Data points: 84
Model compare
The readout for GPT-3.5 Turbo and O3 Mini, before the detailed comparison sheet.
Weighted outcome: O3 Mini. Benchmark capability categories carry 80%, while price, API performance, and availability carry 20%.
Decision read
O3 Mini
O3 Mini has the higher weighted result; Model A / B score 42.7 to 57.3.
Evidence depth
84 data points
Includes 9 benchmark rows, 0 audit samples, and 6 provider examples.
Selection signal
Start with O3 Mini
The charts below split 15 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-3.5 Turbo and O3 Mini: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Model compare | GPT-3.5 Turbo | O3 Mini |
|---|---|---|
| Overall leader | Contender | Leading |
| Weighted overall score | 42.7 pts | 57.3 pts |
| Benchmark category leads | 1 categories | 2 categories |
| Operational advantages | Average speed, First-token latency, Free providers, Provider coverage | Cheapest input price |
| Context window | 16.4K tokens | 200K tokens |
| Max output | 4.1K tokens | 100K tokens |
| Modalities | Input Text Output Text | Input 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-3.5 Turbo | O3 Mini |
|---|---|---|
| Developer | OpenAI | OpenAI |
| Released | Jan 2024 | Feb 2025 |
| Parameters | No data | No data |
| Tokenizer | GPT | GPT |
| Knowledge cutoff | 2021-09-30 | 2023-10-31 |
| OpenRouter ID | openai/gpt-3.5-turbo | openai/o3-mini |
| References | No data | No data |
This report only uses LMSpeed data for GPT-3.5 Turbo and O3 Mini: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
GPT-3.5 Turbo
GPT-3.5 Turbo is stronger in benchmark categories (Coding) and operational dimensions (Average speed, First-token latency, Free providers, Provider coverage).
O3 Mini
O3 Mini is stronger in benchmark categories (Reasoning, Math) and operational dimensions (Cheapest input price).
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-3.5 Turbo
40
Avg. score
O3 Mini
49.3
O3 Mini
GPT-3.5 Turbo leads by 10.7
O3 Mini leads by 16.3
O3 Mini
O3 Mini leads by 21.3
O3 Mini
O3 Mini
O3 Mini
Metric-level scores with benchmark source, rank depth, confidence, error, and evaluation date where available.
GPT-3.5 Turbo
138.2 tok/s
Rank #39/139 · confidence 4
O3 Mini
winner214.7 tok/s
Rank #15/139 · confidence 4
GPT-3.5 Turbo
winner0.70 s
Rank #25/139 · confidence 4
O3 Mini
7.10 s
Rank #66/139 · confidence 4
GPT-3.5 Turbo
winner0.70 s
Rank #34/139 · confidence 4
O3 Mini
7.10 s
Rank #111/139 · confidence 4
GPT-3.5 Turbo
winner$1.50/M
Rank #54/163 · confidence 4
O3 Mini
$4.40/M
Rank #99/163 · confidence 4
GPT-3.5 Turbo
winner$0.750/M
Rank #60/163 · confidence 4
O3 Mini
$1.93/M
Rank #100/163 · confidence 4
GPT-3.5 Turbo
winner$0.500/M
Rank #70/163 · confidence 4
O3 Mini
$1.10/M
Rank #104/163 · confidence 4
GPT-3.5 Turbo
46.2%
Rank #124/125 · confidence 4
O3 Mini
winner79.1%
Rank #69/125 · confidence 4
GPT-3.5 Turbo
29.7%
Rank #186/187 · confidence 4
O3 Mini
winner74.8%
Rank #96/187 · confidence 4
GPT-3.5 Turbo
44.1%
Rank #69/72 · confidence 4
O3 Mini
winner97.3%
Rank #11/72 · confidence 4
Latest completed audits from shared providers, with four safety and integrity score groups plus report links.
| Provider | GPT-3.5 Turbo | O3 Mini |
|---|---|---|
| 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-3.5 Turbo | O3 Mini |
|---|---|---|
6 tests | GPT-3.5 Turbo speed / latency N/A / N/A input / output No data | O3 Mini speed / latency 44 tok/s / 17418ms input / output No data |
5 tests | GPT-3.5 Turbo speed / latency 54 tok/s / 9591ms input / output No data | O3 Mini speed / latency N/A / N/A input / output No data |
5 tests | GPT-3.5 Turbo speed / latency N/A / N/A input / output No data | O3 Mini speed / latency 117 tok/s / 4809ms input / output No data |
0 tests | GPT-3.5 Turbo speed / latency N/A / N/A input / output No data | O3 Mini speed / latency N/A / N/A input / output No data |
0 tests | GPT-3.5 Turbo speed / latency N/A / N/A input / output No data | O3 Mini speed / latency N/A / N/A input / output No data |
GPT-3.5 Turbo gpt-3.5-turbo-16k speed / latency No data input / output $0/request | O3 Mini o3-mini-high speed / latency No data input / output $1.47/request |
Weighted outcome: O3 Mini. Benchmark capability categories carry 80%, while price, API performance, and availability carry 20%.
Output
| Features | Text inputText outputTool callingStructured outputsJSON mode | Text inputFile inputText outputTool callingStructured outputsJSON modeReasoning |
|---|
