Compare · ModelsLive · 2 picked · head to head
GPT-5.1 vs Palmyra X5
Side by side · benchmarks, pricing, and signals you can act on.
Winner summary
GPT-5.1 wins on 3/5 benchmarks
GPT-5.1 wins 3 of 5 shared benchmarks. Leads in language · math · reasoning.
Category leads
knowledge·Palmyra X5language·GPT-5.1math·GPT-5.1reasoning·GPT-5.1
Hype vs Reality
Attention vs performance
GPT-5.1
#97 by perf·no signal
Palmyra X5
#17 by perf·no signal
Best value
Palmyra X5
2.4x better value than GPT-5.1
GPT-5.1
8.8 pts/$
$5.63/M
Palmyra X5
21.1 pts/$
$3.30/M
Vendor risk
Who is behind the model
OpenAI
$840.0B·Tier 1
writer
private · undisclosed
Head to head
5 benchmarks · 2 models
GPT-5.1Palmyra X5
HELM · GPQA
Palmyra X5 leads by +21.9
GPT-5.1
44.2
Palmyra X5
66.1
HELM · IFEval
GPT-5.1 leads by +11.2
GPT-5.1
93.5
Palmyra X5
82.3
HELM · MMLU-Pro
Palmyra X5 leads by +22.5
GPT-5.1
57.9
Palmyra X5
80.4
HELM · Omni-MATH
GPT-5.1 leads by +4.9
GPT-5.1
46.4
Palmyra X5
41.5
HELM · WildBench
GPT-5.1 leads by +8.3
GPT-5.1
86.3
Palmyra X5
78.0
Full benchmark table
| Benchmark | GPT-5.1 | Palmyra X5 |
|---|---|---|
HELM · GPQA | 44.2 | 66.1 |
HELM · IFEval | 93.5 | 82.3 |
HELM · MMLU-Pro | 57.9 | 80.4 |
HELM · Omni-MATH | 46.4 | 41.5 |
HELM · WildBench | 86.3 | 78.0 |
Pricing · per 1M tokens · projected $/mo at 10M tokens
| Model | Input | Output | Context | Projected $/mo |
|---|---|---|---|---|
| $1.25 | $10.00 | 400K tokens (~200 books) | $34.38 | |
| $0.60 | $6.00 | 1.0M tokens (~520 books) | $19.50 |