Overview
As the demand for high-quality AI-assisted development grows, choosing the right model for your codebase is critical. In this report, we evaluate OpenAI: GPT-5.4 vs xAI: Grok 4 specifically focusing on Coding Performance with 10 Evaluators. Our PeerLM evaluation framework utilizes a rigorous comparative ranking methodology to determine how these models handle complex coding prompts and instruction adherence.
Benchmark Results
The leaderboard results highlight a distinct performance gap between the two models when subjected to the same set of coding tasks.
| Model | Overall Score | Accuracy | Instruction Following |
|---|---|---|---|
| OpenAI: GPT-5.4 | 6.05 | 6.05 | 6.05 |
| xAI: Grok 4 | 3.95 | 3.95 | 3.95 |
Criteria Breakdown
Our evaluation focused on two core pillars of coding utility: Accuracy and Instruction Following. While both models demonstrate proficiency in language generation, the comparative ranking shows that OpenAI: GPT-5.4 consistently produces code that requires fewer manual revisions. xAI: Grok 4, while robust, struggled to maintain the same level of precision across the 10-evaluator cohort, resulting in a score spread of 2.1.
Cost & Latency
Efficiency is a secondary yet vital component of any coding workflow. The following table breaks down the operational costs and latency observed during the testing phase.
| Model | Avg Latency (ms) | Total Cost (USD) |
|---|---|---|
| OpenAI: GPT-5.4 | 0 | $0.010055 |
| xAI: Grok 4 | 317 | $0.092487 |
OpenAI: GPT-5.4 provides a highly economical and performant profile, whereas xAI: Grok 4 shows higher token consumption, which may impact use cases requiring large-scale automated code generation.
Use Cases
- OpenAI: GPT-5.4: Best suited for real-time coding assistants, complex architectural refactoring, and scenarios where cost-to-performance ratio is the primary driver.
- xAI: Grok 4: Appropriate for specialized enterprise tasks where specific stylistic constraints are required, though it may require more granular prompt engineering to match the accuracy of GPT-5.4.
Verdict
For developers prioritizing raw coding output quality and efficiency, OpenAI: GPT-5.4 is the clear leader in this evaluation. While xAI: Grok 4 offers a unique set of capabilities, its current performance in our Coding Performance with 10 Evaluators suite suggests it is better suited for specific niche requirements rather than general-purpose coding tasks.