Data points: 117
The readout for GPT-5.3 Codex and Hy3 preview, before the detailed comparison sheet.
Decision read
GPT-5.3 Codex
GPT-5.3 Codex currently has the stronger profile, with verified wins split 4 to 0.
Evidence depth
117 data points
Includes 28 benchmark rows, 0 audit samples, and 6 provider examples.
Selection signal
Start with GPT-5.3 Codex
The charts below split 34 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-5.3 Codex vs Hy3 previewgpt-5-3-codex-vs-hy3-preview | Model A GPT-5.3 Codex | Model B Hy3 preview |
|---|---|---|
| Overall leader | Leading | Contender |
| Verified metric wins | 4 wins | 0 wins |
| Where it leads | Cheapest input price, 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-5.3 Codex
67.6
Avg. score
Hy3 preview
54.6
Selected category
Reasoning
GPT-5.3 Codex leads by 12.7
Metric-level scores with benchmark source, rank depth, confidence, error, and evaluation date where available.
GPT-5.3 Codex
winner82.0
Rank #8/96 · confidence 1 · eval date 2026-02-05
Hy3 preview
55.0
Rank #50/96 · confidence 2 · eval date 2026-04-23
GPT-5.3 Codex
89.9 tok/s
Rank #55/113 · confidence 4
Hy3 preview
winner203.9 tok/s
Rank #13/113 · confidence 4
GPT-5.3 Codex
87.44 s
Rank #110/113 · confidence 4
Hy3 preview
winner11.59 s
Rank #64/113 · confidence 4
GPT-5.3 Codex
87.44 s
Rank #112/113 · confidence 4
Hy3 preview
winner1.78 s
Rank #80/113 · confidence 4
GPT-5.3 Codex
$1.75/M
Rank #104/138 · confidence 4
Hy3 preview
winner$0.123/M
Rank #15/138 · confidence 4
GPT-5.3 Codex
$4.81/M
Rank #113/138 · confidence 4
Hy3 preview
winner$0.200/M
Rank #16/138 · confidence 4
GPT-5.3 Codex
$14.00/M
Rank #113/138 · confidence 4
Hy3 preview
winner$0.430/M
Rank #19/138 · confidence 4
GPT-5.3 Codex
winner74.0
Rank #4/67 · confidence 1 · eval date 2026-02-05
Hy3 preview
54.7
Rank #46/67 · confidence 2 · eval date 2026-04-23
GPT-5.3 Codex
winner16.9
Rank #6/54 · confidence 1 · eval date 2026-02-05
Hy3 preview
4.6
Rank #21/54 · confidence 2 · eval date 2026-04-23
GPT-5.3 Codex
winner91.5%
Rank #6/152 · confidence 4
Hy3 preview
86.7%
Rank #22/152 · confidence 4
GPT-5.3 Codex
winner39.9%
Rank #8/150 · confidence 4
Hy3 preview
25.5%
Rank #29/150 · confidence 4
GPT-5.3 Codex
winner85.0
Rank #4/36 · confidence 1 · eval date 2026-02-05
Hy3 preview
74.4
Rank #22/36 · confidence 2 · eval date 2026-04-23
GPT-5.3 Codex
winner53.0
Rank #5/69 · confidence 1 · eval date 2026-02-05
Hy3 preview
34.1
Rank #35/69 · confidence 2 · eval date 2026-04-23
GPT-5.3 Codex
winner83.6
Rank #7/83 · confidence 1 · eval date 2026-02-05
Hy3 preview
66.5
Rank #41/83 · confidence 2 · eval date 2026-04-23
GPT-5.3 Codex
winner53.2%
Rank #7/149 · confidence 4
Hy3 preview
41.2%
Rank #40/149 · confidence 4
GPT-5.3 Codex
winner53.2
Rank #8/74 · confidence 1 · eval date 2026-02-05
Hy3 preview
41.2
Rank #36/74 · confidence 2 · eval date 2026-04-23
GPT-5.3 Codex
winner51.8
Rank #3/68 · confidence 1 · eval date 2026-02-05
Hy3 preview
28.0
Rank #34/68 · confidence 2 · eval date 2026-04-23
GPT-5.3 Codex
winner91.5
Rank #4/74 · confidence 1 · eval date 2026-02-05
Hy3 preview
86.7
Rank #23/74 · confidence 2 · eval date 2026-04-23
GPT-5.3 Codex
winner89.3
Rank #4/79 · confidence 1 · eval date 2026-02-05
Hy3 preview
53.4
Rank #49/79 · confidence 2 · eval date 2026-04-23
GPT-5.3 Codex
winner39.9
Rank #5/74 · confidence 1 · eval date 2026-02-05
Hy3 preview
25.5
Rank #27/74 · confidence 2 · eval date 2026-04-23
GPT-5.3 Codex
winner44.3
Rank #6/77 · confidence 1 · eval date 2026-02-05
Hy3 preview
33.6
Rank #38/77 · confidence 2 · eval date 2026-04-23
GPT-5.3 Codex
86.9
Rank #18/68 · confidence 1 · eval date 2026-02-05
Hy3 preview
86.9
Rank #18/68 · confidence 2 · eval date 2026-04-23
GPT-5.3 Codex
winner87.8
