How much does Kimi K2 (Jul 2025) cost?

Kimi K2 (Jul 2025) costs $0.55 per million input tokens and $2.20 per million output tokens, using the list price from Vercel_ai_gateway as of 26 Oct 2026. That is about $0.17 for 100 chats of about 1,000 tokens in and 500 tokens back. Confirm on the maker's site before you buy, because prices change.

What is the context window of Kimi K2 (Jul 2025)?

Kimi K2 (Jul 2025) has a context window of 131K tokens, roughly 98,000 words of text read at once. A single answer can be up to 16K tokens long.

Is Kimi K2 (Jul 2025) open source?

Kimi K2 (Jul 2025) has open weights: its trained parameters can be downloaded. That is not always the same as open source, because licence terms differ, so read the licence before you use it commercially.

How good is Kimi K2 (Jul 2025) compared with other AI models?

On the Epoch Capabilities Index, Kimi K2 (Jul 2025) scores 140.0 (likely range 136.3 to 141.9), which ranks 121 of 270 models we track. On Arena's human-vote text board it is ranked 91 of 166. Scores close together are a tie in practice.

How does Kimi K2 (Jul 2025) compare with Gemini 2.5 Flash (Apr 2025)?

Kimi K2 (Jul 2025) scores higher on 1 of 2 shared quality measures, Gemini 2.5 Flash (Apr 2025) on 0. 1 measure is too close to call. See the full comparison for every measure.

How current are these numbers for Kimi K2 (Jul 2025)?

The newest data on this page is dated 26 Oct 2026. Scores come from Epoch AI and Arena, prices from the open LiteLLM price list.

AI Rankings

Kimi K2 (Jul 2025): Score, Price and Context Window

Where Kimi K2 (Jul 2025) from Moonshot AI ranks, what it costs and how much text it can read, in plain numbers with the sources.

Data updated 26 Oct 2026

Moonshot AI
Open weights
Released Jul 2025

Its score range overlaps with Grok-3 mini, the model just above it, so a small gap in rank is not a meaningful difference.

Best for

Running it yourself: its weights can be downloaded (read the licence terms first).

These lines are worked out from the numbers on this page, not from hands-on testing.

Key facts

Overall score: 140.0; Rank 121 of 270. Likely range 136.3 to 141.9.
Human preference: chat: 1418; Rank 91 of 166. 27,136 votes.
Human preference: coding: 1460; Rank 93 of 166. 5,193 votes.
Price per million tokens: $0.55 in / $2.20 out; Blended $0.96. List price from Vercel_ai_gateway, checked 26 Oct 2026.
Context window: 131K tokens; About 98,000 words at once. One answer up to 16K tokens.
Weights: Open; The weights can be downloaded. Check the licence before commercial use.

Features listed by the price list: Tool use.

Try itKimi in our AI tools directoryAI assistant for research, documents, presentations, coding, and agent-driven knowledge work.

How Kimi K2 (Jul 2025) stacks up

Each strip shows every model we track as faint bars. The dot is this model. Better is always to the right, even for price.

Kimi K2 (Jul 2025) compared with all models we trackOverall capability: 140.0. Better than 55% of the other 269 models. Human preference: chat: 1418. Better than 45% of the other 165 models. Human preference: coding: 1460. Better than 44% of the other 165 models. Price: $0.96 per 1M. Cheaper than 53% of the other 200 priced models. Context window: 131K tokens. Larger context window than 28% of the other 198 models.

Overall capability140.0
Better than 55% of the other 269 modelsUpper half
Epoch Capabilities Index: one score that combines many tests.
Human preference: chat1418
Better than 45% of the other 165 models
How often people pick its answers over another model's on Arena.
Human preference: coding1460
Better than 44% of the other 165 models
How often people pick its answers to coding questions on Arena.
Price$0.96 per 1M
Cheaper than 53% of the other 200 priced modelsUpper half
Blended price per million tokens. Lower is better, so the cheapest models sit on the right.
Context window131K tokens
Larger context window than 28% of the other 198 models
How much text it can read at once. Bigger suits long documents.

