Compare · ModelsLive · 2 picked · head to head
GPT-5.3-Codex vs GPT-5.4 Mini
Side by side · benchmarks, pricing, and signals you can act on.
Winner summary
GPT-5.3-Codex wins on 3/3 benchmarks
GPT-5.3-Codex wins 3 of 3 shared benchmarks. Leads in speed.
Category leads
speed·GPT-5.3-Codex
Hype vs Reality
Attention vs performance
GPT-5.3-Codex
#84 by perf·no signal
GPT-5.4 Mini
#160 by perf·no signal
Best value
GPT-5.4 Mini
2.1x better value than GPT-5.3-Codex
GPT-5.3-Codex
6.6 pts/$
$7.88/M
GPT-5.4 Mini
14.1 pts/$
$2.63/M
Vendor risk
Who is behind the model
OpenAI
$840.0B·Tier 1
OpenAI
$840.0B·Tier 1
Head to head
3 benchmarks · 2 models
GPT-5.3-CodexGPT-5.4 Mini
Artificial Analysis · Agentic Index
GPT-5.3-Codex leads by +6.5
GPT-5.3-Codex
62.2
GPT-5.4 Mini
55.7
Artificial Analysis · Coding Index
GPT-5.3-Codex leads by +1.6
GPT-5.3-Codex
53.1
GPT-5.4 Mini
51.5
Artificial Analysis · Quality Index
GPT-5.3-Codex leads by +5.9
GPT-5.3-Codex
54.0
GPT-5.4 Mini
48.1
Full benchmark table
| Benchmark | GPT-5.3-Codex | GPT-5.4 Mini |
|---|---|---|
Artificial Analysis · Agentic Index | 62.2 | 55.7 |
Artificial Analysis · Coding Index | 53.1 | 51.5 |
Artificial Analysis · Quality Index | 54.0 | 48.1 |
Pricing · per 1M tokens · projected $/mo at 10M tokens
| Model | Input | Output | Context | Projected $/mo |
|---|---|---|---|---|
| GPT-5.3-Codex | $1.75 | $14.00 | 400K tokens (~200 books) | $48.13 |
| GPT-5.4 Mini | $0.75 | $4.50 | 400K tokens (~200 books) | $16.88 |