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  3. Claude 3.5 Haiku vs Claude Haiku 4.5

Pairwise benchmark snapshot · Aug 16, 2026

Claude 3.5 Haiku vs Claude Haiku 4.5 benchmark

In this head-to-head showdown, Claude Haiku 4.5 delivers higher overall intelligence and human-preferred responses (Elo 1,438 vs 1,224), while Claude Haiku 4.5 leads in SWE-bench software engineering benchmarks (58.2%), while Claude 3.5 Haiku is more budget-friendly at $4/1M per 1M output tokens, while Claude Haiku 4.5 provides faster response streaming (175 tok/s). Review the complete breakdown below to determine which model best fits your performance and budget requirements.

Executive Comparison Verdict

Bottom Line: Choose Claude Haiku 4.5 if your priority is peak reasoning, complex code generation, and top preference Elo. Choose Claude 3.5 Haiku if you are optimizing for low latency, high throughput, and cost-efficient API deployment.
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Verified Head-to-Head Advantage Breakdown

8 direct benchmark disciplines evaluated across capability, speed, and cost

Claude 3.5 Haiku (2)Claude Haiku 4.5 (6)
Claude 3.5 Haiku
2 of 8 Wins
✓Input price✓Output price
Claude Haiku 4.5
6 of 8 Wins
✓Preference Elo✓LiveBench✓SWE-bench✓GPQA Diamond✓Time to first token✓Output speed
Anthropic
Leads 2 of 8 metrics
Claude 3.5 Haiku

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

Elo 1,224$4/1M out
Anthropic
Leads 6 of 8 metrics
Claude Haiku 4.5

Anthropic cheap/fast Claude SKU. Official Claude Platform list price $1/$5 per 1M tokens (Anthropic Haiku page).

Haiku 4.5Elo 1,438$5/1M out
Top Rival Showdowns for Claude 3.5 Haiku
All Matchups
Compare vs:vs GPT-5vs Gemini 3 Provs Grok 4.6vs DeepSeek V4 Provs Qwen 3 Max
Preference LeaderClaude Haiku 4.5 Wins

Claude Haiku 4.5

Δ 214 Arena Elo pts

Throughput LeaderClaude Haiku 4.5 Wins

Claude Haiku 4.5

175 tok/s

Value per Dollar LeaderClaude 3.5 Haiku Wins

Claude 3.5 Haiku

$4 / 1M output

Capability Percentiles

Relative percentile scores computed across all active models in the benchmark catalog.

Multi-Dimensional Capability Radar

Leaders Matchup Capability Radar

Comparing top Western standard models with China's leading frontier rival across 6 skill dimensions. Tap any spoke or dot to inspect.

Tap any node to inspect
Percentile 0–100
Head-to-Head Comparison

Overall Matchup Breakdown

Category wins across reasoning intelligence, generation speed, and token cost.

Claude 3.5 Haiku (2)vsClaude Haiku 4.5 (7)
Claude 3.5 Haiku: 2W (22%)Overall: Claude Haiku 4.5Claude Haiku 4.5: 7W (78%)
← Claude 3.5 Haiku1 tiesClaude Haiku 4.5 →
🏆Claude Haiku 4.5(5/5)

Intelligence & Reasoning

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

Benchmark
Claude 3.5 HaikuvsClaude Haiku 4.5
Preference Elo
1,224vs1,438+214
Coding Elo
—vs1,446
SWE-bench
36.2%vs58.2%+22%
LiveBench
44.8%vs62.4%+17.6%
GPQA Diamond
54.1%vs74%+19.9%
Claude 3.5 Haiku: 0WClaude Haiku 4.5: 5W
🏆Claude Haiku 4.5(2/2)

Speed & Latency

Generation throughput and time to first token responsiveness

Benchmark
Claude 3.5 HaikuvsClaude Haiku 4.5
Output speed
140 tok/svs175 tok/s+35 tok/s
Time to first token
110 msvs95 ms+15 ms
Claude 3.5 Haiku: 0WClaude Haiku 4.5: 2W
🏆Claude 3.5 Haiku(2/3)

