Compare · ModelsLive · 2 picked · head to head
GPT-5.4 vs GPT-5.1-Codex
Side by side · benchmarks, pricing, and signals you can act on.
Winner summary
GPT-5.1-Codex wins on 0/0 benchmarks
Not enough overlapping benchmarks to declare a winner yet · GPT-5.4 · GPT-5.1-Codex are still filling in scores.
Hype vs Reality
Attention vs performance
GPT-5.4
#46 by perf·no signal
GPT-5.1-Codex
#23 by perf·no signal
Best value
GPT-5.1-Codex
1.8x better value than GPT-5.4
GPT-5.4
6.7 pts/$
$8.75/M
GPT-5.1-Codex
12.2 pts/$
$5.63/M
Vendor risk
Who is behind the model
OpenAI
$840.0B·Tier 1
OpenAI
$840.0B·Tier 1
Pricing · per 1M tokens · projected $/mo at 10M tokens
| Model | Input | Output | Context | Projected $/mo |
|---|---|---|---|---|
| $2.50 | $15.00 | 1.1M tokens (~525 books) | $56.25 | |
| $1.25 | $10.00 | 400K tokens (~200 books) | $34.38 |