Data points: 103
Model compare
The readout for GPT-5.4 and Grok 4.6, 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 56 to 44.
Evidence depth
103 data points
Includes 24 benchmark rows, 0 audit samples, and 5 provider examples.
Selection signal
Start with GPT-5.4
The charts below split 29 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 4.6: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Model compare | GPT-5.4 | Grok 4.6 |
|---|---|---|
| Overall leader | Leading | Contender |
| Weighted overall score | 56.0 pts | 44.0 pts |
| Benchmark category leads | 2 categories | 2 categories |
| Operational advantages | Cheapest input price, First-token latency, Free providers, Provider coverage | Average speed |
| Context window | 1.1M tokens | 500K tokens |
| 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 4.6 |
|---|---|---|
| Developer | OpenAI | SpaceXAI |
| Released | Mar 2026 | Aug 2026 |
| Parameters | No data | No data |
| Tokenizer | GPT | Grok |
| Knowledge cutoff | No data | No data |
| OpenRouter ID | openai/gpt-5.4 | x-ai/grok-4.6 |
| References | No data | No data |
This report only uses LMSpeed data for GPT-5.4 and Grok 4.6: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
GPT-5.4
GPT-5.4 is stronger in benchmark categories (Coding, Knowledge) and operational dimensions (Cheapest input price, First-token latency, Free providers, Provider coverage).
Grok 4.6
Grok 4.6 is stronger in benchmark categories (Agents, Reasoning) and operational dimensions (Average speed).
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
57.2
Avg. score
Grok 4.6
60.6
Grok 4.6 leads by 5.0
GPT-5.4 leads by 2.1
Grok 4.6 leads by 3.6
GPT-5.4 leads by 0.1
GPT-5.4
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
$15.00/M
Rank #153/178 · confidence 4
Grok 4.6
winner$6.00/M
Rank #119/178 · confidence 4
GPT-5.4
$5.63/M
Rank #152/178 · confidence 4
Grok 4.6
winner$3.00/M
Rank #125/178 · confidence 4
GPT-5.4
$2.50/M
Rank #148/178 · confidence 4
Grok 4.6
winner$2.00/M
Rank #137/178 · confidence 4
GPT-5.4
74.8%
Rank #114/208 · confidence 4
Grok 4.6
winner94.9%
Rank #1/208 · confidence 4
GPT-5.4
winner23.4
Rank #8/82 · confidence 3 · eval date 2026-03-05
Grok 4.6
17.1
Rank #16/82 · confidence 1 · eval date 2026-08-12
GPT-5.4
winner77.7
Rank #14/99 · confidence 3 · eval date 2026-03-05
Grok 4.6
75.0
Rank #26/99 · confidence 1 · eval date 2026-08-12
GPT-5.4
11.3%
Rank #107/206 · confidence 4
Grok 4.6
winner42.9%
Rank #15/206 · confidence 4
GPT-5.4
38.5
Rank #9/25 · confidence 3 · eval date 2026-03-05
Grok 4.6
winner58.3
Rank #1/25 · confidence 1 · eval date 2026-08-12
GPT-5.4
71.0
Rank #16/69 · confidence 3 · eval date 2026-03-05
Grok 4.6
winner76.8
Rank #3/69 · confidence 1 · eval date 2026-08-12
GPT-5.4
winner56.6
Rank #5/107 · confidence 3 · eval date 2026-03-05
Grok 4.6
53.6
Rank #15/107 · confidence 1 · eval date 2026-08-12
GPT-5.4
47.1%
Rank #33/202 · confidence 4
Grok 4.6
winner53.6%
Rank #13/202 · confidence 4
GPT-5.4
92.0
Rank #15/107 · confidence 3 · eval date 2026-03-05
Grok 4.6
winner94.9