Pricing & Capacity

Cost per million tokens and max context window length

Benchmark
Claude 3.5 HaikuvsClaude Haiku 4.5
Output price
$4/1Mvs$5/1M+$1/1M
Input price
$0.8/1Mvs$1/1M+$0.2/1M
Context window
200kvs200k
Claude 3.5 Haiku: 2WClaude Haiku 4.5: 0W

Side-by-Side Benchmark Matrix

Preference Elo+214
Claude 3.5 Haiku1,224
seed-bootstrap · Aug 1, 2026
Claude Haiku 4.51,438
seed-bootstrap · Aug 16, 2026
Coding Elo
Claude 3.5 Haiku—
Claude Haiku 4.51,446
seed-bootstrap · Aug 16, 2026
LiveBench+17.6%
Claude 3.5 Haiku44.8%
seed-bootstrap · Aug 1, 2026
Claude Haiku 4.562.4%
seed-bootstrap · Aug 16, 2026
SWE-bench+22%
Claude 3.5 Haiku36.2%
seed-bootstrap · Aug 1, 2026
Claude Haiku 4.558.2%
seed-bootstrap · Aug 16, 2026
GPQA Diamond+19.9%
Claude 3.5 Haiku54.1%
seed-bootstrap · Aug 1, 2026
Claude Haiku 4.574%
seed-bootstrap · Aug 16, 2026
Time to first token+15 ms
Claude 3.5 Haiku110 ms
seed-bootstrap · Aug 1, 2026
Claude Haiku 4.595 ms
seed-bootstrap · Aug 16, 2026
Output speed+35 tok/s
Claude 3.5 Haiku140 tok/s
seed-bootstrap · Aug 1, 2026
Claude Haiku 4.5175 tok/s
seed-bootstrap · Aug 16, 2026
Input price+$0.2/1M
Claude 3.5 Haiku$0.8/1M
seed-bootstrap · Aug 1, 2026
Claude Haiku 4.5$1/1M
seed-bootstrap · Aug 16, 2026
Output price+$1/1M
Claude 3.5 Haiku$4/1M
seed-bootstrap · Aug 1, 2026
Claude Haiku 4.5$5/1M
seed-bootstrap · Aug 16, 2026
Context window
Claude 3.5 Haiku200k
seed-bootstrap · Aug 1, 2026
Claude Haiku 4.5200k
seed-bootstrap · Aug 16, 2026
BenchmarkClaude 3.5 HaikuClaude Haiku 4.5Advantage Delta
Preference Elo
1,224
seed-bootstrap · Aug 1, 2026
1,438
seed-bootstrap · Aug 16, 2026
+214
Coding Elo—
1,446
seed-bootstrap · Aug 16, 2026
—
LiveBench
44.8%
seed-bootstrap · Aug 1, 2026
62.4%
seed-bootstrap · Aug 16, 2026
+17.6%
SWE-bench
36.2%
seed-bootstrap · Aug 1, 2026
58.2%
seed-bootstrap · Aug 16, 2026
+22%
GPQA Diamond
54.1%
seed-bootstrap · Aug 1, 2026
74%
seed-bootstrap · Aug 16, 2026
+19.9%
Time to first token
110 ms
seed-bootstrap · Aug 1, 2026
95 ms
seed-bootstrap · Aug 16, 2026
+15 ms
Output speed
140 tok/s
seed-bootstrap · Aug 1, 2026
175 tok/s
seed-bootstrap · Aug 16, 2026
+35 tok/s
Input price
$0.8/1M
seed-bootstrap · Aug 1, 2026
$1/1M
seed-bootstrap · Aug 16, 2026
+$0.2/1M
Output price
$4/1M
seed-bootstrap · Aug 1, 2026
$5/1M
seed-bootstrap · Aug 16, 2026
+$1/1M
Context window
200k
seed-bootstrap · Aug 1, 2026
200k
seed-bootstrap · Aug 16, 2026
—
Interactive Simulator (USD)

Workload Cost & Savings Calculator

Simulate monthly production API costs in USD (US Dollar).

Save up to 20% 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: $28Out: $60
Claude Haiku 4.5$110.00 / mo
In: $35Out: $75
Estimated Cost Delta

Claude 3.5 Haiku is estimated to save $22.00/month ($264/year).

