Pairwise benchmark snapshot · Aug 16, 2026

Claude Haiku 4.5 vs GPT-5 mini benchmark

Name: Claude Haiku 4.5 vs GPT-5 mini AI benchmark comparison
Creator: CompareLLM
License: https://creativecommons.org/licenses/by/4.0/

This page compares Claude Haiku 4.5 (Anthropic) and GPT-5 mini (OpenAI) using the latest snapshots we have as of Aug 16, 2026. On preference Elo, Claude Haiku 4.5 is ahead by 28 points (1,438 vs 1,410; seed-bootstrap (Aug 16, 2026)). On SWE-bench coding, Claude Haiku 4.5 resolves 58.2% versus 52.4% (seed-bootstrap (Aug 16, 2026)). Claude Haiku 4.5 streams faster (175 tok/s) while GPT-5 mini is the cheaper output token ($2/1M). GPT-5 mini has the larger context window (400k 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 Haiku 4.5

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

Elo 1,438$5/1M out

OpenAI

GPT-5 mini

Cost-efficient GPT-5 distill for high-volume agents.

Elo 1,410$2/1M 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 Haiku 4.5 (7)vsGPT-5 mini (3)

Claude Haiku 4.5: 7W (70%)Overall: Claude Haiku 4.5GPT-5 mini: 3W (30%)

← Claude Haiku 4.5GPT-5 mini →

Claude Haiku 4.5 (5/5)

Intelligence & Reasoning

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

Preference Elo

1,438vs1,410

Coding Elo

1,446vs1,395

SWE-bench

58.2%vs52.4%

LiveBench

62.4%vs61.2%

GPQA Diamond

74%vs72%

Claude Haiku 4.5: 5WGPT-5 mini: 0W

Claude Haiku 4.5 (2/2)

Speed & Latency

Generation throughput and time to first token responsiveness

Output speed

175 tok/svs155 tok/s

Time to first token

95 msvs140 ms

Claude Haiku 4.5: 2WGPT-5 mini: 0W

GPT-5 mini (3/3)

Pricing & Capacity

Cost per million tokens and max context window length

Output price

$5/1Mvs$2/1M

Input price

$1/1Mvs$0.25/1M

Context window

200kvs400k

Claude Haiku 4.5: 0WGPT-5 mini: 3W

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 4/6

Preference Elo

Claude Haiku 4.5

28 pts advantage

Throughput Speed

Claude Haiku 4.5

20 tok/s faster

Price Efficiency

GPT-5 mini

$3.00/1M cheaper

Full Benchmark Score Matrix

—

Elo

High is better

+2%1,438

EloHigh is better

1,410

Code Elo

High is better

+4%1,446

Code EloHigh is better

1,395

LiveBench

High is better

+2%62.4%

LiveBenchHigh is better

61.2%

SWE-bench

High is better

+11%58.2%

SWE-benchHigh is better

52.4%

GPQA

High is better

+3%74%

GPQAHigh is better

72%

TTFT

Low is better

+47%95 ms

TTFTLow is better

140 ms

Speed

High is better

+13%175 tok/s

SpeedHigh is better

155 tok/s

In $

Low is better

$1/1M

In $Low is better

$0.25/1M+300%

Out $

Low is better

$5/1M

Out $Low is better

$2/1M+150%

Context

High is better

200k

ContextHigh is better

400k+100%

Interactive Simulator

Workload Cost & Savings Calculator

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

Save up to 65% with GPT-5 mini

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: $35.00Out: $75.00

GPT-5 mini$38.75 / mo

In: $8.75Out: $30.00

Estimated Cost Delta

GPT-5 mini is estimated to save $71.25/month ($855/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
GPT-5 mini:Pick GPT-5 mini 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 chatGPT-5 mini

Lower output list price ($2/1M).

Voice / low-latency UIClaude Haiku 4.5

Lower TTFT (95 ms).

Long-document RAGGPT-5 mini

Larger window (400k).

Screenshots / visionClaude Haiku 4.5

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

Target Workload	Recommended Pick	Evaluation Rationale
Repo / coding agents	Claude Haiku 4.5	Higher SWE-bench (58.2%).
High-volume chat	GPT-5 mini	Lower output list price ($2/1M).
Voice / low-latency UI	Claude Haiku 4.5	Lower TTFT (95 ms).
Long-document RAG	GPT-5 mini	Larger window (400k).
Screenshots / vision	Claude Haiku 4.5	Both 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.

launchAug 8, 2025

GPT-5 mini: the 2025 distill still useful as a cheap OpenAI baseline

High-volume agents that cannot pay Sol. Compare to Luna before you assume the new cheap SKU wins.

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LIVE

Anthropic

Claude Haiku 4.5

Elo 1,438

LiveBench62.4%

SWE-bench58.2%

Speed175 tok/s

Output cost$5/1M

OpenAI

GPT-5 mini

Elo 1,410

LiveBench61.2%

SWE-bench52.4%

Speed155 tok/s

Output cost$2/1M

Frequently Asked Questions

Which is better overall, Claude Haiku 4.5 or GPT-5 mini?: 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 Haiku 4.5 or GPT-5 mini?: Claude Haiku 4.5 leads SWE-bench at 58.2% vs 52.4%. SWE-bench is one harness, not your repo.
Which is cheaper to run in production?: GPT-5 mini output tokens are $2/1M versus $5/1M. Input prices and retry rates still move the real bill.
Which is faster, Claude Haiku 4.5 or GPT-5 mini?: Claude Haiku 4.5 has the lower time-to-first-token (95 ms vs 140 ms). Tokens/sec is a separate column if you care about long completions.
Which has the larger context window?: GPT-5 mini accepts 400k 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 GPT-5 mini Elo cells are dated snapshots from the named source — we do not compute Arena ourselves.

