LLMversus

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

Pricing verified Sep 14, 2026By LLMversusUpdated September 17, 2026View methodology

⚡ Quick Answer

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

Updated: September 14, 2026 · ✓ Pricing verified

Side-by-Side Comparison

FeatureGPT-4 1.5-nanoSonar Pro
ProviderOpenAIPerplexity
Input Price / 1M tokens$0.100$3.00
Output Price / 1M tokens$0.400$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

Related Comparisons

Claude Opus 4 vs Sonar ProClaude Opus 4 vs GPT-4 1.5-nanoClaude Sonnet 4 vs Sonar ProClaude Sonnet 4 vs GPT-4 1.5-nanoGemini 2 5 Pro vs Sonar ProGemini 2 5 Pro vs GPT-4 1.5-nanoClaude Haiku 4 vs Sonar ProClaude Haiku 4 vs GPT-4 1.5-nanoDeepseek R1 vs Sonar ProDeepseek R1 vs GPT-4 1.5-nanoQwen 2 5 Max vs Sonar ProGPT-4 1.5-nano vs Qwen 2 5 MaxGemini 2 0 Flash vs Sonar ProGemini 2 0 Flash vs GPT-4 1.5-nanoDeepseek V3 vs Sonar ProDeepseek V3 vs GPT-4 1.5-nanoO3 Mini vs Sonar ProGPT-4 1.5-nano vs O3 MiniO3 vs Sonar ProGPT-4 1.5-nano vs O3