MoonshotAI: Kimi K2 0905 vs OpenAI: o3
MoonshotAI: Kimi K2 0905 is cheaper than OpenAI: o3 by about 75% on a blended (75% input / 25% output) basis. MoonshotAI: Kimi K2 0905 charges $0.500000 / $2.000000 per 1M input/output tokens; OpenAI: o3 charges $2.000000 / $8.000000.
| Field | MoonshotAI: Kimi K2 0905 | OpenAI: o3 |
|---|---|---|
| Input $/Mtok | $0.500000 | $2.000000 |
| Output $/Mtok | $2.000000 | $8.000000 |
| Cache read $/Mtok | – | $0.500000 |
| Cache write $/Mtok | – | – |
| Input $/Mchar | n/a | 0.563428 |
| Output $/Mchar | n/a | 2.253712 |
| Context window | 262144 | 200000 |
| Tokenizer | – | o200k |
| Confidence? | aggregator | api |
| Source | litellm | openrouter |
Confidence: official = vendor pricing page · api = OpenRouter per-host · aggregator = community list, may lag · unreviewed = automatic extraction awaiting review. When sources disagree the most authoritative wins. Details: /methodology#confidence
Price history
Same workload, monthly cost
Illustrative monthly cost at 10M tokens/month, split per workload preset. Not a substitute for the calculator, which uses your own volume, cache and batch assumptions.
| Workload | MoonshotAI: Kimi K2 0905 | OpenAI: o3 |
|---|---|---|
| Coding agent | $5.75 | $23.00 |
| RAG chat | $7.25 | $29.00 |
| Summarisation (batch) | $6.50 | $26.00 |
| Classification | $5.30 | $21.20 |
| Chat assistant | $11.00 | $44.00 |
| Content generation | $17.00 | $68.00 |
Cite this page
MoonshotAI: Kimi K2 0905 vs OpenAI: o3: $0.500000/$2.000000 vs $2.000000/$8.000000 per 1M tokens as of 2026-10-04. Token Barometer by Dejan Strbad, https://tokenbarometer.com, data CC BY 4.0. https://tokenbarometer.com/compare/moonshot_kimi-k2-vs-openai_o3
MoonshotAI: Kimi K2 0905 page | OpenAI: o3 page | Open in calculator