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Moonshot v1 128K

Retired

Legacy text model of the moonshot-v1 series. Release date and knowledge cutoff never published; cache-hit pricing was never specified for the v1 family. Confirmed RETIRED on 2026-08-31. Signal (first-party, stated as a consequence, not inferred): platform.kimi.ai/docs/models.md carries a warning block reading "The kimi-k2.5 and moonshot-v1 series were officially retired on August 31, 2026. Calls to these models now return a 404 (model not found) error. Please migrate to kimi-k3" — read 2026-09-02. Corroborated the same morning by Moonshot deleting this model's own pricing page: platform.kimi.ai/docs/pricing/chat-k25.md and chat-v1.md now 307-redirect onto the model list, which is why the citation below was repointed there. Until 2026-09-02 this row published status "ga", which was wrong from 2026-08-31 onward — nothing in this repo reads Moonshot, so the retirement went unseen for two days. Prices retained as the last published rates, read from platform.kimi.ai/docs/pricing/chat-v1.md on 2026-06-28 before Moonshot deleted that page. Moonshot names kimi-k3 as the migration target.

Moonshot v1 128K by Moonshot costs $2 per 1M input tokens and $5 per 1M output tokens ($2.75/1M blended), with a 131K (131.072-token) context window. It has been retired (shut down 31 Aug 2026); the recommended migration is Kimi K3.

Last verified: 26 Sep 2026 · sourced from official provider documentation

Retired on 31 Aug 2026

Lifecycle warning

This model has been retired. Recommended migration: Kimi K3.

Read the Moonshot v1 128K migration guide → replacement & cheapest alternatives

Provider
Moonshot
Status
Retired
Input price
$2 / 1M tokens
Output price
$5 / 1M tokens
Cached input
—
Blended price
$2.75 / 1M tokens
Context window
131.072 tokens (131K)
Max output
—
Modality
text
Open weights
No — API only
Knowledge cutoff
—
Released
—
API string
moonshot-v1-128k

Source: Moonshot official documentation ↗

See also

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FAQ

Moonshot v1 128K — questions & answers

How much does Moonshot v1 128K cost?

Moonshot v1 128K is priced at $2 per 1M input tokens and $5 per 1M output tokens ($2.75/1M blended at a 3:1 input-to-output ratio).

What is the context window of Moonshot v1 128K?

Moonshot v1 128K has a 131.072-token context window (131K).

Is Moonshot v1 128K still available?

Moonshot v1 128K has been retired and is no longer available. Its scheduled shutdown date is 31 Aug 2026. The recommended migration is Kimi K3.

Does Moonshot v1 128K support image or vision input?

Our catalog lists Moonshot v1 128K's modalities as text; image/vision input is not among them.

Can I self-host Moonshot v1 128K?

No — Moonshot v1 128K is proprietary. Its weights are not publicly released, so it is available only through Moonshot's API (or hosted partners), not for self-hosting.

What is the API model string for Moonshot v1 128K?

The API model identifier for Moonshot v1 128K is "moonshot-v1-128k" when calling Moonshot's API.