Compare · ModelsLive · 2 picked · head to head
GPT-5 Chat vs Palmyra X5
Side by side · benchmarks, pricing, and signals you can act on.
Winner summary
GPT-5 Chat wins on 5/5 benchmarks
GPT-5 Chat wins 5 of 5 shared benchmarks. Leads in knowledge · language · math.
Category leads
knowledge·GPT-5 Chatlanguage·GPT-5 Chatmath·GPT-5 Chatreasoning·GPT-5 Chat
Hype vs Reality
Attention vs performance
GPT-5 Chat
#1 by perf·#1 by attention
Palmyra X5
#15 by perf·no signal
Best value
Palmyra X5
1.5x better value than GPT-5 Chat
GPT-5 Chat
14.6 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 ChatPalmyra X5
HELM · GPQA
GPT-5 Chat leads by +13.0
GPT-5 Chat
79.1
Palmyra X5
66.1
HELM · IFEval
GPT-5 Chat leads by +5.2
GPT-5 Chat
87.5
Palmyra X5
82.3
HELM · MMLU-Pro
GPT-5 Chat leads by +5.9
GPT-5 Chat
86.3
Palmyra X5
80.4
HELM · Omni-MATH
GPT-5 Chat leads by +23.2
GPT-5 Chat
64.7
Palmyra X5
41.5
HELM · WildBench
GPT-5 Chat leads by +7.7
GPT-5 Chat
85.7
Palmyra X5
78.0
Full benchmark table
| Benchmark | GPT-5 Chat | Palmyra X5 |
|---|---|---|
HELM · GPQA | 79.1 | 66.1 |
HELM · IFEval | 87.5 | 82.3 |
HELM · MMLU-Pro | 86.3 | 80.4 |
HELM · Omni-MATH | 64.7 | 41.5 |
HELM · WildBench | 85.7 | 78.0 |
Pricing · per 1M tokens · projected $/mo at 10M tokens
| Model | Input | Output | Context | Projected $/mo |
|---|---|---|---|---|
| GPT-5 Chat | $1.25 | $10.00 | 128K tokens (~64 books) | $34.38 |
| Palmyra X5 | $0.60 | $6.00 | 1.0M tokens (~520 books) | $19.50 |