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MoonshotAI: Kimi K3

moonshotai/kimi-k3

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Kimi K3 is a 2.8T parameter open-weight multimodal reasoning model from Moonshot AI. It is suited for complex coding, knowledge work, and long-horizon agentic workflows, and is particularly strong at navigating large repositories, using tools, debugging, and iterating against images, logs, tests, and runtime feedback. Its architecture uses KDA and Attention Residuals for computational efficiency.

Modalities

In / Out Price

$2.60 / $13per 1M

Context

1M

Released

Jul 16, 2026

Compare
ProvidersPricingPerformanceUptimeBenchmarksAppsActivityFAQ

Providers

Different companies host the same model. OpenRouter routes your request to one of them based on the routing mode you pick — Balanced (price + speed), Nitro (fastest), or Exacto (highest tool-calling accuracy).

Pricing

The average price customers actually pay for this model, next to the prices providers post. Caching and discounts mean the price actually paid is often well below the listed one.

Performance

Throughput is how fast the model writes (tokens per second — higher is better). Latency is total round-trip time (lower is better). TTFT is time-to-first-token — how long before you see anything appear (lower is better).

Uptime

Uptime is the percentage of the past 3 days that at least one provider was responding to requests. Availability is the percentage of time that inference was successfully served. OpenRouter continuously monitors and uses the next-best provider when one returns an error.

Benchmarks

Scores on standardized evaluations. Higher percentages are better — and rank percentile shows where this model lands among all models on OpenRouter.

Apps

Public apps that send the most traffic to this model. Good signal for what real production workloads look like — and a hint at which use cases this model is best suited for.

Activity

Token volume and request traffic to this model over time.

Quick Start

Drop-in code to call this model. OpenRouter's API is OpenAI-compatible — most SDKs work by just swapping the base URL. The only thing that changes between models is the model slug below.

About MoonshotAI: Kimi K3

OpenRouter makes MoonshotAI: Kimi K3 available through a unified, OpenAI-compatible API using the model ID moonshotai/kimi-k3. Requests can be routed across 12 providers, including Sail Research, Morph Fast, DigitalOcean, DeepInfra, Fireworks, Chutes, Together, Moonshot AI and 4 more, with automatic failover when an endpoint is unavailable.

MoonshotAI: Kimi K3 accepts text, images and video and returns text. It has a 1,048,576-token context window and a maximum output of 974,842 tokens.

On OpenRouter, MoonshotAI: Kimi K3 costs $2.60/M input tokens and $13.00/M output tokens, with separate rates for Cache Read at $0.29/M tokens. Effective pricing can be lower when prompt caching applies. It was released on July 16, 2026.

More models from MoonshotAI

  • Kimi K2.7 Code
  • Kimi K2.6
  • Kimi K2.5

Frequently asked questions

Kimi K3 is a 2.8T parameter open-weight multimodal reasoning model from Moonshot AI. It is suited for complex coding, knowledge work, and long-horizon agentic workflows, and is particularly strong at navigating large repositories, using tools, debugging, and iterating against images, logs, tests, and runtime feedback. Its architecture uses KDA and Attention Residuals for computational efficiency.

Kimi K3 costs $2.60/M input tokens and $13.00/M output tokens, with separate rates for Cache Read at $0.29/M tokens.

Kimi K3 has a 1,048,576 token context window. It supports up to 974,842 completion tokens.

Yes. Kimi K3 accepts tools and tool_choice for function calling. It also supports structured outputs via a JSON schema in response_format.

Kimi K3 accepts text, images and video as input and returns text.

Kimi K3 is served by 12 providers on OpenRouter: Sail Research, Morph Fast, DigitalOcean, DeepInfra, Fireworks, Chutes, Together, Moonshot AI and 4 more. Requests are routed to the best available provider, with automatic failover to the others, and you can pin or exclude providers with provider routing.

Kimi K3 was released on July 16, 2026.

$2.60$13.00$0.293.34s40 tps
98.11%
$2.85$14.25$0.2851.59s26 tps
98.73%
$3.00$15.00$0.304.94s28 tps
98.62%
$3.00$15.00$0.302.40s18 tps
98.54%
$3.00$15.00$0.303.31s43 tps
98.64%
$3.00$15.00$0.304.74s23 tps
99.72%
$3.00$15.00$0.3010.88s17 tps
96.61%
$3.00$15.00$0.302.41s60 tps
99.33%
$3.00$15.00$0.302.61s44 tps
97.01%
$3.00$15.00$1.503.01s32 tps
95.84%
$2.80$14.00$0.291.53s12 tps
75.44%
$2.85$14.25$0.2851.05s15 tps
93.56%
$6.00$22.50$0.602.49s25 tps
80.72%

Throughput

60tok/s

P50, best across providers

Latency

1.05s

P50, best provider

AutoExacto Benchmarks
GPQA DiamondTAU-Bench
Fireworks Fast
92.6%--
Wafer Fast
92.2%--
Phala
92.2%--
DeepInfra
90.2%--
Chutes
90.0%--
Wafer
88.4%78.0%
Fireworks
92.7%70.7%
+8 more providers
Uptime (3d)

100.00%

Availability (3d)

99.63%

Availability over the last 3 days

Last 72 hours
Availability 99.63%
3 Days Ago2 Days AgoYesterdayNow

Availability over the last 24 hours

OpenRouter Availability
99.49%
Without Routing
92.35%

When an error occurs in an upstream provider, we can recover by routing to another healthy provider, if your request filters allow it. You can access per-provider uptime data programmatically through the Endpoints API. Learn more about our load balancing and customization options.

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