Based on 50M tokens (30% gen)

Key Selection Recommendations

  • 1
    Claude Haiku 4.5:Pick Claude Haiku 4.5 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 Haiku 4.5:Pick Claude Haiku 4.5 when time-to-first-token matters more than peak Elo.

Recommended Workload Routing

Repo / coding agentsClaude Haiku 4.5

Higher SWE-bench (58.2%).

High-volume chatClaude 3.5 Haiku

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

Voice / low-latency UIClaude Haiku 4.5

Lower TTFT (95 ms).

Long-document RAGClaude 3.5 Haiku

Larger window (200k).

Screenshots / visionClaude Haiku 4.5

Both accept images. Defaulting to the higher-Elo side (Claude Haiku 4.5).

Target WorkloadRecommended PickEvaluation Rationale
Repo / coding agentsClaude Haiku 4.5Higher SWE-bench (58.2%).
High-volume chatClaude 3.5 HaikuLower output list price ($4/1M).
Voice / low-latency UIClaude Haiku 4.5Lower TTFT (95 ms).
Long-document RAGClaude 3.5 HaikuLarger window (200k).
Screenshots / visionClaude Haiku 4.5Both accept images. Defaulting to the higher-Elo side (Claude Haiku 4.5).

Related Editorial Dispatches & Benchmark Notes

View all news
compareAug 16, 2026

Haiku 4.5 vs Llama 4 Scout: cheap Claude versus cheap open Llama

$1/$5 hosted Claude vs a cheap long-context open sibling. The alternative-to-Sonnet pair that is honest.

launchApr 8, 2026

Llama 4 Scout: long-context open sibling of Maverick

Huge window, cheap hosted lists. The Haiku alternative that is actually open-weight.

launchOct 22, 2025

Claude Haiku 4.5 at $1/$5: the cheap Claude people actually ship

Official Anthropic list $1/$5. This is the SKU behind “cheapest Claude alternative” that is still Claude.

Community Sentiment

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CompareLLM AI Matrix

Verified Head-to-Head Telemetry

LIVE BENCHMARK
VS
Anthropic

Claude 3.5 Haiku

Elo 1,224
SWE-bench36.2%
Speed (tok/s)140 tok/s
Input / 1M Tokens$0.8/1M
Output / 1M Tokens$4/1M
Anthropic

Claude Haiku 4.5

Elo 1,438
SWE-bench58.2%
Speed (tok/s)175 tok/s
Input / 1M Tokens$1/1M
Output / 1M Tokens$5/1M

Frequently Asked Questions

Which is better overall, Claude 3.5 Haiku or Claude Haiku 4.5?
Claude Haiku 4.5 has the higher preference Elo in our latest snapshot (1,438). “Better” still depends on coding, price, and latency — see the table.
Which is better at coding, Claude 3.5 Haiku or Claude Haiku 4.5?
Claude Haiku 4.5 leads SWE-bench at 58.2% 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 $5/1M. Input prices and retry rates still move the real bill.
Which is faster, Claude 3.5 Haiku or Claude Haiku 4.5?
Claude Haiku 4.5 has the lower time-to-first-token (95 ms vs 110 ms). Tokens/sec is a separate column if you care about long completions.
Which has the larger context window?
Claude 3.5 Haiku accepts 200k 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 Haiku 4.5 Elo cells are dated snapshots from the named source — we do not compute Arena ourselves.

Related news

  • compare · Aug 16, 2026

    Haiku 4.5 vs Llama 4 Scout: cheap Claude versus cheap open Llama

  • launch · Apr 8, 2026

    Llama 4 Scout: long-context open sibling of Maverick

  • launch · Oct 22, 2025

    Claude Haiku 4.5 at $1/$5: the cheap Claude people actually ship

Similar Head-to-Head Comparisons

All Claude 3.5 Haiku matchups →|All Claude Haiku 4.5 matchups →
Claude Opus 4.5 vs Claude Haiku 4.5Claude Opus 4.6 vs Claude Haiku 4.5Claude Sonnet 4.5 vs Claude Haiku 4.5Claude Opus 5 vs Claude Haiku 4.5Claude Fable 5 vs Claude Haiku 4.5Claude Opus 4.8 vs Claude Haiku 4.5