GPT-5.4 vs Sonar Deep Research (Comparative Analysis)
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Comparative Analysis: GPT-5.4 vs. Sonar Deep Research
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Overview
Sonar Deep Research was released 12 months before GPT-5.4.
 GPT-5.4 |  Sonar Deep Research | |
|---|---|---|
Model Provider The organization behind this AI's development | OpenAI | Perplexity |
Input Context Window Maximum input tokens this model can process at once | 1.1M tokens | 128K 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 5, 2026 4 months ago March 5th, 2026 | March 7, 2025 1 year ago March 7th, 2025 |
Capabilities & Features
Compare supported features, modalities, and advanced capabilities
GPT-5.4 | Sonar Deep Research | |
|---|---|---|
Input Types Supported input formats | 📝Text🖼️Image📁File | 📝Text |
Reasoning Controls Defaults and configurable reasoning effort | OptionalEffort: Extra High, High, Medium, Low, NoneDefault: Medium | Optional |
Output Types Supported output formats | 📝Text | 📝Text |
Tokenizer Text encoding system | GPT | Other |
Key Features Advanced capabilities | ✓Function Calling✓Structured Output✓Reasoning ModeContent Moderation | Function CallingStructured Output✓Reasoning ModeContent Moderation |
Pricing
GPT-5.4 is roughly 1.3x more expensive compared to Sonar Deep Research for input tokens and roughly 1.9x more expensive for output tokens.
| GPT-5.4 | Sonar Deep Research | |
|---|---|---|
Short Context Pricing Base rates before a long-context threshold applies | ||
Input Token Cost Cost per million input tokens | $2.50 per million tokens | $2.00 per million tokens |
Output Token Cost Cost per million output tokens | $15.00 per million tokens | $8.00 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 | $0.25 per million tokens | Not specified |
Reasoning Token Cost Cost for internal reasoning tokens | Not specified | $3.00 per million tokens |
Long Context Pricing Rates for prompts with 272,000 or more tokens | ||
Input Token Cost Long-context input cost per million tokens | $5.00 per million tokens | Not specified |
Output Token Cost Long-context output cost per million tokens | $22.50 per million tokens | Not specified |
Cache Read Cost Long-context cache read cost per million tokens | $0.50 per million tokens | Not specified |
Benchmarks
Compare relevant benchmarks between GPT-5.4 and Sonar Deep Research.
| GPT-5.4 | Sonar Deep Research | |
|---|---|---|
Intelligence Index Overall model quality across independent evaluations | 51.4 (Artificial Analysis index; higher is better) | Benchmark not available. |
Coding Index Programming performance across independent evaluations | 71.1 (Artificial Analysis index; higher is better) | Benchmark not available. |
Agentic Index Ability to complete multi-step agentic tasks | 41.1 (Artificial Analysis index; higher is better) | Benchmark not available. |
Best Design Arena Score Highest human-preference Elo score across design arenas | 1,296 Elo (#19 in Game Dev (57.6% win rate)) | Benchmark not available. |
At a Glance
Quick overview of what makes GPT-5.4 and Sonar Deep Research unique.
GPT-5.4 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 1.1M token context window. Premium pricing at $2.50/M input and $15.00/M output tokens. Released March 5th, 2026.Sonar Deep Research by Perplexity offers advanced reasoning. It can handle standard conversations with its 128K token context window. Reasonably priced at $2.00/M input and $8.00/M output tokens. Released March 7th, 2025.Explore More Comparisons
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