LLMversus

GPT-4o vs Sonar Reasoning: Pricing, Benchmarks & Verdict (2026)

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

⚡ Quick Answer

Compare GPT-4o and Sonar Reasoning across pricing, benchmarks, and capabilities.

Updated: September 14, 2026 · ✓ Pricing verified

Side-by-Side Comparison

FeatureGPT-4oSonar Reasoning
ProviderOpenAIPerplexity
Input Price / 1M tokens$2.50$2.00
Output Price / 1M tokens$10.00$8.00
Context Window
128K
127K
Max Output Tokens
16,384
8,192
Arena ELO
1,162
1,240
Coding ELO
1,162
1,235
TTFT (ms)
230
150
Tokens/sec
95
100
MultimodalYesNo
JSON ModeYesYes
Function CallingYesYes
VisionYesNo
When to Use GPT-4o

GPT-4o excels at general-purpose, multimodal, function-calling tasks.

Strengths:

  • Fast response times
  • Strong multimodal capabilities
  • Code execution support

Best for:

general-purposemultimodalfunction-calling
When to Use Sonar Reasoning

Sonar Reasoning excels at reasoning, web-search tasks.

Strengths:

  • Reasoning + search
  • Fresh data
  • Good accuracy

Best for:

reasoningweb-search

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