Pairwise benchmark snapshot · Aug 16, 2026

Claude 3.5 Haiku vs Claude Opus 5 benchmark

Name: Claude 3.5 Haiku vs Claude Opus 5 AI benchmark comparison
Creator: CompareLLM
License: https://creativecommons.org/licenses/by/4.0/

This page compares Claude 3.5 Haiku (Anthropic) and Claude Opus 5 (Anthropic) using the latest snapshots we have as of Aug 16, 2026. On preference Elo, Claude Opus 5 is ahead by 400 points (1,624 vs 1,224; seed-bootstrap (Aug 16, 2026)). On SWE-bench coding, Claude Opus 5 resolves 79.2% versus 36.2% (seed-bootstrap (Aug 16, 2026)). Claude 3.5 Haiku streams faster (140 tok/s) while Claude 3.5 Haiku is the cheaper output token ($4/1M). Claude Opus 5 has the larger context window (1M tokens). Every cell below is a dated snapshot from a named public source — we do not invent missing scores, and we do not run SWE-bench ourselves.

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Anthropic

Claude 3.5 Haiku

Previous cheap Claude. Haiku 4.5 is the current $1/$5 SKU.

Elo 1,224$4/1M out

Anthropic

Claude Opus 5

Anthropic current default flagship. Official API $5/$25 per 1M tokens and a 1M context window (Anthropic, Jul 24 2026).

Elo 1,624$50/1M out

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Model A

Model B

Quick vs:vs Claude Opus 4.5 vs Claude Opus 4.6 vs Claude Sonnet 4.5 vs Claude 3.7 Sonnet

Interactive Comparison Diagram

Matchup Breakdown

Tug-of-War Matchup Matrix

Category wins across intelligence, speed, and pricing efficiency.

Claude 3.5 Haiku (4)vsClaude Opus 5 (6)

Claude 3.5 Haiku: 4W (40%)Overall: Claude Opus 5Claude Opus 5: 6W (60%)

← Claude 3.5 HaikuClaude Opus 5 →

Claude Opus 5 (5/5)

Intelligence & Reasoning

Preference Elo, Coding proficiency, SWE-bench & LiveBench accuracy

Preference Elo

1,224vs1,624

Coding Elo

—vs1,618

SWE-bench

36.2%vs79.2%

LiveBench

44.8%vs74.8%

GPQA Diamond

54.1%vs87.1%

Claude 3.5 Haiku: 0WClaude Opus 5: 5W

Claude 3.5 Haiku (2/2)

Speed & Latency

Generation throughput and time to first token responsiveness

Output speed

140 tok/svs72 tok/s

Time to first token

110 msvs310 ms

Claude 3.5 Haiku: 2WClaude Opus 5: 0W

Claude 3.5 Haiku (2/3)

Pricing & Capacity

Cost per million tokens and max context window length

Output price

$4/1Mvs$50/1M

Input price

$0.8/1Mvs$10/1M

Context window

200kvs1M

Claude 3.5 Haiku: 2WClaude Opus 5: 1W

Capability Matchup Radar

Multi-Dimensional Capability Radar

Each spoke is a skill. Farther from the center is better (0–100th percentile). Tap any dot to inspect details.

Tap any node to inspect

Percentile 0–100

Dimensional AdvantageClaude Opus 5 4/6

Preference Elo

Claude Opus 5

400 pts advantage

Throughput Speed

Claude 3.5 Haiku

68 tok/s faster

Price Efficiency

Claude 3.5 Haiku

$46.00/1M cheaper

Full Benchmark Score Matrix

—

Elo

High is better

1,224

EloHigh is better

1,624+33%

Code Elo

High is better

—

Code EloHigh is better

1,618

LiveBench

High is better

44.8%

LiveBenchHigh is better

74.8%+67%

SWE-bench

High is better

36.2%

SWE-benchHigh is better

79.2%+119%

GPQA

High is better

54.1%

GPQAHigh is better

87.1%+61%

TTFT

Low is better

+182%110 ms

TTFTLow is better

310 ms

Speed

High is better

+94%140 tok/s

SpeedHigh is better

72 tok/s

In $

Low is better

+1150%$0.8/1M

In $Low is better

$10/1M

Out $

Low is better

+1150%$4/1M

Out $Low is better

$50/1M

Context

High is better

200k

ContextHigh is better

1M+400%

Interactive Simulator

Workload Cost & Savings Calculator

Simulate monthly production API costs based on published $/1M tokens.

