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Every score has a dated snapshot.

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  3. Claude Haiku 4.5 vs OpenAI: GPT-5.5 Pro (batch)

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

Claude Haiku 4.5 vs OpenAI: GPT-5.5 Pro (batch) benchmark

In this head-to-head showdown, Claude Haiku 4.5 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 Claude Haiku 4.5 and OpenAI: GPT-5.5 Pro (batch) present distinct architectural strengths. Compare the verified benchmark matrix below to choose the model tailored to your specific application requirements.
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Anthropic
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
OpenAI
OpenAI: GPT-5.5 Pro (batch)

Auto-discovered from OpenRouter (openai/gpt-5.5-pro:batch). Preview until a second source matches.

$90/1M out

Claude 4 Series Family & Variants (5)

Speed, cost, and intelligence tradeoffs across the Anthropic lineup

vs Base Model
Claude Opus 4.5
Anthropic
Base Model
Reasoning
Elo1568
Speed62 t/s
In /1M$5
Out /1M$25
View specs →vs this
Claude Opus 4.6
Anthropic
Opus 4.6
Reasoning
Elo1574
Speed64 t/s
In /1M$5
Out /1M$25
+6 Elo0% price
View specs →vs this
Claude Sonnet 4.5
Anthropic
Sonnet 4.5
Elo1524
Speed88 t/s
In /1M$3
Out /1M$15
-44 Elo-40% price1.4x speed
View specs →vs this
Claude Opus 4.8
Anthropic
Opus 4.8
Reasoning
Elo1598
Speed66 t/s
In /1M$5
Out /1M$25
+30 Elo0% price1.1x speed
View specs →vs this
Claude Haiku 4.5
Anthropic
Haiku 4.5
Elo1438
Speed175 t/s
In /1M$1
Out /1M$5
-130 Elo-80% price2.8x speed
Selected
Top Rival Showdowns for Claude Haiku 4.5
All Matchups
Compare vs:vs GPT-5vs Gemini 3 Provs Grok 4.6vs DeepSeek V4 Provs Qwen 3 Max
Preference Leader

No shared data

Single model data

Throughput Leader

No shared data

No latency data

Value per Dollar Leader

Claude Haiku 4.5

$5 / 1M output

Capability Percentiles

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

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 Haiku 4.5 5/6
Head-to-Head Comparison

Overall Matchup Breakdown

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

Claude Haiku 4.5 (9)vsOpenAI: GPT-5.5 Pro (batch) (1)
Claude Haiku 4.5: 9W (90%)Overall: Claude Haiku 4.5OpenAI: GPT-5.5 Pro (batch): 1W (10%)
← Claude Haiku 4.5OpenAI: GPT-5.5 Pro (batch) →
Claude Haiku 4.5 (5/5)

Intelligence & Reasoning

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

Preference Elo
1,438vs—
Coding Elo
1,446vs—
SWE-bench
58.2%vs—
LiveBench
62.4%vs—
GPQA Diamond
74%vs—
Claude Haiku 4.5: 5WOpenAI: GPT-5.5 Pro (batch): 0W
Claude Haiku 4.5 (2/2)

Speed & Latency

Generation throughput and time to first token responsiveness

Output speed
175 tok/svs—
Time to first token
95 msvs—
Claude Haiku 4.5: 2WOpenAI: GPT-5.5 Pro (batch): 0W
Claude Haiku 4.5 (2/3)

Pricing & Capacity

Cost per million tokens and max context window length

Output price
$5/1Mvs$90/1M
Input price
$1/1Mvs$15/1M
Context window
200kvs1.1M
Claude Haiku 4.5: 2WOpenAI: GPT-5.5 Pro (batch): 1W

