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gpt-oss-safeguard-20b vs Kimi K2.5

How do these models stack up? Below is an expert side-by-side comparison of specifications, context window capacity, live pricing per million tokens, and standardized benchmark scores for gpt-oss-safeguard-20b and Kimi K2.5.

OpenAI

gpt-oss-safeguard-20b

gpt-oss-safeguard-20b is a safety reasoning model from OpenAI built upon gpt-oss-20b. This open-weight, 21B-parameter Mixture-of-Experts (MoE) model offers lower latency for safety tasks like content classification, LLM filtering, and trust...

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Moonshot AI

Kimi K2.5

Kimi K2.5 is Moonshot AI's native multimodal model, delivering state-of-the-art visual coding capability and a self-directed agent swarm paradigm. Built on Kimi K2 with continued pretraining over approximately 15T mixed...

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Technical Specifications

Specificationgpt-oss-safeguard-20bKimi K2.5
ProviderOpenAIMoonshot AI
Context Window131,072 tokens262,144 tokens
Agent SuitabilityN/AN/A
Time to First Token (TTFT)N/AN/A
Deployment Modelmanaged apimanaged api
Production Stabilitystablestable
API AvailableYesYes
Released Date2025-10-292026-01-27

API Pricing Comparison

Input Price per Million Tokens

gpt-oss-safeguard-20b

$0.07

Kimi K2.5

$0.38

Output Price per Million Tokens

gpt-oss-safeguard-20b

$0.30

Kimi K2.5

$2.02

Want to test both models live?

Run side-by-side prompt prompts in our dynamic Sandbox. Check execution speeds, latency metrics, and compute actual costs in real-time.

Benchmark Performance Metrics

Scores show the raw performance percentages verified across key evaluation suites. Higher bars indicate superior accuracy and capability in that domain.

MMLUGeneral knowledge & multi-task understanding
N/Avs8250.0%
gpt-oss-safeguard-20b
Kimi K2.5
HumanEvalPython coding & logic synthesis
N/Avs8300.0%
gpt-oss-safeguard-20b
Kimi K2.5
MATHComplex mathematical problem solving
N/Avs5900.0%
gpt-oss-safeguard-20b
Kimi K2.5
GPQAGraduate-level expert reasoning
N/Avs4100.0%
gpt-oss-safeguard-20b
Kimi K2.5
HellaSwagCommonsense reasoning and inference
N/Avs8400.0%
gpt-oss-safeguard-20b
Kimi K2.5
MT-BenchMulti-turn conversation flow quality
N/Avs880.0%
gpt-oss-safeguard-20b
Kimi K2.5

gpt-oss-safeguard-20b Quirks & Gotchas

No developer gotchas reported.

Kimi K2.5 Quirks & Gotchas

No developer gotchas reported.