Compare · ModelsLive · 2 picked · head to head
GPT-5.5 Pro vs Mixtral 8x7B Instruct
Side by side · benchmarks, pricing, and signals you can act on.
Winner summary
GPT-5.5 Pro wins on 1/1 benchmarks
GPT-5.5 Pro wins 1 of 1 shared benchmarks. Leads in knowledge.
Category leads
knowledge·GPT-5.5 Pro
Hype vs Reality
Attention vs performance
GPT-5.5 Pro
#8 by perf·#9 by attention
Mixtral 8x7B Instruct
#69 by perf·no signal
Best value
Mixtral 8x7B Instruct
147.1x better value than GPT-5.5 Pro
GPT-5.5 Pro
0.7 pts/$
$105.00/M
Mixtral 8x7B Instruct
107.0 pts/$
$0.54/M
Vendor risk
Who is behind the model
OpenAI
$840.0B·Tier 1
Mistral AI
$24.0B·Tier 1
Head to head
1 benchmark · 2 models
GPT-5.5 ProMixtral 8x7B Instruct
GPQA diamond
GPT-5.5 Pro leads by +88.3
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 Pro
95.7
Mixtral 8x7B Instruct
7.5
Full benchmark table
| Benchmark | GPT-5.5 Pro | Mixtral 8x7B 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. | 95.7 | 7.5 |
Pricing · per 1M tokens · projected $/mo at 10M tokens
| Model | Input | Output | Context | Projected $/mo |
|---|---|---|---|---|
| $30.00 | $180.00 | 1.1M tokens (~525 books) | $675.00 | |
| $0.54 | $0.54 | 33K tokens (~16 books) | $5.40 |