Data points: 58
The readout for GPT-OSS and Kimi K2 Instruct, before the detailed comparison sheet.
Decision read
GPT-OSS
GPT-OSS currently has the stronger profile, with verified wins split 4 to 1.
Evidence depth
58 data points
Includes 0 benchmark rows, 0 audit samples, and 7 provider examples.
Selection signal
Start with GPT-OSS
The charts below split 7 high-signal samples across speed, scores, and audit health.
Model compare GPT-OSS vs Kimi K2 Instructgpt-oss-vs-kimi-k2-instruct | Model A GPT-OSS | Model B Kimi K2 Instruct |
|---|---|---|
| Overall leader | Leading | Contender |
| Verified metric wins | 4 wins | 1 wins |
| Where it leads | Average speed, Free providers, Provider coverage, Recent tests |
Third-party benchmark profile synced into LMSpeed; only metrics available for both models are shown.
| Metric | GPT-OSS | Kimi K2 Instruct |
|---|---|---|
| No shared benchmark metrics are available yet. | ||
Latest completed audits from shared providers, with four safety and integrity score groups plus report links.
| Provider | GPT-OSS | Kimi K2 Instruct |
|---|---|---|
| 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 | Kimi K2 Instruct |
|---|---|---|
115 tests | GPT-OSS speed / latency 154 tok/s / 963ms input / output No data |
This report only uses LMSpeed data for GPT-OSS and Kimi K2 Instruct: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Guidance | GPT-OSS | Kimi K2 Instruct |
|---|---|---|
| When to choose each model | GPT-OSS GPT-OSS is stronger when you prioritize Average speed, Free providers, Provider coverage, Recent tests. | Kimi K2 Instruct Kimi K2 Instruct is stronger when you prioritize First-token latency. |
TL;DR: GPT-OSS leads across 58 verifiable data points, including pricing, speed, latency, benchmarks, and provider examples.
Continue from GPT-OSS vs Kimi K2 Instruct into nearby model comparisons with enough verified LMSpeed data.
| First-token latency |
| Model metadata | GPT-OSS exposes 131.1K tokens; notable signals: Text input, Text output, Tool calling, Reasoning. | No OpenRouter metadata is available yet for this model. |
|---|---|---|
| Developer | No data | Moonshot AI |
| Context window | 131.1K tokens | No data |
| Max output | 131.1K tokens | No data |
| Released | Aug 2025 | No data |
| Modalities | Input Text Output Text | No data |
| Features | Text inputText outputTool callingReasoning | None listed |
| Parameters | 120B | No data |
| Tokenizer | GPT | No data |
| Knowledge cutoff | 2024-06-30 | No data |
| OpenRouter ID | openai/gpt-oss-120b:free | No data |
| References | No data | No data |
Kimi K2 Instruct
speed / latency
45 tok/s / 578ms
input / output
No data
GPT Load (AllAI)70 tests | GPT-OSS speed / latency 198 tok/s / 7216ms input / output No data | Kimi K2 Instruct speed / latency N/A / N/A input / output No data |
|---|
RinkoAI70 tests | GPT-OSS speed / latency N/A / N/A input / output No data | Kimi K2 Instruct speed / latency 182 tok/s / 1382ms input / output No data |
|---|
素墨API35 tests | GPT-OSS speed / latency 347 tok/s / 2670ms input / output No data | Kimi K2 Instruct speed / latency N/A / N/A input / output No data |
|---|
星见雅 API20 tests | GPT-OSS openai/gpt-oss-120b speed / latency 164 tok/s / 1247ms input / output $0/M / $0/M | Kimi K2 Instruct 英伟达/moonshotai/kimi-k2-instruct-0905 speed / latency N/A / N/A input / output $0/M / $0/M |
|---|
GPT-OSS openai/gpt-oss-20b speed / latency No data input / output $0/M / $0/M | Kimi K2 Instruct moonshotai/kimi-k2-instruct-0905 speed / latency No data input / output $0/M / $0/M |
GPT-OSS openai/gpt-oss-20b speed / latency No data input / output $0/M / $0/M | Kimi K2 Instruct moonshotai/kimi-k2-instruct-0905 speed / latency No data input / output $0/M / $0/M |
Rankings are based on community-submitted tests and periodic health probes. Advisory only, not official data.
