Kimi K2.5

by Moonshot

Kimi K2.5, released January 27, 2026, is Moonshot's native multimodal agentic model, integrating vision and language through continual pretraining on roughly 15 trillion mixed visual and text tokens. It keeps the 1 trillion total parameter MoE architecture with 32 billion active parameters and adds visual understanding through a MoonViT vision encoder of about 400 million parameters. The model handles code generation from visual specifications, visual reasoning across UI designs and video, and tool orchestration grounded in visual inputs. It supports a 256K token context window and offers several operational modes ranging from instant responses to deliberate reasoning and multi-agent coordination. A standout capability is agent swarm coordination, which can coordinate up to 100 parallel sub-agents and around 1,500 tool calls per task to decompose and execute complex work, with roughly 4.5 times faster execution than a single agent on wide tasks. It reports strong results on coding benchmarks, including 76.8% on SWE-Bench Verified.

Key info

Input
Output
Features
Context window
262K
Max output
16K
Input price
$0.57 /1M
Output price
$3.01 /1M
  • EU/EEA residency available
  • US residency available
  • Zero data retention on pay-as-you-go
  • No training by default
  • GDPR DPA available

Available routes

Kimi K2.5 runs on 8 different routes through the Opper gateway. Compare residency, ZDR, and training posture at a glance β€” full data-handling detail per route below.

ProviderRegionZero data retentionTrainingInputOutput
Alibaba CloudEUEnterpriseNo$0.57$3.01
DeepInfraUSEnterpriseNo$0.45$2.25
EvrocEUZero data retentionNo$0.60$3.00
FireworksUSEnterpriseNo$0.60$3.00
GeoddEU/EEAZero data retentionNo$0.40$2.60
GeoddUSZero data retentionNo$0.40$2.60
NebiusUSEnterpriseNo$0.50$2.50
NovitaUSEnterpriseNo$0.60$3.00

Training posture across routes: No training on prompts by default.

Data handling per route

Each route hosting Kimi K2.5 has its own privacy posture, residency, and GDPR terms. Postures are maintained by Opper with a last-verification timestamp.

Alibaba Cloud β€” GermanyπŸ‡©πŸ‡ͺ

Zero data retention is available via Opper Enterprise contract. No training on customer data. EU; DPA available.

Zero data retention
Available via Opper Enterprise contract.
Training
No training on customer data.
Logging
Abuse monitoring
Third-party access
None disclosed
GDPR DPA
DPA available
Transfer mechanism
Not applicable β€” data stays in EU

DeepInfra β€” United StatesπŸ‡ΊπŸ‡Έ

Zero data retention is available via Opper Enterprise contract. No training on customer data. US; unknown.

Zero data retention
Available via Opper Enterprise contract.
Training
No training on customer data.
Logging
Limited debug logs
Third-party access
None disclosed
GDPR DPA
No DPA
Transfer mechanism
unknown

Evroc β€” SwedenπŸ‡ΈπŸ‡ͺ

Zero data retention is on by default on Pay-as-you-go β€” no action required. No training on customer data. EU; DPA available.

Zero data retention
On by default on Pay-as-you-go.
Training
No training on customer data.
Logging
Abuse monitoring
Third-party access
None disclosed
GDPR DPA
DPA available
Transfer mechanism
Not applicable β€” data stays in EU

Fireworks β€” United StatesπŸ‡ΊπŸ‡Έ

Zero data retention is available via Opper Enterprise contract. No training on customer data. US; SCCs; DPA available.

Zero data retention
Available via Opper Enterprise contract.
Training
No training on customer data.
Logging
None
Third-party access
None disclosed
GDPR DPA
DPA available
Transfer mechanism
SCCs

Geodd β€” NorwayπŸ‡³πŸ‡΄

Zero data retention is on by default on Pay-as-you-go β€” no action required. No training on customer data. EEA; SCCs.

Zero data retention
On by default on Pay-as-you-go.
Training
No training on customer data.
Logging
None
Third-party access
Provider may share with subprocessors / partners
GDPR DPA
No DPA
Transfer mechanism
SCCs

Geodd β€” United StatesπŸ‡ΊπŸ‡Έ

Zero data retention is on by default on Pay-as-you-go β€” no action required. No training on customer data. US; SCCs.

Zero data retention
On by default on Pay-as-you-go.
Training
No training on customer data.
Logging
None
Third-party access
Provider may share with subprocessors / partners
GDPR DPA
No DPA
Transfer mechanism
SCCs

Nebius β€” United StatesπŸ‡ΊπŸ‡Έ

Zero data retention is available via Opper Enterprise contract. No training on customer data. US; SCCs; DPA available.

Zero data retention
Available via Opper Enterprise contract.
Training
No training on customer data.
Logging
Abuse monitoring
Third-party access
None disclosed
GDPR DPA
DPA available
Transfer mechanism
SCCs

Novita β€” United StatesπŸ‡ΊπŸ‡Έ

Zero data retention is available via Opper Enterprise contract. No training on customer data. US; SCCs; DPA available.

Zero data retention
Available via Opper Enterprise contract.
Training
No training on customer data.
Logging
Abuse monitoring
Third-party access
None disclosed
GDPR DPA
DPA available
Transfer mechanism
SCCs

Benchmarks

Independent benchmark scores β€” composite indices for reasoning, coding, and math, plus individual eval scores where available.

Global rank#41 of 531 LLMs
TierStrong
Output speed43 tok/s
First token1.20s
Intelligence Index38.1
Coding Index39.6
Reasoning & knowledge
GPQA Diamond
88%
Humanity's Last Exam
29%
Long-context reasoning
65%
Coding
SciCode
49%
Agentic & tool use
Terminal-Bench Hard
35%
τ²-Bench Telecom
96%
Math & instruction following
IFBench
70%

Get started

Call Kimi K2.5 through the Opper gateway with one API key. Let your coding agent set it up, or call it directly β€” Opper is drop-in compatible with the OpenAI, Anthropic, and Google AI SDKs.

Set it up with your agent

Copy this and paste it into your coding agent β€” Claude Code, Cursor, Codex, and more β€” and it'll wire up Opper for you.

Or call it directly

import OpenAI from "openai";
const client = new OpenAI({
apiKey: process.env.OPPER_API_KEY,
baseURL: "https://api.opper.ai/v3/compat",
});
const completion = await client.chat.completions.create({
model: "alibaba:eu/kimi-k2.5",
messages: [{ role: "user", content: "Hello" }],
});
console.log(completion.choices[0].message.content);

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Side-by-side on privacy, EU hosting, pricing, and benchmarks.

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Kimi K2.5 by Moonshot β€” pricing, benchmarks, ZDR, EU/US hosting | Opper AI