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© 2026 CompareLLM. Public benchmark data aggregated from Arena Elo, LiveBench, SWE-bench & OpenRouter.

Every score has a dated snapshot.

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  3. Anthropic Claude Haiku Latest vs Claude Sonnet 4.5

Pairwise benchmark snapshot · Aug 17, 2026noindex (thin pair)

Anthropic Claude Haiku Latest vs Claude Sonnet 4.5 benchmark

In this head-to-head showdown, Anthropic Claude Haiku Latest is more budget-friendly at $5/1M per 1M output tokens. Review the complete breakdown below to determine which model best fits your performance and budget requirements.

Executive Comparison Verdict

Bottom Line: Both Anthropic Claude Haiku Latest and Claude Sonnet 4.5 present distinct architectural strengths. Compare the verified benchmark matrix below to choose the model tailored to your specific application requirements.
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Executive Verdict Summary

Anthropic Claude Haiku Latest holds empirical advantage (2 of 3 metrics)

Coding / SWESWE-bench
Claude Sonnet 4.5Top code solve rate
ReasoningGPQA / Live
Claude Sonnet 4.5Top logical accuracy
Best Value$/1M Tok
Anthropic Claude Haiku LatestLowest API billing cost
Speed / TokTok/Sec
Claude Sonnet 4.5Fastest stream rate

Verified Advantage Breakdown

3 benchmarks evaluated across capability, speed, and cost

Anthropic Claude Haiku Latest (2)Claude Sonnet 4.5 (1)
Anthropic Claude Haiku Latest
2 of 3 Wins
✓Input price✓Output price
Claude Sonnet 4.5
1 of 3 Wins
✓Context window
~anthropic
Leads 2 of 3
Anthropic Claude Haiku Latest

Auto-discovered from OpenRouter (~anthropic/claude-haiku-latest). Preview until a second source matches.

In: $1 · Out: $5/1M
Anthropic
Leads 1 of 3
Claude Sonnet 4.5

Workhorse Anthropic model: most of Opus coding quality at a mid-tier price.

Sonnet 4.5Elo 1,524In: $3 · Out: $15/1M
Top Rival Showdowns for Anthropic Claude Haiku Latest
All Matchups
Compare vs:vs Claude Opus 4.5vs GPT-5vs Gemini 3 Provs Grok 4.6vs DeepSeek V4 Pro
Preference Leader

No shared data

Single model data

Throughput Leader

No shared data

No latency data

Value per Dollar LeaderAnthropic Claude Haiku Latest Wins

Anthropic Claude Haiku Latest

$5 / 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 standard models across 6 key capability dimensions. Tap any spoke or dot to inspect.

Tap any node to inspect
0–100 %ile

Overall Matchup Breakdown

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

Anthropic Claude Haiku Latest (2)vsClaude Sonnet 4.5 (8)
Anthropic Claude Haiku Latest: 2W (20%)Overall: Claude Sonnet 4.5Claude Sonnet 4.5: 8W (80%)
← Anthropic Claude Haiku LatestClaude Sonnet 4.5 →
🏆Claude Sonnet 4.5 Leads(5/5)

Intelligence & Reasoning

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

Benchmark
Anthropic Claude Haiku LatestvsClaude Sonnet 4.5
Preference Elo
—vs1,524
Coding Elo
—vs1,531
SWE-bench
—vs70.1%
LiveBench
—vs67.4%
GPQA Diamond
—vs80.2%
Anthropic Claude Haiku Latest: 0WClaude Sonnet 4.5: 5W
🏆Claude Sonnet 4.5 Leads(2/2)

Speed & Latency

Generation throughput and time to first token responsiveness

Benchmark
Anthropic Claude Haiku LatestvsClaude Sonnet 4.5
Output speed
—vs88 tok/s
Time to first token
—vs240 ms
Anthropic Claude Haiku Latest: 0WClaude Sonnet 4.5: 2W
🏆Anthropic Claude Haiku Latest Leads(2/3)

Pricing & Capacity

Cost per million tokens and max context window length

Benchmark
Anthropic Claude Haiku LatestvsClaude Sonnet 4.5
Output price
$5/1Mvs$15/1M+$10/1M
Input price
$1/1Mvs$3/1M+$2/1M
Context window
200kvs1M+800k
Anthropic Claude Haiku Latest: 2WClaude Sonnet 4.5: 1W

