Data points: 78
Model compare
The readout for GPT-5.4 and Grok 3, before the detailed comparison sheet.
Weighted outcome: GPT-5.4. Benchmark capability categories carry 80%, while price, API performance, and availability carry 20%.
Decision read
GPT-5.4
GPT-5.4 has the higher weighted result; Model A / B score 92 to 8.
Evidence depth
78 data points
Includes 9 benchmark rows, 1 audit samples, and 6 provider examples.
Selection signal
Start with GPT-5.4
The charts below split 16 high-signal samples across speed, scores, and audit health.
Switch either side of this report to compare another model with the same LMSpeed data pipeline.
Select a different model to open a new comparison URL.
This report only uses LMSpeed data for GPT-5.4 and Grok 3: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Model compare | GPT-5.4 | Grok 3 |
|---|---|---|
| Overall leader | Leading | Contender |
| Weighted overall score | 92.0 pts | 8.0 pts |
| Benchmark category leads | 3 categories | 0 categories |
| Operational advantages | Average speed, Free providers, Provider coverage | Cheapest input price, First-token latency |
| Context window | 1.1M tokens | No data |
| Max output | 128K tokens | No data |
| Modalities | Input TextImageFile Output Text |
The overall result weights benchmark capability categories at 80% and price, API speed/latency, and availability at 20%. Recent test volume does not affect the winner, and missing benchmark categories are excluded.
| Model compare | GPT-5.4 | Grok 3 |
|---|---|---|
| Developer | OpenAI | No data |
| Released | Mar 2026 | No data |
| Parameters | No data | No data |
| Tokenizer | GPT | No data |
| Knowledge cutoff | No data | No data |
| OpenRouter ID | openai/gpt-5.4 | No data |
| References | No data | No data |
This report only uses LMSpeed data for GPT-5.4 and Grok 3: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
GPT-5.4
GPT-5.4 is stronger in benchmark categories (Coding, Reasoning, Math) and operational dimensions (Average speed, Free providers, Provider coverage).
Grok 3
Grok 3 has these operational advantages: Cheapest input price, First-token latency.
Third-party benchmark profile synced into LMSpeed; only metrics available for both models are shown.
Compare benchmark category scores on a 0-100 scale. Select a category to inspect the gap.
Avg. score
GPT-5.4
57.4
Avg. score
Grok 3
48.1
GPT-5.4
GPT-5.4 leads by 14.9
GPT-5.4 leads by 8.0
GPT-5.4
GPT-5.4 leads by 10.2
No data
GPT-5.4
GPT-5.4
Metric-level scores with benchmark source, rank depth, confidence, error, and evaluation date where available.
GPT-5.4
winner67.0
Rank #19/84 · confidence 3 · eval date 2026-03-05
Grok 3
44.0
Rank #72/84 · confidence 1 · eval date 2025-02-19
GPT-5.4
winner$2.50/M
Rank #131/162 · confidence 4
Grok 3
$4.00/M
Rank #144/162 · confidence 4
GPT-5.4
winner$5.63/M
Rank #135/162 · confidence 4
Grok 3
$8.00/M
Rank #146/162 · confidence 4
GPT-5.4
winner$15.00/M
Rank #136/162 · confidence 4
Grok 3
$20.00/M
Rank #146/162 · confidence 4
GPT-5.4
winner10.6%
Rank #91/187 · confidence 4
Grok 3
5.1%
Rank #135/187 · confidence 4
GPT-5.4
winner74.8%
Rank #96/188 · confidence 4
Grok 3
69.3%
Rank #116/188 · confidence 4
GPT-5.4
winner47.1%
Rank #24/185 · confidence 4
Grok 3
36.8%
Rank #97/185 · confidence 4
GPT-5.4
winner47.6
Rank #7/47 · confidence 3 · eval date 2026-03-05
Grok 3
3.8
Rank #41/47 · confidence 1 · eval date 2025-02-19
GPT-5.4
winner65.9
Rank #17/56 · confidence 3 · eval date 2026-03-05
Grok 3
27.1
Rank #49/56 · confidence 1 · eval date 2025-02-19
Latest completed audits from shared providers, with four safety and integrity score groups plus report links.
| Provider | GPT-5.4 | Grok 3 |
|---|---|---|
Winner: GPT-5.4 | GPT-5.4 gpt-5.4 Audit score 93 1008486100 | Grok 3 grok-3 No audit yet |
Speed aggregates and input/output pricing share each provider row for real API selection and migration cost checks.
| Provider | GPT-5.4 | Grok 3 |
|---|---|---|
50 tests | GPT-5.4 speed / latency 50 tok/s / 7305ms input / output No data | Grok 3 speed / latency N/A / N/A input / output No data |
25 tests | GPT-5.4 speed / latency N/A / N/A input / output No data | Grok 3 speed / latency 39 tok/s / 2642ms input / output No data |
20 tests | GPT-5.4 speed / latency 49 tok/s / 5435ms input / output No data | Grok 3 speed / latency N/A / N/A input / output No data |
15 tests | GPT-5.4 speed / latency 41 tok/s / 6581ms input / output No data | Grok 3 speed / latency N/A / N/A input / output No data |
10 tests | GPT-5.4 speed / latency 51 tok/s / 2526ms input / output No data | Grok 3 speed / latency N/A / N/A input / output No data |
GPT-5.4 gpt-5.4 speed / latency No data input / output $0/request | Grok 3 grok-3 speed / latency No data input / output $0/request |
Weighted outcome: GPT-5.4. Benchmark capability categories carry 80%, while price, API performance, and availability carry 20%.
| Features | Text inputImage inputFile inputText outputTool callingStructured outputsJSON modeReasoning | None listed |
|---|
