Build AI powered apps for your work

Get started free
LLM ComparisonGPT-5.5GPT-4o mini

GPT-5.5 vs GPT-4o mini

Compare GPT-5.5 and GPT-4o mini. Build AI products powered by either model on Appaca.

Model Comparison

FeatureGPT-5.5GPT-4o mini
ProviderOpenAIOpenAI
Model Typetexttext
Context Window1,000,000 tokens128,000 tokens
Input Cost
$5.00/ 1M tokens
$0.15/ 1M tokens
Output Cost
$30.00/ 1M tokens
$0.60/ 1M tokens

Stop choosing. Use both.

With Appaca you don't have to pick — build apps that are powered by GPT-5.5, GPT-4o mini, for your specific use case.

Build your first app free

Strengths & Best Use Cases

GPT-5.5

OpenAI

1. Strongest Agentic Coding Model

  • State-of-the-art on Terminal-Bench 2.0 (82.7%), Expert-SWE (73.1%), and SWE-Bench Pro (58.6%), outperforming GPT-5.4 on complex coding tasks.
  • Holds context across large systems, reasons through ambiguous failures, and carries changes through surrounding codebases with fewer tokens.

2. Higher Intelligence at GPT-5.4 Latency

  • Co-designed, trained, and served on NVIDIA GB200/GB300 NVL72 systems to match GPT-5.4 per-token latency while performing at a significantly higher level.
  • Uses fewer tokens to complete the same tasks, making it more efficient as well as more capable.

3. Powerful for Knowledge Work & Computer Use

  • Scores 84.9% on GDPval (44 occupations) and 78.7% on OSWorld-Verified for autonomous computer operation.
  • Excels at generating documents, spreadsheets, and reports; naturally moves across finding information, using tools, and checking output.

4. Scientific Research Co-Scientist

  • Leading performance on GeneBench, BixBench, and FrontierMath; helped discover a new proof about Ramsey numbers verified in Lean.
  • Strong enough to meaningfully accelerate progress at the frontiers of biomedical and mathematical research.

GPT-4o mini

OpenAI

1. Fast, cost-efficient performance

  • Designed for low-latency, high-throughput workloads.
  • Ideal for production systems where speed and budget matter more than deep reasoning power.

2. Great for focused NLP tasks

  • Excels at classification, tagging, entity extraction, rewriting, paraphrasing, and SEO tasks.
  • Strong at translation and keyword generation due to efficient language understanding.

3. Multimodal input capable (text + image)

  • Accepts images for lightweight visual analysis, categorization, or extraction.
  • Outputs text only, ensuring deterministic and easily integrated responses.

4. Supports advanced developer features

  • Structured Outputs for predictable schemas.
  • Function calling for building tool-augmented agents.
  • Fully compatible with Batch API for large-scale processing.

5. Easy to fine-tune

  • One of the best OpenAI models for domain-specific fine-tuning.
  • Allows organizations to compress larger models' behavior (like GPT-4o) into a smaller footprint.

6. Suitable for distillation workflows

  • Can approximate GPT-4o or GPT-5 outputs using distillation, dramatically reducing cost.
  • Enables scalable deployment for high-volume applications.

7. Large context window for its size

  • 128K context supports multi-step tasks, multi-document inputs, and long-running conversations.
  • Useful for agents that need memory across extended sessions.

8. Reliable for commercial production

  • Stable, predictable, and low-variance outputs make it ideal for automation and enterprise stacks.
  • Works well in synchronous or asynchronous pipelines.