Data points: 119
The readout for GPT-OSS and O3 Mini, before the detailed comparison sheet.
Decision read
GPT-OSS
GPT-OSS currently has the stronger profile, with verified wins split 6 to 0.
Evidence depth
119 data points
Includes 26 benchmark rows, 0 audit samples, and 9 provider examples.
Selection signal
Start with GPT-OSS
The charts below split 35 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.
Model compare GPT-OSS vs O3 Minigpt-oss-vs-o3-mini | Model A GPT-OSS | Model B O3 Mini |
|---|---|---|
| Overall leader | Leading | Contender |
| Verified metric wins | 6 wins | 0 wins |
| Where it leads | Cheapest input price, Average speed, First-token latency, Free providers, Provider coverage, Recent tests |
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-OSS
57.1
Avg. score
O3 Mini
59.2
Selected category
Instruction following
O3 Mini leads by 24.9
Metric-level scores with benchmark source, rank depth, confidence, error, and evaluation date where available.
GPT-OSS
34.0
Rank #60/82 · confidence 1 · eval date 2025-08-05
O3 Mini
winner55.0
Rank #43/82 · confidence 1 · eval date 2025-01-31
GPT-OSS
winner324.3 tok/s
Rank #1/78 · confidence 4
O3 Mini
224.5 tok/s
Rank #4/78 · confidence 4
GPT-OSS
winner0.53 s
Rank #6/78 · confidence 4
O3 Mini
15.30 s
Rank #65/78 · confidence 4
GPT-OSS
winner6.70 s
Rank #39/78 · confidence 4
O3 Mini
15.30 s
Rank #48/78 · confidence 4
GPT-OSS
winner$0.262/M
Rank #13/95 · confidence 4
O3 Mini
$1.93/M
Rank #57/95 · confidence 4
GPT-OSS
winner$0.150/M
Rank #13/95 · confidence 4
O3 Mini
$1.10/M
Rank #58/95 · confidence 4
GPT-OSS
winner$0.600/M
Rank #15/95 · confidence 4
O3 Mini
$4.40/M
Rank #56/95 · confidence 4
GPT-OSS
30.2
Rank #47/57 · confidence 1 · eval date 2025-08-05
O3 Mini
winner68.0
Rank #19/57 · confidence 1 · eval date 2025-01-31
GPT-OSS
77.5%
Rank #53/74 · confidence 4
O3 Mini
winner80.2%
Rank #42/74 · confidence 4
GPT-OSS
5.2%
Rank #73/103 · confidence 4
O3 Mini
winner12.3%
Rank #52/103 · confidence 4
GPT-OSS
67.2%
Rank #73/103 · confidence 4
O3 Mini
winner77.3%
Rank #54/103 · confidence 4
GPT-OSS
70.7%
Rank #25/70 · confidence 4
O3 Mini
winner73.4%
Rank #23/70 · confidence 4
GPT-OSS
38.9
Rank #40/63 · confidence 1 · eval date 2025-08-05
O3 Mini
winner39.9
Rank #39/63 · confidence 1 · eval date 2025-01-31
GPT-OSS
winner28.6
Rank #41/61 · confidence 1 · eval date 2025-08-05
O3 Mini
17.9
Rank #54/61 · confidence 1 · eval date 2025-01-31
GPT-OSS
winner23.5
Rank #43/59 · confidence 1 · eval date 2025-08-05
O3 Mini
6.8
Rank #54/59 · confidence 1 · eval date 2025-01-31
GPT-OSS
21.2
Rank #61/69 · confidence 1 · eval date 2025-08-05
O3 Mini
winner48.5
Rank #45/69 · confidence 1 · eval date 2025-01-31
GPT-OSS
36.0%
Rank #65/101 · confidence 4
O3 Mini
winner39.8%
Rank #49/101 · confidence 4
GPT-OSS
winner18.5
Rank #33/63 · confidence 1 · eval date 2025-08-05
O3 Mini
8.7
Rank #42/63 · confidence 1 · eval date 2025-01-31
GPT-OSS
44.5
Rank #52/67 · confidence 1 · eval date 2025-08-05
O3 Mini
winner60.7
Rank #36/67 · confidence 1 · eval date 2025-01-31
GPT-OSS
winner78.2
Rank #40/63 · confidence 1 · eval date 2025-08-05
O3 Mini
74.8
Rank #44/63 · confidence 1 · eval date 2025-01-31
GPT-OSS
winner23.8
Rank #43/66 · confidence 1 · eval date 2025-08-05
O3 Mini
19.0
Rank #51/66 · confidence 1 · eval date 2025-01-31
GPT-OSS
35.3
Rank #39/50 · confidence 1 · eval date 2025-08-05
O3 Mini
winner44.8
Rank #35/50 · confidence 1 · eval date 2025-01-31
GPT-OSS
18.9
Rank #53/60 · confidence 1 · eval date 2025-08-05
O3 Mini
winner65.6
Rank #26/60 · confidence 1 · eval date 2025-01-31
GPT-OSS
38.5
Rank #52/56 · confidence 1 · eval date 2025-08-05
O3 Mini
winner85.3
Rank #13/56 · confidence 1 · eval date 2025-01-31
GPT-OSS
34.6
Rank #53/69 · confidence 1 · eval date 2025-08-05
O3 Mini
winner60.6
Rank #24/69 · confidence 1 · eval date 2025-01-31
GPT-OSS
winner65.8
Rank #39/58 · confidence 1 · eval date 2025-08-05
O3 Mini
28.7
Rank #51/58 · confidence 1 · eval date 2025-01-31
Latest completed audits from shared providers, with four safety and integrity score groups plus report links.