Compared with the other published models that have each measure. Data updated 26 Oct 2026.

Where Kimi K2 (Jul 2025) ranks

Leaderboards it appears on, best placing first.

See all leaderboards

Test results

Each test checks one kind of skill. Place shows where it stands among the models that took that test.

Aider Polyglot
225 coding exercises in six programming languages. The AI edits the code files and the exercise's tests decide pass or fail.
59.1%
Place 19 of 46
Terminal-Bench
Tasks done in a computer terminal, such as setting up software or fixing a broken build, checked by automatic tests. Scores here use the benchmark's standard reference agent so models are compared on the same footing.
27.8%
Place 19 of 25
SimpleBench
Everyday common-sense and trick questions that most people answer correctly but AI models often get wrong.
26.3%
Place 67 of 80

What it costs in everyday terms

List prices turned into amounts you can picture. Real bills depend on how you use it.

100 chats: $0.17; Cost of 100 chats assumes each chat sends 1,000 tokens (about 750 words) and gets 500 tokens (about 375 words) back.
A 300-page book: $0.06; Cost to read a 300-page book assumes about 100,000 input tokens and no reply. A real book varies with page size and language.
Blended price: $0.96 per 1M; Three parts input to one part output. Our own calculation for comparing models.

Similar models

Models from other makers with a similar overall score.

Learn more

Questions about Kimi K2 (Jul 2025)

How much does Kimi K2 (Jul 2025) cost?: Kimi K2 (Jul 2025) costs $0.55 per million input tokens and $2.20 per million output tokens, using the list price from Vercel_ai_gateway as of 26 Oct 2026. That is about $0.17 for 100 chats of about 1,000 tokens in and 500 tokens back. Confirm on the maker's site before you buy, because prices change.
What is the context window of Kimi K2 (Jul 2025)?: Kimi K2 (Jul 2025) has a context window of 131K tokens, roughly 98,000 words of text read at once. A single answer can be up to 16K tokens long.
Is Kimi K2 (Jul 2025) open source?: Kimi K2 (Jul 2025) has open weights: its trained parameters can be downloaded. That is not always the same as open source, because licence terms differ, so read the licence before you use it commercially.
How good is Kimi K2 (Jul 2025) compared with other AI models?: On the Epoch Capabilities Index, Kimi K2 (Jul 2025) scores 140.0 (likely range 136.3 to 141.9), which ranks 121 of 270 models we track. On Arena's human-vote text board it is ranked 91 of 166. Scores close together are a tie in practice.
How does Kimi K2 (Jul 2025) compare with Gemini 2.5 Flash (Apr 2025)?: Kimi K2 (Jul 2025) scores higher on 1 of 2 shared quality measures, Gemini 2.5 Flash (Apr 2025) on 0. 1 measure is too close to call. See the full comparison for every measure.
How current are these numbers for Kimi K2 (Jul 2025)?: The newest data on this page is dated 26 Oct 2026. Scores come from Epoch AI and Arena, prices from the open LiteLLM price list.

Where this data comes from

Epoch AI: Benchmark data: Epoch AI, 'Capabilities & benchmarking', epoch.ai/benchmarks (CC BY 4.0). We match models across sources, rank them and show them in charts. Scores are not changed. Epoch AI does not endorse this site.
Arena (formerly LMArena): Human-preference ratings: Arena (arena.ai) leaderboard dataset, CC BY 4.0. We keep the latest published ratings, match them to models from other sources and rank them. Ratings are not changed. Arena does not endorse this site.
LiteLLM model price list: Prices and context windows: LiteLLM model price list (github.com/BerriAI/litellm, MIT licence). We use the model maker's own price entry when there is one. Prices change often, so always confirm on the maker's site before you buy.

Newest data on this page: 26 Oct 2026. Prices are list prices and change often, so confirm on the maker's site before you buy. Sponsors never change a score or an order. How we calculate this · Report a mistake