LLM Comparison
Sonar Reasoning Pro vs GPT-5.4
Side-by-side specs, pricing & capabilities · Updated May 2026
Price vs Intelligence
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2/6 modelsSame tier:
| Organization | ||
| OpenTools Score | 44 8.8 | 74 8.4 |
| Family | Sonar | GPT |
| Status | Current | Current |
| Release Date | Mar 2025 | Mar 2026 |
| Context Window | 128K tokens | 1.1M tokens |
| Input Price | $2.00/M tokens | $2.50/M tokens |
| Output Price | $8.00/M tokens | $15.00/M tokens |
| Pricing Notes | — | Cache read: $0.2500/M tokens |
| Capabilities | textvisioncodeextended-thinking | textvisioncode |
| Max Output | — | 128K tokens |
| API Identifier | perplexity/sonar-reasoning-pro | openai/gpt-5.4 |
| Benchmarks | ||
| GPQA Diamond | 62.3perplexity | 93openai |
| MATH-500 | 92.1perplexity | 94.6openai |
| AIME | 77perplexity | — |
| MMLU Pro | 79perplexity | — |
| SWE-bench Pro | — | 57.7openai |
| OSWorld-Verified | — | 75openai |
| Terminal-Bench 2.0 | — | 75.1openai |
| ARC-AGI-2 | — | 73.3openai |
| BrowseComp | — | 82.7openai |
| MMMU-Pro | — | 81.2openai |
| View Sonar Reasoning Pro | View GPT-5.4 | |
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| Model | Input | Output | Total / mo | vs Best |
|---|---|---|---|---|
| Sonar Reasoning ProCheapest | $2.00 | $4.00 | $6.00 | — |
| GPT-5.4 | $2.50 | $7.50 | $10.00 | +67% |
Perplexity AI
Sonar Reasoning Pro
Sonar Reasoning Pro is a multimodal llm from Perplexity AI. Supports up to 128,000 token context window. Achieves 83.0% on MMLU. Available from $2.00/M input tokens.
OpenAI
GPT-5.4
GPT-5.4 is a multimodal llm from OpenAI. Supports up to 1,050,000 token context window. Available from $2.50/M input tokens.
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