Data points: 78
Model compare
GPT-3.5 Turbo vs O3 Mini
The readout for GPT-3.5 Turbo and O3 Mini, before the detailed comparison sheet.
Key Takeaways
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 44.7 to 55.3.
Evidence depth
78 data points
Includes 6 benchmark rows, 0 audit samples, and 10 provider examples.
Selection signal
Start with O3 Mini
The charts below split 16 high-signal samples across speed, scores, and audit health.
Change comparison
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.
Comparison sheet
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 | 44.7 pts | 55.3 pts |
| Benchmark category leads | 1 categories | 2 categories |
| Operational advantages | Cheapest input price, Average speed, First-token latency, Provider coverage | No data |
| Context window | 16.4K tokens | 200K tokens |
| Max output | 4.1K tokens | 100K tokens |
| Modalities | Input Text Output Text | Input TextFile Output Text |
| Features | Text inputText outputTool callingStructured outputsJSON mode | Text inputFile inputText outputTool callingStructured outputsJSON modeReasoning |
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 metadata
Model metadata
| 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 |
When to choose each model
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 (Cheapest input price, Average speed, First-token latency, Provider coverage).
O3 Mini
O3 Mini leads these benchmark categories: Reasoning, Math.
Benchmark score comparison
Third-party benchmark profile synced into LMSpeed; only metrics available for both models are shown.
Category performance
Compare benchmark category scores on a 0-100 scale. Select a category to inspect the gap.
- Model A coverage
- 3 / 8
- Model B coverage
- 6 / 8
- Shared
- 3 shared categories
Avg. score
GPT-3.5 Turbo
40
Avg. score
O3 Mini
48.6
Agents
O3 Mini
Coding
GPT-3.5 Turbo leads by 8.3
Reasoning
O3 Mini leads by 16.0
Knowledge
O3 Mini
Math
O3 Mini leads by 20.7
Multilingual
No data
Multimodal
No data
Instruction following
O3 Mini
Professional benchmark details
Metric-level scores with benchmark source, rank depth, confidence, error, and evaluation date where available.
Professional benchmark details
Metric-level scores with benchmark source, rank depth, confidence, error, and evaluation date where available.
GPT-3.5 Turbo
winner$1.50/M
Rank #62/180 · confidence 4
O3 Mini
$4.40/M
Rank #115/180 · confidence 4
GPT-3.5 Turbo
winner$0.750/M
Rank #70/180 · confidence 4
O3 Mini
$1.93/M
Rank #115/180 · confidence 4
GPT-3.5 Turbo
winner$0.500/M
Rank #82/180 · confidence 4
O3 Mini
$1.10/M
Rank #114/180 · confidence 4
GPT-3.5 Turbo
46.2%
Rank #128/129 · confidence 4
O3 Mini
winner79.1%
Rank #70/129 · confidence 4
GPT-3.5 Turbo
29.7%
Rank #211/212 · confidence 4
O3 Mini
winner74.8%
Rank #117/212 · confidence 4
GPT-3.5 Turbo
44.1%
Rank #70/73 · confidence 4
O3 Mini
winner97.3%
Rank #11/73 · confidence 4
API audit comparison
Latest completed audits from shared providers, with four safety and integrity score groups plus report links.
API audit comparison
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. | ||
Provider examples
Speed aggregates and input/output pricing share each provider row for real API selection and migration cost checks.
Provider examples
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 |
|---|---|---|
ZetaTechs API6 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 |
EasyMore5 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 |
N1N5 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 |
42公益站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 |
AAAI0 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-0613 speed / latency No data input / output $0/request | O3 Mini o3-mini speed / latency No data input / output $0/request | |
GPT-3.5 Turbo gpt-3.5-turbo-0125 speed / latency No data input / output $0.062/M/$0.123/M | O3 Mini o3-mini-all speed / latency No data input / output $0.0062/request | |
GPT-3.5 Turbo gpt-3.5-turbo-0125 speed / latency No data input / output $0.055/M/$0.110/M | O3 Mini o3-mini-high-all speed / latency No data input / output $0.011/request | |
GPT-3.5 Turbo gpt-3.5-turbo-0125 speed / latency No data input / output $0.055/M/$0.164/M | O3 Mini o3-mini-high speed / latency No data input / output $0.011/request | |
GPT-3.5 Turbo gpt-3.5-turbo-0125 speed / latency No data input / output $0.055/M/$0.110/M | O3 Mini o3-mini-high-all speed / latency No data input / output $0.011/request |
FAQ
Weighted outcome: O3 Mini. Benchmark capability categories carry 80%, while price, API performance, and availability carry 20%.
- Why is this comparison indexable?
- It has 6 verifiable comparison points, and both models have pricing or benchmark data.
- Are missing metrics invented?
- No. Metrics without LMSpeed data are omitted from this report.