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Claude Haiku 4.5 vs Claude Opus 4.6

The readout for Claude Haiku 4.5 and Claude Opus 4.6, before the detailed comparison sheet.

Model A

Claude Haiku 4.5

Anthropic

Contender
vs

Model B

Claude Opus 4.6

Anthropic

Leading

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 12 to 88.

Evidence depth

92 data points

Includes 14 benchmark rows, 0 audit samples, and 10 provider examples.

Selection signal

Start with Claude Opus 4.6

The charts below split 24 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 Haiku 4.5 and Claude Opus 4.6: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.

Model compare
Claude Haiku 4.5
Claude Opus 4.6
Overall leaderContenderLeading
Weighted overall score12.0 pts88.0 pts
Benchmark category leads0 categories4 categories
Operational advantagesCheapest input price, Average speed, First-token latencyFree providers, Provider coverage
Context window200K tokens1M tokens
Max output64K tokens128K tokens
Modalities

Input

TextImageFile

Output

Text

Input

TextImageFile

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 Haiku 4.5
Claude Opus 4.6
DeveloperAnthropicAnthropic
ReleasedOct 2025Feb 2026
ParametersNo dataNo data
TokenizerClaudeClaude
Knowledge cutoffNo dataNo data
OpenRouter IDanthropic/claude-haiku-4.5anthropic/claude-opus-4.6
ReferencesNo dataNo data

When to choose each model

This report only uses LMSpeed data for Claude Haiku 4.5 and Claude Opus 4.6: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.

Claude Haiku 4.5

Claude Haiku 4.5 has these operational advantages: Cheapest input price, Average speed, First-token latency.

Claude Opus 4.6

Claude Opus 4.6 is stronger in benchmark categories (Agents, Coding, Reasoning, Math) and operational dimensions (Free providers, Provider coverage).

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
4 / 8
Model B coverage
8 / 8
Shared
4 shared categories

Avg. score

Claude Haiku 4.5

45.6

Avg. score

Claude Opus 4.6

51.8

Agents

Claude Opus 4.6 leads by 11.3

Claude Haiku 4.543
Claude Opus 4.654.3

Coding

Claude Opus 4.6 leads by 9.9

Claude Haiku 4.546.7
Claude Opus 4.656.6

Reasoning

Claude Opus 4.6 leads by 6.0

Claude Haiku 4.547.4
Claude Opus 4.653.4

Knowledge

Claude Opus 4.6

Claude Haiku 4.5-
Claude Opus 4.653.3

Math

Claude Opus 4.6 leads by 10.3

Claude Haiku 4.545.4
Claude Opus 4.655.7

Multilingual

Claude Opus 4.6

Claude Haiku 4.5-
Claude Opus 4.648.4

Multimodal

Claude Opus 4.6

Claude Haiku 4.5-
Claude Opus 4.647.8

Instruction following

Claude Opus 4.6

Claude Haiku 4.5-
Claude Opus 4.644.8

Professional benchmark details

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

Aggregatereported

BenchLM overall score

SourceClaude Haiku 4.5

Claude Haiku 4.5

55.0

Rank #66/111 · confidence 1 · eval date 2025-10-15

+7.0

Claude Opus 4.6

winner

62.0

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

Pricingverified

Input price

SourceClaude 4.5 Haiku (Non-reasoning)

Claude Haiku 4.5

winner

$1.00/M

Rank #113/186 · confidence 4

+$4.00/M

Claude Opus 4.6

$5.00/M

Rank #168/186 · confidence 4

Pricingverified

Blended price

SourceClaude 4.5 Haiku (Non-reasoning)

Claude Haiku 4.5

winner

$2.00/M

Rank #121/186 · confidence 4

+$8.00/M

Claude Opus 4.6

$10.00/M

Rank #169/186 · confidence 4

Pricingverified

Output price

SourceClaude 4.5 Haiku (Non-reasoning)

Claude Haiku 4.5

winner

$5.00/M

Rank #127/186 · confidence 4

+$20.00/M

Claude Opus 4.6

$25.00/M

Rank #169/186 · confidence 4

Reasoningverified

MMLU-Pro

SourceClaude 4.5 Haiku (Non-reasoning)

Claude Haiku 4.5

80.0%

Rank #63/129 · confidence 4

+2.0%

Claude Opus 4.6

winner

82.0%

Rank #50/129 · confidence 4 · eval date 2026-02-01

Reasoningverified

GPQA

SourceClaude 4.5 Haiku (Non-reasoning)

Claude Haiku 4.5

64.6%

Rank #158/218 · confidence 4

+19.4%

Claude Opus 4.6

winner

84.0%

Rank #75/218 · confidence 4

Reasoningverified

HLE

SourceClaude 4.5 Haiku (Non-reasoning)

