Opus 4.6

Claude Opus 4.6

winner

38.8

Rank #48/111 · confidence 3 · eval date 2026-02-01

+19.6

O3 Mini

19.2

Rank #87/111 · confidence 1 · eval date 2025-01-31

Knowledgereported

AA-GPQA Diamond

SourceClaude Opus 4.6

Claude Opus 4.6

winner

84.0

Rank #62/108 · confidence 3 · eval date 2026-02-01

+9.2

O3 Mini

74.8

Rank #82/108 · confidence 1 · eval date 2025-01-31

Knowledgereported

AA-HLE

SourceClaude Opus 4.6

Claude Opus 4.6

winner

19.1

Rank #68/108 · confidence 3 · eval date 2026-02-01

+11.2

O3 Mini

7.9

Rank #83/108 · confidence 1 · eval date 2025-01-31

Agentsreported

τ²-bench results

SourceClaude Opus 4.6

Claude Opus 4.6

winner

84.8

Rank #46/82 · confidence 3 · eval date 2026-02-01

+56.1

O3 Mini

28.7

Rank #72/82 · 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
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
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

兔子API

Claude Opus 4.6

claude-opus-4-6

speed / latency

No data

input / output

$0/request

O3 Mini

o3-mini-high

speed / latency

No data

input / output

$1.47/request

PoloAPI

Claude Opus 4.6

claude-opus-4-6-c

speed / latency

No data

input / output

$0.0082/request

O3 Mini

o3-mini

speed / latency

No data

input / output

$1.02/M/$4.10/M

FAQ

Weighted outcome: Claude Opus 4.6. 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.