Claude Fable 5$22.000/MClaude Opus 4.8$11.000/MClaude Opus 4.7$11.000/MClaude Opus 4.6$11.000/MClaude Opus 4.5$33.000/MClaude Sonnet 3.7$6.600/MClaude Opus 3$33.000/MClaude 2.1$12.800/MClaude 2$12.800/MGPT-5.5$12.500/MGPT-5.2$5.425/MGPT-5.2-Codex$5.425/MGPT-5$3.875/MGPT-4.5$97.500/MGPT-4 Turbo Preview$16.000/MGPT-4$39.000/MGPT-4-32k$78.000/Mo3$19.000/Mo3-mini$2.090/Mo4-mini$2.090/Mo1$28.500/Mo1-mini$5.700/Mo1-preview$28.500/MGemini 3.5 Pro$5.000/MGemini 3.1 Pro$5.000/MGemini 3 Pro$5.000/MGemini 2.5 Pro$3.875/MGemini 1.5 Pro$2.375/MGemini 1.0 Ultra$12.000/MGemini 1.0 Pro$0.800/MClaude Fable 5$22.000/MClaude Opus 4.8$11.000/MClaude Opus 4.7$11.000/MClaude Opus 4.6$11.000/MClaude Opus 4.5$33.000/MClaude Sonnet 3.7$6.600/MClaude Opus 3$33.000/MClaude 2.1$12.800/MClaude 2$12.800/MGPT-5.5$12.500/MGPT-5.2$5.425/MGPT-5.2-Codex$5.425/MGPT-5$3.875/MGPT-4.5$97.500/MGPT-4 Turbo Preview$16.000/MGPT-4$39.000/MGPT-4-32k$78.000/Mo3$19.000/Mo3-mini$2.090/Mo4-mini$2.090/Mo1$28.500/Mo1-mini$5.700/Mo1-preview$28.500/MGemini 3.5 Pro$5.000/MGemini 3.1 Pro$5.000/MGemini 3 Pro$5.000/MGemini 2.5 Pro$3.875/MGemini 1.5 Pro$2.375/MGemini 1.0 Ultra$12.000/MGemini 1.0 Pro$0.800/M
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Kimi K2 Thinking

text->text

Kimi K2 Thinking is a reasoning-tuned model: optimised for chain-of-thought, mathematics, and step-by-step problem solving rather than chat throughput. Available via Moonshot AI. 262K-token context. Mid-tier pricing.

Kimi K2 Thinking is a reasoning AI model from Moonshot AI. It costs $0.600 per million input tokens and $2.500 per million output tokens (blended $1.170/M), with a 262K-token context window.

Modalities textPricing source ↗Compare with another model →Estimate monthly cost →
INPUT
$0.600/M
per million input tokens
OUTPUT
$2.500/M
per million output tokens
BLENDED 70/30
$1.170/M
default reference rate · how it's calculated →
CONTEXT
262K
262,144 tokens
What it's good at
  • Step-by-step reasoning traces
  • Mathematics and proofs
  • Code synthesis with planning
  • Robust on multi-step problems
Typical use cases
  • Math problem solving
  • Hard coding tasks
  • Research-grade Q&A
  • Multi-step planning
Benchmarks
No published benchmark scores tracked for this model yet. Frontier and reasoning models from major providers have scores; smaller models and inference-host variants typically inherit the underlying open-weights score.
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Moonshot v1 32k
Balanced · 32K ctx
in $0.400/Mout $0.400/M
Moonshot v1 8k
Compact · 8K ctx
in $0.120/Mout $0.120/M
Frequently asked questions

How much does Kimi K2 Thinking cost?

Kimi K2 Thinking costs $0.600 per million input tokens and $2.500 per million output tokens, for a blended reference rate of $1.170 per million tokens.

What is Kimi K2 Thinking's context window?

Kimi K2 Thinking supports up to 262K tokens of context (262,144 tokens).

What is Kimi K2 Thinking best for?

Kimi K2 Thinking is well suited to Step-by-step reasoning traces, Mathematics and proofs and Code synthesis with planning.

Who makes Kimi K2 Thinking?

Kimi K2 Thinking is developed and served by Moonshot AI.