Claude Haiku 4.5

4.2%

Rank #177/216 · confidence 4

+14.9%

Claude Opus 4.6

winner

19.1%

Rank #89/216 · confidence 4

Codingreported

SWE-bench Verified

SourceClaude Haiku 4.5

Claude Haiku 4.5

73.3

Rank #38/49 · confidence 1 · eval date 2025-10-15

+7.5

Claude Opus 4.6

winner

80.8

Rank #8/49 · confidence 4 · eval date 2026-02-01

Codingreported

BenchLM Coding score

SourceClaude Haiku 4.5

Claude Haiku 4.5

winner

54.2

Rank #41/87 · confidence 1 · eval date 2025-10-15

+3.9

Claude Opus 4.6

50.3

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

Mathreported

FrontierMath v2 (Tiers 1-3)

SourceClaude Haiku 4.5

Claude Haiku 4.5

5.9

Rank #36/47 · confidence 1 · eval date 2025-10-15

+34.8

Claude Opus 4.6

winner

40.7

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

Mathreported

FrontierMath v2 (Tier 4)

SourceClaude Haiku 4.5

Claude Haiku 4.5

2.1

Rank #33/36 · confidence 1 · eval date 2025-10-15

+20.8

Claude Opus 4.6

winner

22.9

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

Mathreported

BenchLM Math score

SourceClaude Haiku 4.5

Claude Haiku 4.5

29.0

Rank #50/63 · confidence 1 · eval date 2025-10-15

+29.6

Claude Opus 4.6

winner

58.6

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

Multimodalreported

Design Arena Website

SourceClaude Haiku 4.5

Claude Haiku 4.5

1133.0

Rank #65/78 · confidence 1 · eval date 2025-10-15

+173.0

Claude Opus 4.6

winner

1306.0

Rank #14/78 · confidence 4 · eval date 2026-02-01

Agentsreported

JobBench

SourceClaude Haiku 4.5

Claude Haiku 4.5

16.0

Rank #20/24 · confidence 1 · eval date 2025-10-15

+20.7

Claude Opus 4.6

winner

36.7

Rank #9/24 · confidence 4 · eval date 2026-02-01

API audit comparison

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

Provider
Claude Haiku 4.5
Claude Opus 4.6
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 Haiku 4.5
Claude Opus 4.6
OptAI25 tests

Claude Haiku 4.5

speed / latency

N/A / N/A

input / output

No data

Claude Opus 4.6

speed / latency

43 tok/s / 2542ms

input / output

No data

Kunkunout API20 tests

Claude Haiku 4.5

speed / latency

N/A / N/A

input / output

No data

Claude Opus 4.6

speed / latency

40 tok/s / 16141ms

input / output

No data

N1N20 tests

Claude Haiku 4.5

speed / latency

112 tok/s / 1733ms

input / output

No data

Claude Opus 4.6

speed / latency

46 tok/s / 2559ms

input / output

No data

Rnglg2 API20 tests

Claude Haiku 4.5

speed / latency

160 tok/s / 2639ms

input / output

No data

Claude Opus 4.6

speed / latency

57 tok/s / 3926ms

input / output

No data

钠 API20 tests

Claude Haiku 4.5

speed / latency

N/A / N/A

input / output

No data

Claude Opus 4.6

speed / latency

42 tok/s / 2282ms

input / output

No data

兔子API

Claude Haiku 4.5

claude-haiku-4-5

speed / latency

No data

input / output

$0/request

Claude Opus 4.6

claude-opus-4-6-high

speed / latency

No data

input / output

$0/request

我不是AI神

Claude Haiku 4.5

claude-haiku-4-5-20251001

speed / latency

No data

input / output

$0/M/$0/M

Claude Opus 4.6

claude-opus-4-6

speed / latency

No data

input / output

$0/M/$0/M

Omini Api

Claude Haiku 4.5

claude-haiku-4-5-20251001

speed / latency

No data

input / output

$0.0019/M/$0.0096/M

Claude Opus 4.6

claude-opus-4-6

speed / latency

No data

input / output

$0.068/M/$0.342/M

全球AI

Claude Haiku 4.5

claude-haiku-4-5-20251001-c

speed / latency

No data

input / output

$0.010/request

Claude Opus 4.6

claude-opus-4-6-thinking-c

speed / latency

No data

input / output

$0.257/request

熊猫 API

Claude Haiku 4.5

熊猫-按量-特供顶级-官方正向满血-claude-haiku-4.5

speed / latency

No data

input / output

$0.011/M/$0.055/M

Claude Opus 4.6

熊猫-特供-按量-满血逆-claude-opus-4-6

speed / latency

No data

input / output

$0.015/M/$0.076/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.