Sonar Pro Search is $27 cheaper per 1M input tokens (90% lower; 10x difference).
API cost decision in 10 seconds
GPT-5.4 Pro vs Sonar Pro Search
Pick Sonar Pro Search for lower cost; pick GPT-5.4 Pro only if the larger context window matters more.
Pricing data updated:
Prices normalized to USD per 1M tokens
Sample workload: 1M input + 500K output
Budget verdict
Pick Sonar Pro Search for lower cost; pick GPT-5.4 Pro only if the larger context window matters more.
On the standard 1M input plus 500K output workload, Sonar Pro Search is estimated at $10.5 vs $120 for GPT-5.4 Pro, saving $109.5 (91.2% lower).
Cost-first pickSonar Pro Search
Context-first pickGPT-5.4 Pro
Sample savings$109.591.2%
10x traffic gap$1095
GPT-5.4 Pro has more context, but Sonar Pro Search saves $109.5 on the standard workload. At 10x that traffic, the same price gap is about $1095. Use the calculator below to replace the sample workload with your own token volume.
Cost sensitivity
Workload Sensitivity
Sonar Pro Search stays cheaper across input-heavy, balanced, and output-heavy sample workloads.
| Workload shape | Token mix | Better pick | GPT-5.4 Pro | Sonar Pro Search |
|---|---|---|---|---|
| Input-heavy / RAG | 5M input + 500K output | Sonar Pro Search | $240 | $22.5 |
| Balanced workload | 1M input + 1M output | Sonar Pro Search | $210 | $18 |
| Output-heavy chatbot | 1M input + 5M output | Sonar Pro Search | $930 | $78 |
Sonar Pro Search is $165 cheaper per 1M output tokens (91.7% lower; 12x difference).
GPT-5.4 Pro has 850K more context (5.25x larger).
Sonar Pro Search is $109.5 cheaper on the standard workload (91.2% lower).
Estimate your workload cost
Your Workload Cost
This estimate uses normalized public API pricing per 1M tokens. It is a planning aid, not a billing quote. Verify provider pricing, limits, and terms before production use.
Quick Decision
Sonar Pro Search has the lower input price; Sonar Pro Search has the lower output price; GPT-5.4 Pro offers the larger context window. For the 1M input plus 500K output sample, Sonar Pro Search is cheaper for the standard workload.
For a 1M input token plus 500K output token workload, the estimated API cost is $120 for GPT-5.4 Pro and $10.5 for Sonar Pro Search.
Choose GPT-5.4 Pro when you care most about larger context window.
Choose Sonar Pro Search when you care most about lower input-token price, and lower output-token price.
- On the standard 1M input plus 500K output workload, Sonar Pro Search is estimated at $10.5 vs $120 for GPT-5.4 Pro, saving $109.5 (91.2% lower).
- Sonar Pro Search is $109.5 cheaper on the standard workload (91.2% lower).
- Sonar Pro Search is $27 cheaper per 1M input tokens (90% lower; 10x difference).
- Sonar Pro Search is $165 cheaper per 1M output tokens (91.7% lower; 12x difference).
- GPT-5.4 Pro has 850K more context (5.25x larger).
| Feature | GPT-5.4 Pro (OpenAI) | Sonar Pro Search (Perplexity) |
|---|---|---|
| Input Price prompt tokens per 1M | $30 | $3 |
| Completion Price per 1M tokens | $180 | $15 |
| Sample Workload Cost 1M input + 500K output | $120 | $10.5 |
| Context Window | 1.05M | 200K |
| Release Date |
Use-Case Decision Matrix
| Use case | Better pick | Why |
|---|---|---|
| Budget-constrained production | Sonar Pro Search | On the standard 1M input plus 500K output workload, Sonar Pro Search is estimated at $10.5 vs $120 for GPT-5.4 Pro, saving $109.5 (91.2% lower). |
| High-volume input processing | Sonar Pro Search | Lower prompt-token price matters most when prompts, retrieved passages, or documents dominate the bill. |
| Long responses and chatbots | Sonar Pro Search | Lower output-token price matters most when assistants generate many completion tokens. |
| RAG or long-document work | GPT-5.4 Pro | A larger context window leaves more room for retrieved passages, conversation history, or source files. |
Related Alternatives
- gpt-oss-120b (free) can replace GPT-5.4 Pro when lower sample workload cost matters most: $0.
- gpt-oss-20b (free) can replace GPT-5.4 Pro when lower sample workload cost matters most: $0.
- gpt-oss-20b can replace GPT-5.4 Pro when lower sample workload cost matters most: $0.1.
- gpt-oss-120b can replace GPT-5.4 Pro when lower sample workload cost matters most: $0.13.
- Llama 4 Scout offers 10M context with $0.23 sample workload cost.
- Grok 4.20 Multi-Agent offers 2M context with $5 sample workload cost.
- Grok 4.20 offers 2M context with $2.5 sample workload cost.
- No popular competitor is currently available.
Cheaper alternatives
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