Data points: 80
Model compare
The readout for GPT-5.4 and O3 Pro, 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 60 to 40.
Evidence depth
80 data points
Includes 6 benchmark rows, 1 audit samples, and 6 provider examples.
Selection signal
Start with GPT-5.4
The charts below split 13 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 O3 Pro: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Model compare | GPT-5.4 | O3 Pro |
|---|---|---|
| Overall leader | Leading | Contender |
| Weighted overall score | 60.0 pts | 40.0 pts |
| Benchmark category leads | 1 categories | 1 categories |
| Operational advantages | Cheapest input price, Free providers, Provider coverage | No data |
| Context window | 1.1M tokens | 200K tokens |
| Max output | 128K tokens | 100K tokens |
| 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 | O3 Pro |
|---|---|---|
| Developer | OpenAI | OpenAI |
| Released | Mar 2026 | Jun 2025 |
| Parameters | No data | No data |
| Tokenizer | GPT | GPT |
| Knowledge cutoff | No data | 2024-06-30 |
| OpenRouter ID | openai/gpt-5.4 | openai/o3-pro |
| References | No data | No data |
This report only uses LMSpeed data for GPT-5.4 and O3 Pro: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
GPT-5.4
GPT-5.4 is stronger in benchmark categories (Reasoning) and operational dimensions (Cheapest input price, Free providers, Provider coverage).
O3 Pro
O3 Pro leads these benchmark categories: Knowledge.
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
O3 Pro
57.7
GPT-5.4
GPT-5.4
GPT-5.4 leads by 2.1
O3 Pro leads by 0.8
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
winner$2.50/M
Rank #131/162 · confidence 4
O3 Pro
$20.00/M
Rank #159/162 · confidence 4
GPT-5.4
winner$5.63/M
Rank #135/162 · confidence 4
O3 Pro
$35.00/M
Rank #159/162 · confidence 4
GPT-5.4
winner$15.00/M
Rank #136/162 · confidence 4
O3 Pro
$80.00/M
Rank #160/162 · confidence 4
GPT-5.4
74.8%
Rank #96/188 · confidence 4
O3 Pro
winner84.5%
Rank #48/188 · confidence 4
GPT-5.4
winner51.4
Rank #10/99 · confidence 3 · eval date 2026-03-05
O3 Pro
32.5
Rank #54/99 · confidence 1 · eval date 2025-04-16
GPT-5.4
winner92.0
Rank #11/96 · confidence 3 · eval date 2026-03-05
O3 Pro
84.5
Rank #47/96 · confidence 1 · eval date 2025-04-16
Latest completed audits from shared providers, with four safety and integrity score groups plus report links.
| Provider | GPT-5.4 | O3 Pro |
|---|---|---|
Winner: GPT-5.4 | GPT-5.4 gpt-5.4 Audit score 93 1008486100 | O3 Pro o3-pro-2025-06-10 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 | O3 Pro |
|---|---|---|
20 tests | GPT-5.4 speed / latency 51 tok/s / 4032ms input / output No data | O3 Pro speed / latency N/A / N/A input / output No data |
10 tests | GPT-5.4 speed / latency 55 tok/s / 2903ms input / output No data | O3 Pro speed / latency N/A / N/A input / output No data |
10 tests | GPT-5.4 speed / latency 54 tok/s / 1369ms input / output No data | O3 Pro speed / latency N/A / N/A input / output No data |
10 tests | GPT-5.4 speed / latency 51 tok/s / 1093ms input / output No data | O3 Pro speed / latency N/A / N/A input / output No data |
10 tests | GPT-5.4 speed / latency 37 tok/s / 1721ms input / output No data | O3 Pro speed / latency N/A / N/A input / output No data |
GPT-5.4 gpt-5.4 speed / latency No data input / output $0/request | O3 Pro o3-pro speed / latency No data input / output $11.76/request |
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 |
|---|
