GPT-3.5 TurbovsGPT-5 Mini
GPT-5 Mini is cheaper than GPT-3.5 Turbo at $0.25/M vs $1.5/M input tokens.
| Spec | GPT-3.5 Turbo | GPT-5 Mini |
|---|---|---|
| Input price | $1.5/M tokens | $0.25/M tokens |
| Output price | $2/M tokens | $2/M tokens |
| Context window | 16K tokens | — |
| Weights | Closed | Closed |
| Free API (OpenRouter) | No | No |
| Released | Mar 2022 | Aug 2025 |
Our Verdict
GPT-3.5 Turbo
GPT-5 Mini
Not enough votes to call it. On the specs, nothing separates them.
Too close to call
Reviewing agent-written code?See a Brief PR report
API pricing
Cost per 1M tokens
GPT-3.5 Turbo
Input
$1.50
Output
$2.00
GPT-5 Mini
Input
$0.25
6.0× cheaper
Output
$2.00
Where to run it
3 hosts
GPT-3.5 Turbo1 host
Per million tokens. Prices and uptime via OpenRouter, checked 11 Sep 2026.
Writing DNA
Style Comparison
Similarity
59%
GPT-3.5 Turbo uses 30.8x more bold
GPT-3.5 Turbo
GPT-5 Mini
60%Vocabulary62%
30wSentence Length22w
0.49Hedging0.21
0.3Bold0.0
3.1Lists3.8
0.00Emoji0.00
0.00Headings0.00
0.20Transitions0.04
Based on 28 + 21 text responses
Research
What we learned reading every model
FAQ
Common questions
Keep exploring
More comparisons
GPT-3.5 Turbo vs Ox AlphaNew provider
GPT-3.5 Turbo vs MercuryNew provider
GPT-3.5 Turbo vs MiniMax M2.7New provider
GPT-3.5 Turbo vs MiniMax M3New provider
GPT-3.5 Turbo vs Qwen3 Next 80B A3B InstructNew provider
GPT-3.5 Turbo vs Qwen3 Next 80B A3B ThinkingNew provider
GPT-3.5 Turbo vs Qwen3.5 122B A10BNew provider
GPT-3.5 Turbo vs Qwen3.5 27BNew provider