Rank #7/66 · confidence 1 · eval date 2026-02-05
Hy3 preview
39.9
Rank #60/66 · confidence 2 · eval date 2026-04-23
GPT-5.3 Codex
winner75.4
Rank #15/70 · confidence 1 · eval date 2026-02-05
Hy3 preview
63.1
Rank #38/70 · confidence 2 · eval date 2026-04-23
GPT-5.3 Codex
winner77.3
Rank #4/33 · confidence 1 · eval date 2026-02-05
Hy3 preview
54.4
Rank #23/33 · confidence 2 · eval date 2026-04-23
GPT-5.3 Codex
winner57.5
Rank #10/42 · confidence 1 · eval date 2026-02-05
Hy3 preview
36.9
Rank #36/42 · confidence 2 · eval date 2026-04-23
GPT-5.3 Codex
winner78.4
Rank #14/81 · confidence 1 · eval date 2026-02-05
Hy3 preview
47.7
Rank #50/81 · confidence 2 · eval date 2026-04-23
GPT-5.3 Codex
86.0
Rank #30/68 · confidence 1 · eval date 2026-02-05
Hy3 preview
winner92.7
Rank #22/68 · confidence 2 · eval date 2026-04-23
Latest completed audits from shared providers, with four safety and integrity score groups plus report links.
| Provider | GPT-5.3 Codex | Hy3 preview |
|---|---|---|
| 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-5.3 Codex | Hy3 preview |
|---|---|---|
0 tests | GPT-5.3 Codex speed / latency N/A / N/A input / output No data |
This report only uses LMSpeed data for GPT-5.3 Codex and Hy3 preview: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Guidance | GPT-5.3 Codex | Hy3 preview |
|---|---|---|
| When to choose each model | GPT-5.3 Codex GPT-5.3 Codex is stronger when you prioritize Cheapest input price, Free providers, Provider coverage, Recent tests. | Hy3 preview Hy3 preview does not clearly lead on the verified metrics here, so check provider-specific pricing before choosing. |
TL;DR: GPT-5.3 Codex leads across 117 verifiable data points, including pricing, speed, latency, benchmarks, and provider examples.
Continue from GPT-5.3 Codex vs Hy3 preview into nearby model comparisons with enough verified LMSpeed data.
| No data |
| Model metadata | GPT-5.3 Codex exposes 400K tokens; notable signals: Text input, Image input, File input, Text output. | Hy3 preview exposes 262.1K tokens; notable signals: Text input, Text output, Tool calling, Reasoning. |
|---|---|---|
| Developer | OpenAI | Tencent |
| Context window | 400K tokens | 262.1K tokens |
| Max output | 128K tokens | No data |
| Released | Feb 2026 | No data |
| Modalities | Input TextImageFile Output Text | Input Text Output Text |
| Features | Text inputImage inputFile inputText outputTool callingStructured outputsJSON modeReasoning | Text inputText outputTool callingReasoning |
| Parameters | No data | No data |
| Tokenizer | GPT | Other |
| Knowledge cutoff | No data | No data |
| OpenRouter ID | openai/gpt-5.3-codex | tencent/hy3-preview |
| References | No data | No data |
Hy3 preview
speed / latency
N/A / N/A
input / output
No data
APDSM0 tests | GPT-5.3 Codex speed / latency N/A / N/A input / output No data | Hy3 preview speed / latency N/A / N/A input / output No data |
|---|
Medu Chat0 tests | GPT-5.3 Codex gpt-5.3-codex-spark speed / latency N/A / N/A input / output $1.75/M / $14.00/M | Hy3 preview hy3-preview speed / latency N/A / N/A input / output $75.00/M / $75.00/M |
|---|
OpenRouter Fans0 tests | GPT-5.3 Codex speed / latency N/A / N/A input / output No data | Hy3 preview speed / latency N/A / N/A input / output No data |
|---|
兔子API0 tests | GPT-5.3 Codex gpt-5.3-codex speed / latency N/A / N/A input / output $1.25/M / $10.00/M | Hy3 preview hy3-preview speed / latency N/A / N/A input / output $75.00/M / $75.00/M |
|---|
GPT-5.3 Codex gpt-5.3-codex-xhigh speed / latency No data input / output $0.857/M / $6.85/M | Hy3 preview hy3-preview speed / latency No data input / output $36.71/M / $36.71/M |
Rankings are based on community-submitted tests and periodic health probes. Advisory only, not official data.