Save up to 92% with Claude 3.5 Haiku

Monthly Volume50M tokens/mo

Quick Presets:

Token Ratio (In vs Out)70% In / 30% Out

RAG / Search (10% out)Coding / Chat (50% out)

Claude 3.5 Haiku$88.00 / mo

In: $28.00Out: $60.00

Claude Opus 5$1,100.00 / mo

In: $350.00Out: $750.00

Estimated Cost Delta

Claude 3.5 Haiku is estimated to save $1,012.00/month ($12,144/year).

Based on 50M tokens (30% gen)

Key Selection Recommendations

1
Claude Opus 5:Pick Claude Opus 5 when repo-level coding accuracy is the constraint.
2
Claude 3.5 Haiku:Pick Claude 3.5 Haiku when you are optimizing output cost.
3
Claude 3.5 Haiku:Pick Claude 3.5 Haiku when time-to-first-token matters more than peak Elo.

Recommended Workload Routing

Repo / coding agentsClaude Opus 5

Higher SWE-bench (79.2%).

High-volume chatClaude 3.5 Haiku

Lower output list price ($4/1M).

Voice / low-latency UIClaude 3.5 Haiku

Lower TTFT (110 ms).

Long-document RAGClaude Opus 5

Larger window (1M).

Screenshots / visionClaude Opus 5

Both accept images. Defaulting to the higher-Elo side (Claude Opus 5).

Target Workload	Recommended Pick	Evaluation Rationale
Repo / coding agents	Claude Opus 5	Higher SWE-bench (79.2%).
High-volume chat	Claude 3.5 Haiku	Lower output list price ($4/1M).
Voice / low-latency UI	Claude 3.5 Haiku	Lower TTFT (110 ms).
Long-document RAG	Claude Opus 5	Larger window (1M).
Screenshots / vision	Claude Opus 5	Both accept images. Defaulting to the higher-Elo side (Claude Opus 5).

Related Editorial Dispatches & Benchmark Notes

View all news

compareAug 10, 2026

Sonnet vs Opus in 2026: same family, different invoice

Usually Sonnet 5 vs Opus 5. Coding delta versus output $/1M. The workhorse question.

compareJul 24, 2026

Claude vs Gemini: coding, Elo, and output price — not a brand mashup

Top Anthropic vs top Google. Usually Opus 5 vs 3.6 Pro. Two different invoices.

compareJul 24, 2026

Claude vs GPT benchmark: this hub always remaps to the current Elo leaders

Not a frozen 2025 article. Today that is usually Opus 5 vs GPT-5.6 Sol. Dated cells, not a brand fight.

launchJul 24, 2026

Claude Opus 5 is Anthropic’s default flagship — how to read it on CompareLLM

Jul 24 2026 official API at $5/$25 and a 1M window. Preference Elo is taste, not a coding exam.