Side-by-Side Benchmark Matrix

Preference Elo
Claude Haiku 4.51,438
lmarena · Aug 16, 2026
OpenAI: GPT-5.5 Pro (batch)—
Coding Elo
Claude Haiku 4.51,446
lmarena · Aug 16, 2026
OpenAI: GPT-5.5 Pro (batch)—
LiveBench
Claude Haiku 4.562.4%
livebench · Aug 16, 2026
OpenAI: GPT-5.5 Pro (batch)—
SWE-bench
Claude Haiku 4.558.2%
swebench · Aug 16, 2026
OpenAI: GPT-5.5 Pro (batch)—
GPQA Diamond
Claude Haiku 4.574%
seed-bootstrap · Aug 16, 2026
OpenAI: GPT-5.5 Pro (batch)—
Time to first token
Claude Haiku 4.595 ms
seed-bootstrap · Aug 16, 2026
OpenAI: GPT-5.5 Pro (batch)—
Output speed
Claude Haiku 4.5175 tok/s
seed-bootstrap · Aug 16, 2026
OpenAI: GPT-5.5 Pro (batch)—
Input priceClaude Haiku 4.5 (+$14/1M)
Claude Haiku 4.5$1/1M
openrouter · Aug 17, 2026
OpenAI: GPT-5.5 Pro (batch)$15/1M
openrouter · Aug 17, 2026
Output priceClaude Haiku 4.5 (+$85/1M)
Claude Haiku 4.5$5/1M
openrouter · Aug 17, 2026
OpenAI: GPT-5.5 Pro (batch)$90/1M
openrouter · Aug 17, 2026
Context windowOpenAI: GPT-5.5 Pro (batch) (+850k)
Claude Haiku 4.5200k
openrouter · Aug 17, 2026
OpenAI: GPT-5.5 Pro (batch)1.1M
openrouter · Aug 17, 2026
BenchmarkClaude Haiku 4.5OpenAI: GPT-5.5 Pro (batch)Advantage Delta
Preference Elo
1,438
lmarena · Aug 16, 2026
——
Coding Elo
1,446
lmarena · Aug 16, 2026
——
LiveBench
62.4%
livebench · Aug 16, 2026
——
SWE-bench
58.2%
swebench · Aug 16, 2026
——
GPQA Diamond
74%
seed-bootstrap · Aug 16, 2026
——
Time to first token
95 ms
seed-bootstrap · Aug 16, 2026
——
Output speed
175 tok/s
seed-bootstrap · Aug 16, 2026
——
Input price
$1/1M
openrouter · Aug 17, 2026
$15/1M
openrouter · Aug 17, 2026
Claude Haiku 4.5 (+$14/1M)
Output price
$5/1M
openrouter · Aug 17, 2026
$90/1M
openrouter · Aug 17, 2026
Claude Haiku 4.5 (+$85/1M)
Context window
200k
openrouter · Aug 17, 2026
1.1M
openrouter · Aug 17, 2026
OpenAI: GPT-5.5 Pro (batch) (+850k)
Interactive Simulator (USD)

Workload Cost & Savings Calculator

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

Save up to 94% with Claude Haiku 4.5
Monthly Volume50M tokens/mo
Quick Presets:
Token Ratio (In vs Out)70% In / 30% Out
RAG / Search (10% out)Coding / Chat (50% out)
Claude Haiku 4.5$110.00 / mo
In: $35Out: $75
OpenAI: GPT-5.5 Pro (batch)$1,875.00 / mo
In: $525Out: $1,350
Estimated Cost Delta

Claude Haiku 4.5 is estimated to save $1,765.00/month ($21,180/year).

Based on 50M tokens (30% gen)

Key Selection Recommendations

  • 1
    Claude Haiku 4.5:Pick Claude Haiku 4.5 when you are optimizing output cost.
  • 2
    OpenAI: GPT-5.5 Pro (batch):Pick OpenAI: GPT-5.5 Pro (batch) for million-token RAG or long-document jobs.

Recommended Workload Routing

Repo / coding agentsinsufficient data

Need SWE-bench on both sides.

High-volume chatClaude Haiku 4.5

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

Voice / low-latency UIinsufficient data

Need TTFT on both sides.

Long-document RAGOpenAI: GPT-5.5 Pro (batch)

Larger window (1.1M).

Screenshots / visionClaude Haiku 4.5

Claude Haiku 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 chatClaude Haiku 4.5Lower output list price ($5/1M).
Voice / low-latency UIinsufficient dataNeed TTFT on both sides.
Long-document RAGOpenAI: GPT-5.5 Pro (batch)Larger window (1.1M).
Screenshots / visionClaude Haiku 4.5Claude Haiku 4.5 is the side marked multimodal in the catalog.

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 Matrix

Verified head-to-head card

LIVE
VS
Anthropic

Claude Haiku 4.5

Elo 1,438
LiveBench62.4%
SWE-bench58.2%
Speed175 tok/s
Output cost$5/1M
OpenAI

OpenAI: GPT-5.5 Pro (batch)

Elo n/a
LiveBench—
SWE-bench—
Speed—
Output cost$90/1M

Frequently Asked Questions

Which is better overall, Claude Haiku 4.5 or OpenAI: GPT-5.5 Pro (batch)?
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, Claude Haiku 4.5 or OpenAI: GPT-5.5 Pro (batch)?
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?
Claude Haiku 4.5 output tokens are $5/1M versus $90/1M. Input prices and retry rates still move the real bill.
Which is faster, Claude Haiku 4.5 or OpenAI: GPT-5.5 Pro (batch)?
We do not have TTFT for both models.
Which has the larger context window?
OpenAI: GPT-5.5 Pro (batch) accepts 1.1M 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 Haiku 4.5 and OpenAI: GPT-5.5 Pro (batch) 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 Haiku 4.5 matchups →|All OpenAI: GPT-5.5 Pro (batch) matchups →
Claude Haiku 4.5 vs Claude 3.5 Haiku (previous haiku)Claude Sonnet 4.5 vs Claude Haiku 4.5GPT-4.5 Orion vs Claude Haiku 4.5GPT-5.6 Terra vs Claude Haiku 4.5Claude Sonnet 5 vs Claude Haiku 4.5GPT-5 vs Claude Haiku 4.5