Compare · ModelsLive · 2 picked · head to head
Claude Sonnet 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 Sonnet 5 · GPT-5.1-Codex-Mini are still filling in scores.
Hype vs Reality
Attention vs performance
Claude Sonnet 5
#66 by perf·#11 by attention
GPT-5.1-Codex-Mini
#52 by perf·#9 by attention
Best value
GPT-5.1-Codex-Mini
5.6x better value than Claude Sonnet 5
Claude Sonnet 5
9.6 pts/$
$6.00/M
GPT-5.1-Codex-Mini
53.7 pts/$
$1.13/M
Vendor risk
Who is behind the model
Anthropic
$965.0B·Tier 1
OpenAI
$840.0B·Tier 1
Pricing · per 1M tokens · projected $/mo at 10M tokens
| Model | Input | Output | Context | Projected $/mo |
|---|---|---|---|---|
| $2.00 | $10.00 | 1.0M tokens (~500 books) | $40.00 | |
| $0.25 | $2.00 | 400K tokens (~200 books) | $6.88 |