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LIVE

Anthropic

Claude 3.5 Haiku

Elo 1,224

LiveBench44.8%

SWE-bench36.2%

Speed140 tok/s

Output cost$4/1M

Anthropic

Claude Opus 5

Elo 1,624

LiveBench74.8%

SWE-bench79.2%

Speed72 tok/s

Output cost$50/1M

Frequently Asked Questions

Which is better overall, Claude 3.5 Haiku or Claude Opus 5?: Claude Opus 5 has the higher preference Elo in our latest snapshot (1,624). “Better” still depends on coding, price, and latency — see the table.
Which is better at coding, Claude 3.5 Haiku or Claude Opus 5?: Claude Opus 5 leads SWE-bench at 79.2% vs 36.2%. SWE-bench is one harness, not your repo.
Which is cheaper to run in production?: Claude 3.5 Haiku output tokens are $4/1M versus $50/1M. Input prices and retry rates still move the real bill.
Which is faster, Claude 3.5 Haiku or Claude Opus 5?: Claude 3.5 Haiku has the lower time-to-first-token (110 ms vs 310 ms). Tokens/sec is a separate column if you care about long completions.
Which has the larger context window?: Claude Opus 5 accepts 1M tokens versus 200k.
Can I self-host either model?: Neither model is marked open-weights here. You are comparing hosted APIs.
Are these scores from CompareLLM’s own evals?: No. V1 aggregates public leaderboards (and optional first-party latency pings). Each cell names its source and date. Read /methodology.
What does preference Elo mean on this page?: Preference Elo is a crowd vote from LMArena / Arena. People see two hidden answers and pick the one they like more. The model that wins more often gets a higher Elo. That means people preferred it — not that it passed a school test. It is not SWE-bench, not accuracy, and not a number we invent. Claude 3.5 Haiku and Claude Opus 5 Elo cells are dated snapshots from the named source — we do not compute Arena ourselves.

Similar Head-to-Head Comparisons

All Claude 3.5 Haiku matchups →|All Claude Opus 5 matchups →

Claude 3.5 Haiku vs Claude Haiku 4.5 (next haiku)Claude Opus 5 vs Claude Opus 4.8 (previous opus)Claude Opus 4.5 vs Claude Opus 5 Claude Opus 4.6 vs Claude Opus 5 Claude Sonnet 4.5 vs Claude Opus 5 Claude Fable 5 vs Claude Opus 5

Claude 3.5 Haiku vs Claude Opus 5 benchmark

Interactive Comparison Diagram

Matchup Breakdown

Tug-of-War Matchup Matrix

Category wins across intelligence, speed, and pricing efficiency.

Claude 3.5 Haiku (4)vsClaude Opus 5 (6)

Claude 3.5 Haiku: 4W (40%)Overall: Claude Opus 5Claude Opus 5: 6W (60%)

← Claude 3.5 HaikuClaude Opus 5 →

Claude Opus 5 (5/5)

Intelligence & Reasoning

Preference Elo, Coding proficiency, SWE-bench & LiveBench accuracy

Preference Elo

1,224vs1,624

Coding Elo

—vs1,618

SWE-bench

36.2%vs79.2%

LiveBench

44.8%vs74.8%

GPQA Diamond

54.1%vs87.1%

Claude 3.5 Haiku: 0WClaude Opus 5: 5W

Claude 3.5 Haiku (2/2)

Speed & Latency

Generation throughput and time to first token responsiveness

Output speed

140 tok/svs72 tok/s

Time to first token

110 msvs310 ms

Claude 3.5 Haiku: 2WClaude Opus 5: 0W

Claude 3.5 Haiku (2/3)

Pricing & Capacity

Cost per million tokens and max context window length

Output price

$4/1Mvs$50/1M

Input price

$0.8/1Mvs$10/1M

Context window

200kvs1M

Claude 3.5 Haiku: 2WClaude Opus 5: 1W

Recommended Workload Routing

Repo / coding agentsClaude Opus 5

Higher SWE-bench (79.2%).

High-volume chatClaude 3.5 Haiku

Lower output list price ($4/1M).

Voice / low-latency UIClaude 3.5 Haiku

Lower TTFT (110 ms).

Long-document RAGClaude Opus 5

Larger window (1M).

Screenshots / visionClaude Opus 5

Both accept images. Defaulting to the higher-Elo side (Claude Opus 5).

