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GPT-4.5 vs Mistral Small: Pricing, Benchmarks & Verdict (2026)

Pricing verified Apr 8, 2026

⚡ Quick Answer

Compare GPT-4.5 and Mistral Small across pricing, benchmarks, and capabilities.

Updated: April 8, 2026 · ✓ Pricing verified

Side-by-Side Comparison

FeatureGPT-4.5Mistral Small
ProviderOpenAIMistral
Input Price / 1M tokens$75.00$0.150
Output Price / 1M tokens$150.00$0.600
Context Window
128K
128K
Max Output Tokens
8,192
8,192
Arena ELO
1,290
1,185
Coding ELO
1,295
1,160
TTFT (ms)
150
160
Tokens/sec
100
120
MultimodalYesNo
JSON ModeYesYes
Function CallingYesYes
VisionYesNo
When to Use GPT-4.5

GPT-4.5 excels at multimodal, vision, general-purpose tasks.

Strengths:

  • Latest OpenAI model
  • Strong multimodal
  • Fast inference

Best for:

multimodalvisiongeneral-purpose
When to Use Mistral Small

Mistral Small excels at chatbots, classification, cost-sensitive, multilingual tasks.

Strengths:

  • Very affordable pricing
  • Fast inference speed
  • Good multilingual support
  • Suitable for lightweight tasks

Best for:

chatbotsclassificationcost-sensitivemultilingual

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