Similar Head-to-Head Comparisons

All Claude Haiku 4.5 matchups →|All GPT-5 mini matchups →

Claude Haiku 4.5 vs Claude 3.5 Haiku (previous haiku)GPT-5 mini vs OpenAI: o3 Mini (previous gpt-mini)GPT-5 mini vs GPT-5.6 Luna (next gpt-mini)Claude Sonnet 4.5 vs Claude Haiku 4.5 GPT-4.5 Orion vs Claude Haiku 4.5 GPT-5.6 Terra vs Claude Haiku 4.5

Claude Haiku 4.5 vs GPT-5 mini benchmark

Interactive Comparison Diagram

Matchup Breakdown

Tug-of-War Matchup Matrix

Category wins across intelligence, speed, and pricing efficiency.

Claude Haiku 4.5 (7)vsGPT-5 mini (3)

Claude Haiku 4.5: 7W (70%)Overall: Claude Haiku 4.5GPT-5 mini: 3W (30%)

← Claude Haiku 4.5GPT-5 mini →

Claude Haiku 4.5 (5/5)

Intelligence & Reasoning

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

Preference Elo

1,438vs1,410

Coding Elo

1,446vs1,395

SWE-bench

58.2%vs52.4%

LiveBench

62.4%vs61.2%

GPQA Diamond

74%vs72%

Claude Haiku 4.5: 5WGPT-5 mini: 0W

Claude Haiku 4.5 (2/2)

Speed & Latency

Generation throughput and time to first token responsiveness

Output speed

175 tok/svs155 tok/s

Time to first token

95 msvs140 ms

Claude Haiku 4.5: 2WGPT-5 mini: 0W

GPT-5 mini (3/3)

Pricing & Capacity

Cost per million tokens and max context window length

Output price

$5/1Mvs$2/1M

Input price

$1/1Mvs$0.25/1M

Context window

200kvs400k

Claude Haiku 4.5: 0WGPT-5 mini: 3W

Recommended Workload Routing

Repo / coding agentsClaude Haiku 4.5

Higher SWE-bench (58.2%).

High-volume chatGPT-5 mini

Lower output list price ($2/1M).

Voice / low-latency UIClaude Haiku 4.5

Lower TTFT (95 ms).

Long-document RAGGPT-5 mini

Larger window (400k).

Screenshots / visionClaude Haiku 4.5

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

Target Workload	Recommended Pick	Evaluation Rationale
Repo / coding agents	Claude Haiku 4.5	Higher SWE-bench (58.2%).
High-volume chat	GPT-5 mini	Lower output list price ($2/1M).
Voice / low-latency UI	Claude Haiku 4.5	Lower TTFT (95 ms).
Long-document RAG	GPT-5 mini	Larger window (400k).
Screenshots / vision	Claude Haiku 4.5	Both accept images. Defaulting to the higher-Elo side (Claude Haiku 4.5).

Frequently Asked Questions

Which is better overall, Claude Haiku 4.5 or GPT-5 mini?

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 Haiku 4.5 or GPT-5 mini?

Claude Haiku 4.5 leads SWE-bench at 58.2% vs 52.4%. SWE-bench is one harness, not your repo.

Which is cheaper to run in production?

GPT-5 mini output tokens are $2/1M versus $5/1M. Input prices and retry rates still move the real bill.

Which is faster, Claude Haiku 4.5 or GPT-5 mini?

Claude Haiku 4.5 has the lower time-to-first-token (95 ms vs 140 ms). Tokens/sec is a separate column if you care about long completions.

Which has the larger context window?

GPT-5 mini accepts 400k 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 GPT-5 mini 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 Haiku 4.5

Claude Haiku 4.5

GPT-5 mini

Full Benchmark Score Matrix

Workload Cost & Savings Calculator

Key Selection Recommendations

Recommended Workload Routing

Related Editorial Dispatches & Benchmark Notes

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

Llama 4 Scout: long-context open sibling of Maverick

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

GPT-5 mini: the 2025 distill still useful as a cheap OpenAI baseline

Cast Your Matchup Vote

Community Discussions (0)

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CompareLLM Matrix

Claude Haiku 4.5

GPT-5 mini

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 Haiku 4.5

Claude Haiku 4.5

GPT-5 mini

Full Benchmark Score Matrix

Workload Cost & Savings Calculator

Key Selection Recommendations

Recommended Workload Routing

Related Editorial Dispatches & Benchmark Notes

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

Llama 4 Scout: long-context open sibling of Maverick

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

GPT-5 mini: the 2025 distill still useful as a cheap OpenAI baseline

Cast Your Matchup Vote

Community Discussions (0)

Share card

CompareLLM Matrix

Claude Haiku 4.5

GPT-5 mini

Frequently Asked Questions

Related news

Similar Head-to-Head Comparisons