Data points: 54
Model compare
The readout for GPT-5.4 and Kimi K2 Thinking Turbo, before the detailed comparison sheet.
Weighted outcome: GPT-5.4. Benchmark capability categories carry 80%, while price, API performance, and availability carry 20%.
Decision read
GPT-5.4
GPT-5.4 has the higher weighted result; Model A / B score 100 to 0.
Evidence depth
54 data points
Includes 0 benchmark rows, 0 audit samples, and 5 provider examples.
Selection signal
Start with GPT-5.4
The charts below split 5 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-5.4 and Kimi K2 Thinking Turbo: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Model compare | GPT-5.4 | Kimi K2 Thinking Turbo |
|---|---|---|
| Overall leader | Leading | Contender |
| Weighted overall score | 100.0 pts | 0.0 pts |
| Benchmark category leads | 0 categories | 0 categories |
| Operational advantages | Cheapest input price, Free providers, Provider coverage | No data |
| Context window | 1.1M tokens | No data |
| Max output | 128K tokens | No data |
| Modalities | Input TextImageFile Output 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-5.4 | Kimi K2 Thinking Turbo |
|---|---|---|
| Developer | OpenAI | Moonshot AI |
| Released | Mar 2026 | No data |
| Parameters | No data | No data |
| Tokenizer | GPT | No data |
| Knowledge cutoff | No data | No data |
| OpenRouter ID | openai/gpt-5.4 | No data |
| References | No data | No data |
This report only uses LMSpeed data for GPT-5.4 and Kimi K2 Thinking Turbo: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
GPT-5.4
GPT-5.4 has these operational advantages: Cheapest input price, Free providers, Provider coverage.
Kimi K2 Thinking Turbo
Kimi K2 Thinking Turbo does not clearly lead in the benchmark or operational dimensions shared by both models.
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-5.4
57.8
Avg. score
Kimi K2 Thinking Turbo
-
GPT-5.4
GPT-5.4
GPT-5.4
GPT-5.4
GPT-5.4
No data
GPT-5.4
GPT-5.4
Metric-level scores with benchmark source, rank depth, confidence, error, and evaluation date where available.
No shared professional benchmark scores are available yet.
Latest completed audits from shared providers, with four safety and integrity score groups plus report links.
| Provider | GPT-5.4 | Kimi K2 Thinking Turbo |
|---|---|---|
| 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-5.4 | Kimi K2 Thinking Turbo |
|---|---|---|
5 tests | GPT-5.4 speed / latency 50 tok/s / 1423ms input / output No data | Kimi K2 Thinking Turbo speed / latency N/A / N/A input / output No data |
0 tests | GPT-5.4 speed / latency N/A / N/A input / output No data | Kimi K2 Thinking Turbo speed / latency N/A / N/A input / output No data |
0 tests | GPT-5.4 speed / latency N/A / N/A input / output No data | Kimi K2 Thinking Turbo speed / latency N/A / N/A input / output No data |
0 tests | GPT-5.4 speed / latency N/A / N/A input / output No data | Kimi K2 Thinking Turbo speed / latency N/A / N/A input / output No data |
0 tests | GPT-5.4 gpt-5.4 speed / latency N/A / N/A input / output $0.022/request | Kimi K2 Thinking Turbo kimi-k2-thinking-turbo speed / latency N/A / N/A input / output $10.27/M |
Weighted outcome: GPT-5.4. Benchmark capability categories carry 80%, while price, API performance, and availability carry 20%.
| Features | Text inputImage inputFile inputText outputTool callingStructured outputsJSON modeReasoning | None listed |
|---|