Side-by-Side Benchmark Matrix

Anthropic Claude Haiku LatestClaude Sonnet 4.5
Preference Elo
Anthropic Claude Haiku Latest—
Claude Sonnet 4.51,524
Coding Elo
Anthropic Claude Haiku Latest—
Claude Sonnet 4.51,531
LiveBench
Anthropic Claude Haiku Latest—
Claude Sonnet 4.567.4%
SWE-bench
Anthropic Claude Haiku Latest—
Claude Sonnet 4.570.1%
GPQA Diamond
Anthropic Claude Haiku Latest—
Claude Sonnet 4.580.2%
Time to first token
Anthropic Claude Haiku Latest—
Claude Sonnet 4.5240 ms
Output speed
Anthropic Claude Haiku Latest—
Claude Sonnet 4.588 tok/s
Input priceAnthropic Claude Haiku Latest +$2/1M
Anthropic Claude Haiku Latest$1/1M
Claude Sonnet 4.5$3/1M
Output priceAnthropic Claude Haiku Latest +$10/1M
Anthropic Claude Haiku Latest$5/1M
Claude Sonnet 4.5$15/1M
Context windowClaude Sonnet 4.5 +800k
Anthropic Claude Haiku Latest200k
Claude Sonnet 4.51M
BenchmarkAnthropic Claude Haiku LatestClaude Sonnet 4.5Advantage Delta
Preference Elo—
1,524
lmarena · Aug 17, 2026
—
Coding Elo—
1,531
lmarena · Aug 17, 2026
—
LiveBench—
67.4%
livebench · Aug 17, 2026
—
SWE-bench—
70.1%
swebench · Aug 17, 2026
—
GPQA Diamond—
80.2%
seed-bootstrap · Aug 1, 2026
—
Time to first token—
240 ms
seed-bootstrap · Aug 1, 2026
—
Output speed—
88 tok/s
seed-bootstrap · Aug 1, 2026
—
Input price
$1/1M
openrouter · Aug 17, 2026
$3/1M
openrouter · Aug 17, 2026
+$2/1M
Output price
$5/1M
openrouter · Aug 17, 2026
$15/1M
openrouter · Aug 17, 2026
+$10/1M
Context window
200k
openrouter · Aug 17, 2026
1M
openrouter · Aug 17, 2026
+800k

Workload Cost & Savings Calculator

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

Save 67% with Anthropic Claude Haiku Latest
Monthly Volume50M tokens/mo
Quick Presets:
Token Ratio (In vs Out)70% In / 30% Out
RAG / Search (10% out)Coding / Chat (50% out)
Anthropic Claude Haiku Latest$110.00 / mo
In: $35Out: $75
Claude Sonnet 4.5$330.00 / mo
In: $105Out: $225
Estimated Cost Delta

Anthropic Claude Haiku Latest is estimated to save $220.00/month ($2,640/year).

Based on 50M tokens (30% gen)

Key Selection Recommendations

  • 1
    Anthropic Claude Haiku Latest:Pick Anthropic Claude Haiku Latest when you are optimizing output cost.
  • 2
    Claude Sonnet 4.5:Pick Claude Sonnet 4.5 for million-token RAG or long-document jobs.

Recommended Workload Routing

Repo / coding agentsinsufficient data

Need SWE-bench on both sides.

High-volume chatAnthropic Claude Haiku Latest

Lower output list price ($5/1M).

Voice / low-latency UIinsufficient data

Need TTFT on both sides.

Long-document RAGClaude Sonnet 4.5

Larger window (1M).

Screenshots / visionClaude Sonnet 4.5

Claude Sonnet 4.5 is the side marked multimodal in the catalog.

Target WorkloadRecommended PickEvaluation Rationale
Repo / coding agentsinsufficient dataNeed SWE-bench on both sides.
High-volume chatAnthropic Claude Haiku LatestLower output list price ($5/1M).
Voice / low-latency UIinsufficient dataNeed TTFT on both sides.
Long-document RAGClaude Sonnet 4.5Larger window (1M).
Screenshots / visionClaude Sonnet 4.5Claude Sonnet 4.5 is the side marked multimodal in the catalog.

Related Editorial Dispatches & Benchmark Notes

View all news
launchFeb 18, 2026

Claude Sonnet 4.5 is the previous workhorse — still a valid vs baseline

Most of Opus 4.5 coding at a mid-tier price. Sonnet 5 replaced it as the buy; 4.5 remains a compare baseline.

Cast Your Matchup Vote

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CompareLLM AI Matrix

Verified Head-to-Head Telemetry

LIVE BENCHMARK
VS
~anthropic

Anthropic Claude Haiku Latest

Elo n/a
SWE-bench—
Speed (tok/s)200k
Input / 1M Tokens$1/1M
Output / 1M Tokens$5/1M
Anthropic

Claude Sonnet 4.5

Elo 1,524
SWE-bench70.1%
Speed (tok/s)88 tok/s
Input / 1M Tokens$3/1M
Output / 1M Tokens$15/1M

Frequently Asked Questions

Which is better overall, Anthropic Claude Haiku Latest or Claude Sonnet 4.5?
We do not have preference Elo for both models, so we do not declare an overall winner. Compare the metrics that exist.
Which is better at coding, Anthropic Claude Haiku Latest or Claude Sonnet 4.5?
SWE-bench is missing for at least one model, so we do not rank coding from a single number.
Which is cheaper to run in production?
Anthropic Claude Haiku Latest output tokens are $5/1M versus $15/1M. Input prices and retry rates still move the real bill.
Which is faster, Anthropic Claude Haiku Latest or Claude Sonnet 4.5?
We do not have TTFT for both models.
Which has the larger context window?
Claude Sonnet 4.5 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. Anthropic Claude Haiku Latest and Claude Sonnet 4.5 Elo cells are dated snapshots from the named source — we do not compute Arena ourselves.

Related news

  • launch · Feb 18, 2026

    Claude Sonnet 4.5 is the previous workhorse — still a valid vs baseline

Similar Head-to-Head Comparisons

All Anthropic Claude Haiku Latest matchups →|All Claude Sonnet 4.5 matchups →
Claude Sonnet 4.5 vs Claude Sonnet 4 (previous sonnet)Claude Sonnet 4.5 vs Claude Sonnet 5 (next sonnet)Claude Opus 4.5 vs Claude Sonnet 4.5Claude Opus 4.6 vs Claude Sonnet 4.5Claude Opus 5 vs Claude Sonnet 4.5Claude Fable 5 vs Claude Sonnet 4.5