API cost decision in 10 seconds

NewMoonshotAI Kimi Latest vs Cogito v2.1 671B

Pick Cogito v2.1 671B for lower cost; pick MoonshotAI Kimi Latest only if the larger context window matters more.

Pricing data updated:  Prices normalized to USD per 1M tokens Sample workload: 1M input + 500K output

Budget verdict

Pick Cogito v2.1 671B for lower cost; pick MoonshotAI Kimi Latest only if the larger context window matters more.

On the standard 1M input plus 500K output workload, Cogito v2.1 671B is estimated at $1.88 vs $2.48 for MoonshotAI Kimi Latest, saving $0.6 (24.2% lower).

Cost-first pickCogito v2.1 671B
Context-first pickMoonshotAI Kimi Latest
Sample savings$0.624.2%
10x traffic gap$6

MoonshotAI Kimi Latest has more context, but Cogito v2.1 671B saves $0.6 on the standard workload. At 10x that traffic, the same price gap is about $6. Use the calculator below to replace the sample workload with your own token volume.

Cost sensitivity

Workload Sensitivity

Same prices, different token mixes.

Cost winner changes by workload shape: input-heavy / RAG favors MoonshotAI Kimi Latest, balanced workload favors Cogito v2.1 671B, and output-heavy chatbot favors Cogito v2.1 671B.

Workload shapeToken mixBetter pickMoonshotAI Kimi LatestCogito v2.1 671B
Input-heavy / RAG5M input + 500K outputMoonshotAI Kimi Latest$5.39$6.88
Balanced workload1M input + 1M outputCogito v2.1 671B$4.22$2.5
Output-heavy chatbot1M input + 5M outputCogito v2.1 671B$18.18$7.5
Cheaper input MoonshotAI Kimi Latest $0.73 vs $1.25 / 1M

MoonshotAI Kimi Latest is $0.52 cheaper per 1M input tokens (41.6% lower; 1.71x difference).

Cheaper output Cogito v2.1 671B $3.49 vs $1.25 / 1M

Cogito v2.1 671B is $2.24 cheaper per 1M output tokens (64.2% lower; 2.79x difference).

Larger context MoonshotAI Kimi Latest 262.14K vs 128K

MoonshotAI Kimi Latest has 134.14K more context (2.05x larger).

Sample workload Cogito v2.1 671B $2.48 vs $1.88

Cogito v2.1 671B is $0.6 cheaper on the standard workload (24.2% lower).

Estimate your workload cost

Your Workload Cost

Prices are normalized to USD per 1M tokens.
MoonshotAI Kimi Latest Calculating… Estimated API cost
Cogito v2.1 671B Calculating… Estimated API cost
Cheaper for this workload Calculating… Difference: calculating…

This estimate uses normalized public API pricing per 1M tokens. It is a planning aid, not a billing quote. Verify provider pricing, limits, and terms before production use.

Quick Decision

Verdict

MoonshotAI Kimi Latest has the lower input price; Cogito v2.1 671B has the lower output price; MoonshotAI Kimi Latest offers the larger context window. For the 1M input plus 500K output sample, Cogito v2.1 671B is cheaper for the standard workload.

For a 1M input token plus 500K output token workload, the estimated API cost is $2.48 for MoonshotAI Kimi Latest and $1.88 for Cogito v2.1 671B.

Best Fit

Choose MoonshotAI Kimi Latest when you care most about lower input-token price, and larger context window.

Choose Cogito v2.1 671B when you care most about lower output-token price.

Decision Notes
  • On the standard 1M input plus 500K output workload, Cogito v2.1 671B is estimated at $1.88 vs $2.48 for MoonshotAI Kimi Latest, saving $0.6 (24.2% lower).
  • Cogito v2.1 671B is $0.6 cheaper on the standard workload (24.2% lower).
  • MoonshotAI Kimi Latest is $0.52 cheaper per 1M input tokens (41.6% lower; 1.71x difference).
  • Cogito v2.1 671B is $2.24 cheaper per 1M output tokens (64.2% lower; 2.79x difference).
  • MoonshotAI Kimi Latest has 134.14K more context (2.05x larger).
Head-to-Head Specs
FeatureNewMoonshotAI Kimi Latest
(MoonshotAI)
Cogito v2.1 671B
(Deep Cogito)
Input Price
prompt tokens per 1M
$0.73$1.25
Completion Price
per 1M tokens
$3.49$1.25
Sample Workload Cost
1M input + 500K output
$2.48$1.88
Context Window262.14K128K
Release Date

Use-Case Decision Matrix

Use caseBetter pickWhy
Budget-constrained productionCogito v2.1 671BOn the standard 1M input plus 500K output workload, Cogito v2.1 671B is estimated at $1.88 vs $2.48 for MoonshotAI Kimi Latest, saving $0.6 (24.2% lower).
High-volume input processingMoonshotAI Kimi LatestLower prompt-token price matters most when prompts, retrieved passages, or documents dominate the bill.
Long responses and chatbotsCogito v2.1 671BLower output-token price matters most when assistants generate many completion tokens.
RAG or long-document workMoonshotAI Kimi LatestA larger context window leaves more room for retrieved passages, conversation history, or source files.

Related Alternatives

Same-provider lower-cost swaps
  • Kimi K2.5 can replace MoonshotAI Kimi Latest when lower sample workload cost matters most: $1.35.
  • Kimi K2 0711 can replace MoonshotAI Kimi Latest when lower sample workload cost matters most: $1.72.
  • Kimi K2 Thinking can replace MoonshotAI Kimi Latest when lower sample workload cost matters most: $1.85.
  • Kimi K2 0905 can replace MoonshotAI Kimi Latest when lower sample workload cost matters most: $1.85.
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Popular competitors
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MoonshotAI Kimi Latest

This model always redirects to the latest model in the MoonshotAI Kimi family.

Cogito v2.1 671B

Cogito v2.1 671B MoE represents one of the strongest open models globally, matching performance of frontier closed and open models. This model is trained using self play with reinforcement learning...