Compare · ModelsLive · 2 picked · head to head
GPT-5.5 vs Llama 3.1 70B Instruct
Side by side · benchmarks, pricing, and signals you can act on.
Winner summary
GPT-5.5 wins on 1/1 benchmarks
GPT-5.5 wins 1 of 1 shared benchmarks. Leads in knowledge.
Category leads
knowledge·GPT-5.5
Hype vs Reality
Attention vs performance
GPT-5.5
#2 by perf·#4 by attention
Llama 3.1 70B Instruct
#216 by perf·#18 by attention
Best value
Llama 3.1 70B Instruct
18.7x better value than GPT-5.5
GPT-5.5
4.9 pts/$
$17.50/M
Llama 3.1 70B Instruct
90.7 pts/$
$0.40/M
Vendor risk
Who is behind the model
OpenAI
$840.0B·Tier 1
Meta AI
$1.87T·Tier 1
Head to head
1 benchmark · 2 models
GPT-5.5Llama 3.1 70B Instruct
GPQA diamond
GPT-5.5 leads by +68.0
Graduate-Level Google-Proof QA (Diamond set) · expert-crafted questions in physics, biology, and chemistry that are difficult even for domain PhDs.
GPT-5.5
93.6
Llama 3.1 70B Instruct
25.6
Full benchmark table
| Benchmark | GPT-5.5 | Llama 3.1 70B Instruct |
|---|---|---|
GPQA diamond Graduate-Level Google-Proof QA (Diamond set) · expert-crafted questions in physics, biology, and chemistry that are difficult even for domain PhDs. | 93.6 | 25.6 |
Pricing · per 1M tokens · projected $/mo at 10M tokens
| Model | Input | Output | Context | Projected $/mo |
|---|---|---|---|---|
| $5.00 | $30.00 | 400K tokens (~200 books) | $112.50 | |
| $0.40 | $0.40 | 131K tokens (~66 books) | $4.00 |