Compare · ModelsLive · 2 picked · head to head
Claude Opus 4.5 vs GPT-5.1-Codex-Mini
Side by side · benchmarks, pricing, and signals you can act on.
Winner summary
GPT-5.1-Codex-Mini wins on 0/0 benchmarks
Not enough overlapping benchmarks to declare a winner yet · Claude Opus 4.5 · GPT-5.1-Codex-Mini are still filling in scores.
Hype vs Reality
Attention vs performance
Claude Opus 4.5
#113 by perf·no signal
GPT-5.1-Codex-Mini
#41 by perf·no signal
Best value
GPT-5.1-Codex-Mini
17.7x better value than Claude Opus 4.5
Claude Opus 4.5
3.0 pts/$
$15.00/M
GPT-5.1-Codex-Mini
53.7 pts/$
$1.13/M
Vendor risk
Who is behind the model
Anthropic
$380.0B·Tier 1
OpenAI
$840.0B·Tier 1
Pricing · per 1M tokens · projected $/mo at 10M tokens
| Model | Input | Output | Context | Projected $/mo |
|---|---|---|---|---|
| $5.00 | $25.00 | 200K tokens (~100 books) | $100.00 | |
| $0.25 | $2.00 | 400K tokens (~200 books) | $6.88 |
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