Which model is better: Claude 3.5 Haiku or o3-mini?

Claude 3.5 Haiku is 27.3% cheaper for input tokens ($0.80 vs. $1.10 per 1M tokens) and $4.00 vs. $4.40 for output tokens (1.4x cost difference). In terms of operational performance, Claude 3.5 Haiku delivers faster response latency with 140ms TTFT (1060ms faster than o3-mini). o3-mini leads coding benchmarks at 49.3% SWE-bench vs. 40.6% for Claude 3.5 Haiku.
Verified daily via automated API latency tests and official documentation.

Verified Performance & Unit Economics Delta

Daily synchronized metrics from synthetic latency endpoints and benchmark evaluations.

Metric / Dimension Claude 3.5 Haiku o3-mini Net Delta / Advantage
Input Cost / 1M Tokens $0.80 $1.10 Claude 3.5 Haiku is 1.4x cheaper
Output Cost / 1M Tokens $4.00 $4.40 Claude 3.5 Haiku (9.1% lower)
Avg TTFT Response Latency 140ms 1200ms Claude 3.5 Haiku (+1060ms faster)
SWE-bench Verified (Coding) 40.6% 49.3% o3-mini (+8.7% lead)
Inference Value Score (IVR) 70.4 / 100 77 / 100 o3-mini (+6.6 pts)

Interactive Monthly Token Economics & ROI Forecaster

Model your expected production workload across prompt (input) and completion (output) tokens.

Live Calculation Engine
10.0M Tokens
100K 50M 250M 500M+
2.5M Tokens
100K 10M 50M 100M+

Estimated Monthly Spend

Claude 3.5 Haiku $5.45

$0.8/1M in · $4/1M out

o3-mini $67.50

$1.1/1M in · $4.4/1M out

Projected Monthly Cost Reduction
$62.05 / mo
(91.9% lower cost)
A

When to Choose Claude 3.5 Haiku

Choose Claude 3.5 Haiku when you need High-speed API routing, conversational triage, extraction, and edge agent tasks. and have an infrastructure budget aligned with $0.80/1M tokens.

B

When to Choose o3-mini

Choose o3-mini when you need Cost-efficient STEM reasoning, high-throughput math problem-solving, and structured code synthesis. and prioritize OpenAI ecosystem integration at $1.10/1M tokens.

Related Questions & Decision Factors

Which is cheaper: Claude 3.5 Haiku or o3-mini?

Claude 3.5 Haiku is cheaper at $0.80/1M input tokens compared to $1.10/1M for o3-mini.

Which model has lower latency: Claude 3.5 Haiku or o3-mini?

Claude 3.5 Haiku delivers faster response times with an average TTFT of 140ms vs 1200ms for o3-mini.

When should you choose Claude 3.5 Haiku?

Choose Claude 3.5 Haiku when you need High-speed API routing, conversational triage, extraction, and edge agent tasks. and have an infrastructure budget aligned with $0.80/1M tokens.

When should you choose o3-mini?

Choose o3-mini when you need Cost-efficient STEM reasoning, high-throughput math problem-solving, and structured code synthesis. and prioritize OpenAI ecosystem integration at $1.10/1M tokens.

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