Target Workload	Recommended Pick	Evaluation Rationale
Repo / coding agents	Claude Opus 5	Higher SWE-bench (79.2%).
High-volume chat	Claude 3.5 Haiku	Lower output list price ($4/1M).
Voice / low-latency UI	Claude 3.5 Haiku	Lower TTFT (110 ms).
Long-document RAG	Claude Opus 5	Larger window (1M).
Screenshots / vision	Claude Opus 5	Both accept images. Defaulting to the higher-Elo side (Claude Opus 5).

Frequently Asked Questions

Which is better overall, Claude 3.5 Haiku or Claude Opus 5?

Claude Opus 5 has the higher preference Elo in our latest snapshot (1,624). “Better” still depends on coding, price, and latency — see the table.

Which is better at coding, Claude 3.5 Haiku or Claude Opus 5?

Claude Opus 5 leads SWE-bench at 79.2% vs 36.2%. SWE-bench is one harness, not your repo.

Which is cheaper to run in production?

Claude 3.5 Haiku output tokens are $4/1M versus $50/1M. Input prices and retry rates still move the real bill.

Which is faster, Claude 3.5 Haiku or Claude Opus 5?

Claude 3.5 Haiku has the lower time-to-first-token (110 ms vs 310 ms). Tokens/sec is a separate column if you care about long completions.

Which has the larger context window?

Claude Opus 5 accepts 1M tokens versus 200k.

Can I self-host either model?

Neither model is marked open-weights here. You are comparing hosted APIs.

Are these scores from CompareLLM’s own evals?

No. V1 aggregates public leaderboards (and optional first-party latency pings). Each cell names its source and date. Read /methodology.

What does preference Elo mean on this page?

Preference Elo is a crowd vote from LMArena / Arena. People see two hidden answers and pick the one they like more. The model that wins more often gets a higher Elo. That means people preferred it — not that it passed a school test. It is not SWE-bench, not accuracy, and not a number we invent. Claude 3.5 Haiku and Claude Opus 5 Elo cells are dated snapshots from the named source — we do not compute Arena ourselves.

Swap or Add Any Model to this Matchup

Interactive Comparison Diagram

Tug-of-War Matchup Matrix

Intelligence & Reasoning

Speed & Latency

Pricing & Capacity

Multi-Dimensional Capability Radar

Claude Opus 5

Claude 3.5 Haiku

Claude 3.5 Haiku

Full Benchmark Score Matrix

Workload Cost & Savings Calculator

Key Selection Recommendations

Recommended Workload Routing

Related Editorial Dispatches & Benchmark Notes

Sonnet vs Opus in 2026: same family, different invoice

Claude vs Gemini: coding, Elo, and output price — not a brand mashup

Claude vs GPT benchmark: this hub always remaps to the current Elo leaders

Claude Opus 5 is Anthropic’s default flagship — how to read it on CompareLLM

Cast Your Matchup Vote

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CompareLLM Matrix

Claude 3.5 Haiku

Claude Opus 5

Frequently Asked Questions

Related news

Similar Head-to-Head Comparisons

Swap or Add Any Model to this Matchup

Interactive Comparison Diagram

Tug-of-War Matchup Matrix

Intelligence & Reasoning

Speed & Latency

Pricing & Capacity

Multi-Dimensional Capability Radar

Claude Opus 5

Claude 3.5 Haiku

Claude 3.5 Haiku

Full Benchmark Score Matrix

Workload Cost & Savings Calculator

Key Selection Recommendations

Recommended Workload Routing

Related Editorial Dispatches & Benchmark Notes

Sonnet vs Opus in 2026: same family, different invoice

Claude vs Gemini: coding, Elo, and output price — not a brand mashup

Claude vs GPT benchmark: this hub always remaps to the current Elo leaders

Claude Opus 5 is Anthropic’s default flagship — how to read it on CompareLLM

Cast Your Matchup Vote

Community Discussions (0)

Share card

CompareLLM Matrix

Claude 3.5 Haiku

Claude Opus 5

Frequently Asked Questions

Related news

Similar Head-to-Head Comparisons