# Kimi K3

Kimi K3 is a text generation model from Moonshot AI, available through the Impossibl API. Its published context window is 1,048,576 tokens. The advertised input rate is $3.00 per million input tokens. The advertised output rate is $15.00 per million output tokens.

- Model identifier: ` moonshotai/kimi-k3 `
- Creator: Moonshot AI
- Model type: Text generation
- Canonical model page: [Kimi K3](<https://impossibl.com/moonshotai/kimi-k3>)
- API availability: Listed as serving through Impossibl.
- Creator release date: 2026-07-16

## Capabilities and limits

- Context window: 1,048,576 tokens
- Maximum output tokens: Not published in the public catalog; this is separate from the context window.
- Inputs: text, image
- Outputs: text
- Tool calling: Not published

## API access

Use ` moonshotai/kimi-k3 ` as the model identifier through the Impossibl API.

Published API endpoints:

- ` /v1/chat/completions `

[API quickstart](<https://impossibl.com/docs/agent-quickstart>) · [Models and billing documentation](<https://impossibl.com/docs/models>)

## Published API prices

All rates are in USD. An unpublished rate is unknown, not zero. Workspace-specific pricing, taxes, balance-purchase fees, billing adjustments, and tool charges can affect the amount paid.

| Usage | Published base rate | Billing unit |
| --- | --- | --- |
| Input | $3.00 | per million input tokens |
| Output | $15.00 | per million output tokens |
| Cache read | $0.30 | per million cached input tokens |
| Cache write (default retention) | Not published | per million tokens |
| Cache write (one-hour retention) | Not published | per million tokens |
| Audio input | Not published | per million audio input tokens |

## Independent benchmarks

Source: [Artificial Analysis](<https://artificialanalysis.ai/>). Last checked: 2026-09-11T11:52:20.926Z.
Configurations are evaluated separately. API scores retain their original units. Unmeasured scores are omitted.

### Kimi K3 (max)

Source: [Evaluation source](<https://artificialanalysis.ai/models/kimi-k3>)

| Benchmark | Score |
| --- | --- |
| Intelligence Index | 43.78 |
| Omniscience Index | 19.70 |
| GPQA | 93.54% |
| Humanity’s Last Exam | 46.90% |
| SciCode | 59.49% |
| CritPt | 23.43% |
| Terminal-Bench v2.1 | 85.02% |
| Terminal-Bench v4.0 | 12.63% |
| AA-LCR | 88.67% |
| Multilingual LCR | 38.33% |
| Harvey LAB | 94.64% |
| GDPval Elo | 1583.53 |
| GDP.pdf All-pass | 22.00% |
| AutomationBench Partial | 58.27% |
| AnalystAgent | 38.75% |
| MMMU-Pro | 80.52% |
| Tau Banking | 45.98% |
| APEX-Agents | 41.30% |
| ITBench | 47.69% |
| coding index (API) | 76.2 |
| agentic index (API) | 50.6 |
| intelligence index (API) | 43.8 |

### Kimi K3 (low)

Source: [Evaluation source](<https://artificialanalysis.ai/models/kimi-k3-low>)

| Benchmark | Score |
| --- | --- |
| Intelligence Index | 34.46 |
| Omniscience Index | 3.92 |
| GPQA | 84.24% |
| Humanity’s Last Exam | 24.98% |
| SciCode | 52.66% |
| CritPt | 3.14% |
| Terminal-Bench v2.1 | 82.40% |
| AA-LCR | 79.33% |
| GDPval Elo | 1196.20 |
| GDP.pdf All-pass | 18.60% |
| AutomationBench Partial | 49.26% |
| MMMU-Pro | 78.50% |
| Tau Banking | 41.65% |
| coding index (API) | 72 |
| agentic index (API) | 30.7 |
| intelligence index (API) | 34.5 |

Full benchmark data and breakdowns: [Complete benchmark snapshot](<https://api.impossibl.com/v1/models/moonshotai/kimi-k3/benchmarks>).


## Availability and retirement

The model is listed as serving. No retirement is announced in the current public catalog.

## Frequently asked questions

### What is Kimi K3?

Kimi K3 is a text-generation model from Moonshot AI, available through the Impossibl API.

### How much does Kimi K3 cost?

Kimi K3 costs $3.00 per million input tokens and $15.00 per million output tokens through the Impossibl API. Cache reads cost $0.30 per million tokens. All rates are in USD.

### What is the context length of Kimi K3?

Kimi K3 has a 1,048,576-token context window through the Impossibl API.

### What inputs and outputs does Kimi K3 support?

Kimi K3 accepts text and image as input. Kimi K3 returns text.

### How do I use Kimi K3 through an API?

Kimi K3 is available through the Impossibl API. Use moonshotai/kimi-k3 as the model identifier with /v1/chat/completions. The quickstart explains how to create an API key and send your first request.

### When was Kimi K3 released?

Moonshot AI released Kimi K3 on July 16, 2026.

Sources: [Creator release announcement](<https://www.moonshot.ai/>)

## Sources and related links

Prices, limits, capabilities, endpoints, and availability come from the public Impossibl catalog. Creator documentation supplies descriptions and release dates where available; it does not override the published API offering.

- [Public Impossibl model catalog](<https://api.impossibl.com/v1/models>)
- [Full model directory as JSON](<https://impossibl.com/models.json>)
- [Kimi K3: model details and pricing](<https://impossibl.com/moonshotai/kimi-k3>)
- [Model directory](<https://impossibl.com/models>)