Friday, August 21, 2026 · No. 390Prices synced 4 hours ago
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The AI Model Price Index

Kimi K3 Fast

by Fireworks AI · family kimi-k3 · listed Jul 2026RTVW

Multimodal Kimi model with 1M context and toggleable max-effort thinking for long-horizon agent work

Current rates USD per 1M tokens

Input$4.50
Output$22.50
Cache read$0.45
Cache write—

Against the market

Input price vs. maker flagships ($/1M tokens)
DeepSeek V4 ProDeepSeek V4 Pro: $0.435 per 1M tokens$0.435Gemini 3.7 FlashGemini 3.7 Flash: $0.75 per 1M tokens$0.75Mistral Medium 3.5Mistral Medium 3.5: $1.50 per 1M tokens$1.50Grok 4.6Grok 4.6: $2.00 per 1M tokens$2.00Qwen3.8 MaxQwen3.8 Max: $2.00 per 1M tokens$2.00Kimi K3 FastKimi K3 Fast: $4.50 per 1M tokens$4.50Claude Opus 5Claude Opus 5: $5.00 per 1M tokens$5.00GPT-5.6 SolGPT-5.6 Sol: $5.00 per 1M tokens$5.00
Output price vs. maker flagships ($/1M tokens)
DeepSeek V4 ProDeepSeek V4 Pro: $0.87 per 1M tokens$0.87Gemini 3.7 FlashGemini 3.7 Flash: $3.75 per 1M tokens$3.75Grok 4.6Grok 4.6: $6.00 per 1M tokens$6.00Qwen3.8 MaxQwen3.8 Max: $6.00 per 1M tokens$6.00Mistral Medium 3.5Mistral Medium 3.5: $7.50 per 1M tokens$7.50Kimi K3 FastKimi K3 Fast: $22.50 per 1M tokens$22.50Claude Opus 5Claude Opus 5: $25.00 per 1M tokens$25.00GPT-5.6 SolGPT-5.6 Sol: $30.00 per 1M tokens$30.00

On the record

Model id
accounts/fireworks/routers/kimi-k3-fast
Context window
1.0M tokens
Max output
131K tokens
Input modalities
text, image
Output modalities
text
Reasoning
yes
Tool calls
yes
Open weights
yes
Knowledge cutoff
—
Released
2026-07-27
Last updated
2026-07-27
Provider docs
fireworks.ai/docs/

Back of the envelope

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