GPT-5.4 Mini vs Sonar (Comparative Analysis)
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Comparative Analysis: GPT-5.4 Mini vs. Sonar
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Overview
Sonar was released 1 year before GPT-5.4 Mini.
 GPT-5.4 Mini |  Sonar | |
|---|---|---|
Model Provider The organization behind this AI's development | OpenAI | Perplexity |
Input Context Window Maximum input tokens this model can process at once | 400K tokens | 127.1K tokens |
Output Token Limit Maximum output tokens this model can generate at once | 128K tokens | Not specified tokens |
Release Date When this model first became publicly available | March 17, 2026 4 months ago March 17th, 2026 | January 27, 2025 1 year ago January 27th, 2025 |
Knowledge Cutoff Latest training-data date reported by the provider | August 31, 2025 | Not reported |
Capabilities & Features
Compare supported features, modalities, and advanced capabilities
GPT-5.4 Mini | Sonar | |
|---|---|---|
Input Types Supported input formats | 📁File🖼️Image📝Text | 📝Text🖼️Image |
Reasoning Controls Defaults and configurable reasoning effort | OptionalEffort: Extra High, High, Medium, Low, NoneDefault: Medium | Not reported |
Output Types Supported output formats | 📝Text | 📝Text |
Tokenizer Text encoding system | GPT | Other |
Key Features Advanced capabilities | ✓Function Calling✓Structured Output✓Reasoning Mode✓Content Moderation | Function CallingStructured OutputReasoning ModeContent Moderation |
Pricing
GPT-5.4 Mini is roughly 0.8x less expensive compared to Sonar for input tokens and roughly 4.5x more expensive for output tokens.
| GPT-5.4 Mini | Sonar | |
|---|---|---|
Input Token Cost Cost per million input tokens | $0.75 per million tokens | $1.00 per million tokens |
Output Token Cost Cost per million output tokens | $4.50 per million tokens | $1.00 per million tokens |
Web Search Cost Additional cost for each web search operation | $0.01 per search | $0.005 per search |
Cache Read Cost Cost to reuse cached input tokens | $0.07 per million tokens | Not specified |
Benchmarks
Compare relevant benchmarks between GPT-5.4 Mini and Sonar.
| GPT-5.4 Mini | Sonar | |
|---|---|---|
Intelligence Index Overall model quality across independent evaluations | 40 (Artificial Analysis index; higher is better) | Benchmark not available. |
Coding Index Programming performance across independent evaluations | 56.1 (Artificial Analysis index; higher is better) | Benchmark not available. |
Agentic Index Ability to complete multi-step agentic tasks | 30.2 (Artificial Analysis index; higher is better) | Benchmark not available. |
At a Glance
Quick overview of what makes GPT-5.4 Mini and Sonar unique.
GPT-5.4 Mini by OpenAI understands both text and images, can use external tools and APIs, offers advanced reasoning, generates structured data. It can handle standard conversations with its 400K token context window. Reasonably priced at $0.75/M input and $4.50/M output tokens. Includes built-in content moderation for safer outputs. Released March 17th, 2026.Sonar by Perplexity understands both text and images. It can handle standard conversations with its 127.1K token context window. Reasonably priced at $1.00/M input and $1.00/M output tokens. Released January 27th, 2025.Explore More Comparisons
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Compare Sonar with:
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Models optimized for creative writing
📢Marketing
Content creation and marketing tasks
💻Technology
Technical analysis and explanations
🔬Science
Scientific research and analysis
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