Data points: 76
Model compare
The readout for GPT-4o and O3 Pro, before the detailed comparison sheet.
Weighted outcome: O3 Pro. Benchmark capability categories carry 80%, while price, API performance, and availability carry 20%.
Decision read
O3 Pro
O3 Pro has the higher weighted result; Model A / B score 20 to 80.
Evidence depth
76 data points
Includes 6 benchmark rows, 0 audit samples, and 6 provider examples.
Selection signal
Start with O3 Pro
The charts below split 12 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-4o and O3 Pro: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Model compare | GPT-4o | O3 Pro |
|---|---|---|
| Overall leader | Contender | Leading |
| Weighted overall score | 20.0 pts | 80.0 pts |
| Benchmark category leads | 0 categories | 2 categories |
| Operational advantages | Cheapest input price, Free providers, Provider coverage | No data |
| Context window | 128K tokens | 200K tokens |
| Max output | 16.4K 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-4o | O3 Pro |
|---|---|---|
| Developer | OpenAI | OpenAI |
| Released | Nov 2024 | Jun 2025 |
| Parameters | No data | No data |
| Tokenizer | GPT | GPT |
| Knowledge cutoff | 2023-10-31 | 2024-06-30 |
| OpenRouter ID | openai/gpt-4o | openai/o3-pro |
| References | No data | No data |
This report only uses LMSpeed data for GPT-4o and O3 Pro: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
GPT-4o
GPT-4o has these operational advantages: Cheapest input price, Free providers, Provider coverage.
O3 Pro
O3 Pro leads these benchmark categories: Reasoning, 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-4o
43.2
Avg. score
O3 Pro
57.7
GPT-4o
GPT-4o
O3 Pro leads by 14.1
O3 Pro leads by 11.0
GPT-4o
No data
No data
GPT-4o
Metric-level scores with benchmark source, rank depth, confidence, error, and evaluation date where available.
GPT-4o
winner$10.00/M
Rank #120/162 · confidence 4
O3 Pro
$80.00/M
Rank #160/162 · confidence 4
GPT-4o
winner$4.38/M
Rank #127/162 · confidence 4
O3 Pro
$35.00/M
Rank #159/162 · confidence 4
GPT-4o
winner$2.50/M
Rank #131/162 · confidence 4
O3 Pro
$20.00/M
Rank #159/162 · confidence 4
GPT-4o
54.3%
Rank #156/188 · confidence 4
O3 Pro
winner84.5%
Rank #48/188 · confidence 4
GPT-4o
54.3
Rank #91/96 · confidence 1 · eval date 2024-05-13
O3 Pro
winner84.5
Rank #47/96 · confidence 1 · eval date 2025-04-16
GPT-4o
11.2
Rank #90/99 · confidence 1 · eval date 2024-05-13
O3 Pro
winner32.5
Rank #54/99 · 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-4o | O3 Pro |
|---|---|---|
| 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-4o | O3 Pro |
|---|---|---|
20 tests | GPT-4o speed / latency 88 tok/s / 1593ms input / output No data | O3 Pro speed / latency N/A / N/A input / output No data |
5 tests | GPT-4o speed / latency 48 tok/s / 13138ms input / output No data | O3 Pro speed / latency N/A / N/A input / output No data |
5 tests | GPT-4o speed / latency 58 tok/s / 2583ms input / output No data | O3 Pro speed / latency N/A / N/A input / output No data |
3 tests | GPT-4o speed / latency 40 tok/s / 2993ms input / output No data | O3 Pro speed / latency N/A / N/A input / output No data |
0 tests | GPT-4o speed / latency N/A / N/A input / output No data | O3 Pro speed / latency N/A / N/A input / output No data |
GPT-4o gpt-4o-2024-08-06 speed / latency No data input / output $0/request | O3 Pro o3-pro speed / latency No data input / output $11.76/request |
Weighted outcome: O3 Pro. Benchmark capability categories carry 80%, while price, API performance, and availability carry 20%.
Input
Output
| Features | Text inputImage inputFile inputText outputTool callingStructured outputsJSON modeWeb search | Text inputImage inputFile inputText outputTool callingStructured outputsJSON modeReasoning |
|---|
