Data points: 45
The readout for GPT-5.3 Codex and Mistral Large 2407, 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
45 data points
Includes 6 benchmark rows, 0 audit samples, and 1 provider examples.
Selection signal
Start with GPT-5.3 Codex
The charts below split 7 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 Mistral Large 2407gpt-5-3-codex-vs-mistral-large-2407 | Model A GPT-5.3 Codex | Model B Mistral Large 2407 |
|---|---|---|
| Overall leader | Leading | Contender |
| Verified metric wins | 4 wins | 0 wins |
| Where it leads | Cheapest input price, Free providers, Provider coverage, Recent tests | No data |
| Model metadata | GPT-5.3 Codex exposes 400K tokens; notable signals: Text input, Image input, File input, Text output. | Mistral Large 2407 exposes 131.1K tokens; notable signals: Text input, File input, Text output, Tool calling. |
| Developer | OpenAI | Mistralai |
| Context window | 400K tokens | 131.1K tokens |
| Max output | 128K tokens | No data |
| Released | Feb 2026 | No data |
| Modalities | Input TextImageFile Output Text | Input TextFile Output Text |
| Features | Text inputImage inputFile inputText outputTool callingStructured outputsJSON modeReasoning | Text inputFile inputText outputTool callingStructured outputsJSON mode |
| Parameters | No data | No data |
| Tokenizer | GPT | Mistral |
| Knowledge cutoff | No data | 2024-03-31 |
| OpenRouter ID | openai/gpt-5.3-codex | mistralai/mistral-large-2407 |
| References | No data | No data |
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
Mistral Large 2407
35.6
Selected category
Coding
GPT-5.3 Codex leads by 33.3
Metric-level scores with benchmark source, rank depth, confidence, error, and evaluation date where available.
GPT-5.3 Codex
$14.00/M
Rank #113/138 · confidence 4
Mistral Large 2407
winner$6.00/M
Rank #93/138 · confidence 4
GPT-5.3 Codex
$4.81/M
Rank #113/138 · confidence 4
Mistral Large 2407
winner$3.00/M
Rank #98/138 · confidence 4
GPT-5.3 Codex
winner$1.75/M
Rank #104/138 · confidence 4
Mistral Large 2407
$2.00/M
Rank #107/138 · confidence 4
GPT-5.3 Codex
winner91.5%
Rank #6/152 · confidence 4
Mistral Large 2407
47.2%
Rank #135/152 · confidence 4
GPT-5.3 Codex
winner39.9%
Rank #8/150 · confidence 4
Mistral Large 2407
3.2%
Rank #146/150 · confidence 4
GPT-5.3 Codex
winner53.2%
Rank #7/149 · confidence 4
Mistral Large 2407
27.1%
Rank #123/149 · confidence 4
Latest completed audits from shared providers, with four safety and integrity score groups plus report links.
| Provider | GPT-5.3 Codex | Mistral Large 2407 |
|---|---|---|
| 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 | Mistral Large 2407 |
|---|---|---|
AI API0 tests | GPT-5.3 Codex gpt-5.3-codex speed / latency N/A / N/A input / output $3.50/M / $28.00/M | Mistral Large 2407 mistralai/mistral-large-2407 speed / latency N/A / N/A input / output $4.00/M / $12.00/M |
This report only uses LMSpeed data for GPT-5.3 Codex and Mistral Large 2407: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Guidance | GPT-5.3 Codex | Mistral Large 2407 |
|---|---|---|
| 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. | Mistral Large 2407 Mistral Large 2407 does not clearly lead on the verified metrics here, so check provider-specific pricing before choosing. |
TL;DR: GPT-5.3 Codex leads across 45 verifiable data points, including pricing, speed, latency, benchmarks, and provider examples.
Continue from GPT-5.3 Codex vs Mistral Large 2407 into nearby model comparisons with enough verified LMSpeed data.
Rankings are based on community-submitted tests and periodic health probes. Advisory only, not official data.
