// Moonshot (Kimi)
Kimi K2.5
A Moonshot (Kimi) model. 3 prices across 3 channels side by side, each with its source and check date – plus specs, licence, speed and benchmarks.
- Official in/out per 1M
- —
- Lowest (AtlasCloud)
- $0.49 / $2.5
- Context
- 262K
- AA index
- 23.5
Prices checked 2026-10-22Official sources linked on every rowNo estimatesCheapest LLM APIs →
01Specs at a glance
Official values first; gaps filled from OpenRouter’s API where the vendor page is silent.
| Vendor | Moonshot (Kimi) |
|---|---|
| Context window | 262K (262,144 tokens) |
| Max output | 236K |
| Input | Text · Image |
| Output | Text |
| Tool calling / JSON | Yes / Yes |
| Weights & licence | Open weights · modified-mit (custom) · Hugging Face |
| Parameters | 1.03T (from weight files) |
| Released | Jan 27, 2026 |
| Model IDs | moonshotai/kimi-k2.5 |
02Prices on 3 channels
Per 1M tokens, in the currency each source publishes (1 USD = 6.7 CNY for the blended column). Sorted: official first, then cheapest.
| Channel | Source | Input | Output | Cache hit | Blended $ | Context | Notes |
|---|---|---|---|---|---|---|---|
| AtlasCloud · int4 Via OpenRouter / provider listed there | OpenRouter 10-22 | $0.49 | $2.5 | $0.2 | 0.993 | 262K | AtlasCloud price as listed on OpenRouter (pass-through; quantization=int4; discount field=0); not checked against AtlasCloud's own page |
| SiliconFlow · int4 Via OpenRouter / provider listed there | OpenRouter 10-22 | $0.5 | $2.5 | $0.15 | 1 | 262K | SiliconFlow price as listed on OpenRouter (pass-through; quantization=int4; discount field=0); not checked against SiliconFlow's own page |
| Novita · unknown Via OpenRouter / provider listed there | OpenRouter 10-22 | $0.57 | $2.85 | $0.095 | 1.14 | 262K | Novita price as listed on OpenRouter (pass-through; quantization=unknown; discount field=0.05); not checked against Novita's own page |
“Official” = vendor pricing page; “Platform” = the platform’s own pricing page; “OpenRouter” = price listed on OpenRouter, not checked on the platform’s site. Click a source tag to open the original page.
03Where you can use it
Derived only from the price sources above. Country restrictions are set by each vendor – check their terms before you sign up.
- Via OpenRouter / provider listed there
AtlasCloud · SiliconFlow · Novita - Self-host the open weights
GPU / VRAM sizing and build plans→
04Performance
All results →Speed and AA index from Artificial Analysis public leaderboards (not our own tests); benchmark scores from our benchmark library, best result per benchmark.
- AA indexKimi K2.5 (Reasoning)
- 23.5
- Output speed (median)
- 57 tok/s
- Time to first token
- 1.74s
- AA index per $ (blended)
- 23.64
| Benchmark | Best score | Source | Date |
|---|---|---|---|
| LMArena Text | 1450 | official | 2026-10-08 |
| LMArena WebDev | 1437 | official | 2026-10-08 |
| LMArena Vision | 1252 | official | 2026-10-02 |
| GPQA Diamond | 87.6% | independent | 2026-02-02 |
| SWE-bench Verified | 73.8% | independent | 2026-02-17 |
| AIME (OTIS Mock AIME 2024–2025) | 92.2% | independent | 2026-02-02 |
| Humanity's Last Exam | 24.4% | compiled | 2026-01-27 |
| OSWorld (Verified) | 63.3% | official | 2026-02-03 |
| Terminal-Bench 2.0 | 43.2% | official | 2026-01-27 |
05Price changes we recorded
All price changes →From our daily re-checks of the sources above.
No price change recorded since we started tracking (2026-10-10).
06More from Moonshot (Kimi)
FAQ
How much does the Kimi K2.5 API cost?
There is no official pay-as-you-go price in our data. The lowest listed price is $0.49 / $2.5 on AtlasCloud.
What is the context window of Kimi K2.5?
262K tokens of context, up to 236K output tokens. Platforms may cap it lower – see the table.
Is Kimi K2.5 open source?
Yes, the weights are published on Hugging Face (moonshotai/Kimi-K2.5). Licence: modified-mit (custom).