| Provider | GPT-OSS | 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-OSS | O3 Mini |
|---|---|---|
40 tests | GPT-OSS speed / latency 41 tok/s / 2851ms input / output No data | O3 Mini |
This report only uses LMSpeed data for GPT-OSS and O3 Mini: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Guidance | GPT-OSS | O3 Mini |
|---|---|---|
| When to choose each model | GPT-OSS GPT-OSS is stronger when you prioritize Cheapest input price, Average speed, First-token latency, Free providers, Provider coverage, Recent tests. | O3 Mini O3 Mini does not clearly lead on the verified metrics here, so check provider-specific pricing before choosing. |
TL;DR: GPT-OSS leads across 119 verifiable data points, including pricing, speed, latency, benchmarks, and provider examples.
Continue from GPT-OSS vs O3 Mini into nearby model comparisons with enough verified LMSpeed data.
| No data |
| Model metadata | GPT-OSS exposes 131.1K tokens; notable signals: Text input, Text output, Tool calling, Reasoning. | O3 Mini exposes 200K tokens; notable signals: Text input, File input, Text output, Tool calling. |
|---|---|---|
| Developer | No data | OpenAI |
| Context window | 131.1K tokens | 200K tokens |
| Max output | 131.1K tokens | 100K tokens |
| Released | Aug 2025 | Feb 2025 |
| Modalities | Input Text Output Text | Input TextFile Output Text |
| Features | Text inputText outputTool callingReasoning | Text inputFile inputText outputTool callingStructured outputsJSON modeReasoning |
| Parameters | 120B | No data |
| Tokenizer | GPT | GPT |
| Knowledge cutoff | 2024-06-30 | 2023-10-31 |
| OpenRouter ID | openai/gpt-oss-120b:free | openai/o3-mini-high |
| References | No data | No data |
speed / latency
N/A / N/A
input / output
No data
Rnglg2 API20 tests | GPT-OSS speed / latency 338 tok/s / 2317ms input / output No data | O3 Mini speed / latency N/A / N/A input / output No data |
|---|
WSocket AI10 tests | GPT-OSS speed / latency 125 tok/s / 2302ms input / output No data | O3 Mini speed / latency N/A / N/A input / output No data |
|---|
ZetaTechs API6 tests | GPT-OSS speed / latency N/A / N/A input / output No data | O3 Mini speed / latency 44 tok/s / 17418ms input / output No data |
|---|
N1N5 tests | GPT-OSS speed / latency N/A / N/A input / output No data | O3 Mini speed / latency 117 tok/s / 4809ms input / output No data |
|---|
GPT-OSS gpt-oss-120b speed / latency No data input / output $0.012/M / $0.103/M | O3 Mini o3-mini-medium speed / latency No data input / output $0.045/M / $0.181/M |
GPT-OSS openai/gpt-oss-20b speed / latency No data input / output $1.03/M / $1.03/M | O3 Mini o3-mini-high speed / latency No data input / output $0.021/M / $0.082/M |
GPT-OSS gpt-oss-120b speed / latency No data input / output $0.027/M / $0.128/M | O3 Mini o3-mini-2025-01-31 speed / latency No data input / output $71.92/M / $287.67/M |
GPT-OSS gpt-oss-20b speed / latency No data input / output $0.027/M / $0.110/M | O3 Mini o3-mini-high-all speed / latency No data input / output $10.27/M / $41.10/M |
Rankings are based on community-submitted tests and periodic health probes. Advisory only, not official data.
