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GPT-4 1.5-nano vs Sonar Pro: Pricing, Benchmarks & Verdict (2026)

Pricing verified Apr 8, 2026

⚡ Quick Answer

Compare GPT-4 1.5-nano and Sonar Pro across pricing, benchmarks, and capabilities.

Updated: April 8, 2026 · ✓ Pricing verified

Side-by-Side Comparison

FeatureGPT-4 1.5-nanoSonar Pro
ProviderOpenAIPerplexity
Input Price / 1M tokens$0.075$3.00
Output Price / 1M tokens$0.300$15.00
Context Window
128K
200K
Max Output Tokens
4,096
8,192
Arena ELO
1,150
1,200
Coding ELO
1,160
1,195
TTFT (ms)
120
150
Tokens/sec
150
100
MultimodalNoNo
JSON ModeYesYes
Function CallingYesYes
VisionNoNo
When to Use GPT-4 1.5-nano

GPT-4 1.5-nano excels at cost-effective, fast-inference tasks.

Strengths:

  • Super cheap
  • Very fast
  • Large context

Best for:

cost-effectivefast-inference
When to Use Sonar Pro

Sonar Pro excels at web-search, general-purpose, reasoning tasks.

Strengths:

  • Built-in web search
  • Fresh information
  • Long context

Best for:

web-searchgeneral-purposereasoning

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