Rank #1/107 · confidence 1 · eval date 2026-08-12
GPT-5.4
53.1
Rank #15/110 · confidence 3 · eval date 2026-03-05
Grok 4.6
winner60.9
Rank #3/110 · confidence 1 · eval date 2026-08-12
GPT-5.4
5.8
Rank #22/38 · confidence 3 · eval date 2026-03-05
Grok 4.6
winner30.5
Rank #4/38 · confidence 1 · eval date 2026-08-12
GPT-5.4
winner43.7
Rank #10/107 · confidence 3 · eval date 2026-03-05
Grok 4.6
42.9
Rank #12/107 · confidence 1 · eval date 2026-08-12
GPT-5.4
winner50.8
Rank #11/100 · confidence 3 · eval date 2026-03-05
Grok 4.6
48.2
Rank #15/100 · confidence 1 · eval date 2026-08-12
GPT-5.4
winner91.7
Rank #13/100 · confidence 3 · eval date 2026-03-05
Grok 4.6
34.3
Rank #90/100 · confidence 1 · eval date 2026-08-12
GPT-5.4
53.2
Rank #7/9 · confidence 3 · eval date 2026-03-05
Grok 4.6
winner63.2
Rank #4/9 · confidence 1 · eval date 2026-08-12
GPT-5.4
44.2
Rank #17/63 · confidence 3 · eval date 2026-03-05
Grok 4.6
winner58.7
Rank #2/63 · confidence 1 · eval date 2026-08-12
GPT-5.4
44.7
Rank #18/60 · confidence 3 · eval date 2026-03-05
Grok 4.6
winner62.5
Rank #2/60 · confidence 1 · eval date 2026-08-12
GPT-5.4
1394.0
Rank #18/66 · confidence 3 · eval date 2026-03-05
Grok 4.6
winner1753.0
Rank #2/66 · confidence 1 · eval date 2026-08-12
GPT-5.4
75.8
Rank #20/67 · confidence 3 · eval date 2026-03-05
Grok 4.6
winner88.9
Rank #5/67 · confidence 1 · eval date 2026-08-12
GPT-5.4
79.0
Rank #6/15 · confidence 3 · eval date 2026-03-05
Grok 4.6
winner79.7
Rank #5/15 · confidence 1 · eval date 2026-08-12
GPT-5.4
73.6
Rank #11/13 · confidence 3 · eval date 2026-03-05
Grok 4.6
winner81.6
Rank #7/13 · confidence 1 · eval date 2026-08-12
Latest completed audits from shared providers, with four safety and integrity score groups plus report links.
| Provider | GPT-5.4 | Grok 4.6 |
|---|---|---|
| No completed audits are available from shared providers yet. | ||
Speed aggregates and input/output pricing share each provider row for real API selection and migration cost checks.
| Provider | GPT-5.4 | Grok 4.6 |
|---|---|---|
10 tests | GPT-5.4 speed / latency 50 tok/s / 1423ms input / output No data | Grok 4.6 speed / latency 97 tok/s / 10460ms input / output No data |
5 tests | GPT-5.4 gpt-5.4 speed / latency 21 tok/s / 1733ms input / output $1.23/M/$7.35/M | Grok 4.6 grok-4.6 speed / latency N/A / N/A input / output $0.375/M |
0 tests | GPT-5.4 speed / latency N/A / N/A input / output No data | Grok 4.6 speed / latency N/A / N/A input / output No data |
0 tests | GPT-5.4 speed / latency N/A / N/A input / output No data | Grok 4.6 speed / latency N/A / N/A input / output No data |
0 tests | GPT-5.4 speed / latency N/A / N/A input / output No data | Grok 4.6 speed / latency N/A / N/A input / output No data |
Weighted outcome: GPT-5.4. Benchmark capability categories carry 80%, while price, API performance, and availability carry 20%.
Input
Output
| Features | Text inputImage inputFile inputText outputTool callingStructured outputsJSON modeReasoning | Text inputImage inputFile inputText outputTool callingStructured outputsJSON modeReasoning |
|---|
