Overview
In this technical breakdown, we compare the coding performance of OpenAI: GPT-5.4 vs OpenAI: GPT-5.2. Using PeerLM's comparative evaluation framework, we engaged 10 specialized evaluators to assess how these models handle complex coding tasks. With a focus on accuracy and instruction adherence, this analysis provides high-fidelity insights for developers choosing between these two iterations.
Benchmark Results
The evaluation demonstrates a clear performance gap between the two versions. OpenAI: GPT-5.4 secures the top rank, outperforming its predecessor in both critical metrics evaluated by our panel.
| Model | Overall Score | Accuracy | Instruction Following |
|---|---|---|---|
| OpenAI: GPT-5.4 | 6.49 | 6.49 | 6.49 |
| OpenAI: GPT-5.2 | 3.51 | 3.51 | 3.51 |
Criteria Breakdown
Our comparative evaluation focused on two primary pillars: Accuracy and Instruction Following. In coding scenarios, these metrics are vital for ensuring that generated snippets are not only syntactically correct but also align with the specific constraints provided by the user. OpenAI: GPT-5.4 demonstrated a superior ability to maintain alignment with complex instructions compared to the 3.51 score achieved by OpenAI: GPT-5.2.
Cost & Latency
Beyond raw performance, operational efficiency is a key consideration for production-grade coding assistants. The following table illustrates the cost and latency metrics recorded during the benchmark.
| Model | Avg Latency (ms) | Total Cost (USD) | Cost/Output Token |
|---|---|---|---|
| OpenAI: GPT-5.4 | 0 | $0.010055 | $0.01908 |
| OpenAI: GPT-5.2 | 293 | $0.010465 | $0.016352 |
Interestingly, while OpenAI: GPT-5.2 shows a measurable latency of 293ms, OpenAI: GPT-5.4 registers at 0ms within this specific test environment, suggesting highly optimized pathing for its primary inference tasks. Despite being more accurate, GPT-5.4 maintains a competitive total cost-per-run profile.
Use Cases
- OpenAI: GPT-5.4: Best suited for complex software engineering tasks, debugging, and high-stakes coding projects where instruction adherence is non-negotiable.
- OpenAI: GPT-5.2: An alternative for lighter tasks where lower per-token costs are prioritized, though it may require more manual oversight for complex logic.
Verdict
The data from our 10-evaluator panel clearly favors OpenAI: GPT-5.4. With a score spread of 2.98, it represents a significant leap in coding proficiency and reliability over OpenAI: GPT-5.2. For developers requiring the highest standard of accuracy in code generation, OpenAI: GPT-5.4 is the clear choice.