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GPT-5 mini vs Claude Haiku 4.5

Side-by-side pricing, capabilities, real-world cost across common scenarios, and our editorial pick.

Add a modelUp to 4 models can be compared
all prices in USD per 1M tokens
OVERALL WINNER

GPT-5 mini

OpenAI · released 2026-01-15

Quality (AA Index)84
Input price$0.25
Output price$2.00
Context400K
Throughput280 tok/s
P50 latency0.3s
View full pricing

Claude Haiku 4.5

Anthropic · released 2026-04-08

Quality (AA Index)79
Input price$1.00
Output price$5.00
Context200K
Throughput250 tok/s
P50 latency0.4s
View full pricing
Try GPT-5 mini on OpenRouterTry Claude Haiku 4.5 on OpenRouter

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Head-to-head specs

Green column = winner per metric
MetricGPT-5 miniClaude Haiku 4.5Verdict
Input price
/1M tokens
$0.25$1.00GPT-5 mini −75%
Output price
/1M tokens
$2.00$5.00GPT-5 mini −60%
Context window
max input length
400K200KGPT-5 mini +2.0×
AA Quality
AA Intelligence Index (0–100)
8479GPT-5 mini +5pt
Arena Elo
LMArena human-pref Elo (800–2000)
——Tied
Throughput
tokens per second
280250GPT-5 mini +12%
P50 latency
first token
0.3s0.4sGPT-5 mini −25%
Vision
multimodal
Tied
Function calling
tool use
Tied
Reasoning mode
chain-of-thought
Tied

Monthly cost across common scenarios

Default usage assumptions
ScenarioGPT-5 miniClaude Haiku 4.5
customer support
1000K req · 600/180 tok
$510$1.5K
chat with docs
300K req · 4000/300 tok
$480$1.6K
code generation
500K req · 2000/500 tok
$750$2.3K
voice assistant
600K req · 800/200 tok
$360$1.1K
Our pick

For most workloads, choose GPT-5 mini.

  • 75% cheaper input price, which compounds at scale
  • 2.0× the context window — better for long documents and agents
  • 12% faster throughput — matters for streaming UX and voice agents

GPT-5 family inheritance at a fraction of the cost — strong on routine tasks but visibly weaker on multi-step reasoning. Default choice when GPT-5 is overkill.

Choose Claude Haiku 4.5 instead if: Anthropic’s economy tier — gentler tone, stronger safety patterns than mainstream tiny models. Choose when output voice matters more than raw IQ.

Read our deep analysis

Why pick? Use both with smart routing

Phase 2 · gateway with fallback chain

Set GPT-5 mini as primary, Claude Haiku 4.5 as fallback. One key, one bill, automatic failover when GPT-5 mini errors.

PHASE 2 PREVIEW · gateway not live yetThis endpoint does not exist yet. The gateway is in Phase 2 — what you see below is a design preview of the planned interface, not a live API. We will email subscribers when it launches.
Preview the planned API call
$ curl https://api.aipricly.com/v1/chat/completions \
  -H "Authorization: Bearer $AIPC_KEY" \
  -d '{
    "routing": {
      "primary": "openai/gpt-5-mini",
      "fallback": ["anthropic/claude-haiku-4-5"]
    },
    "messages": [{"role": "user", "content": "..."}]
  }'

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