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Put up to 4 models beside each other — token prices, context windows, capabilities and provider, from the same catalogue the model pages read.

  1. Kimi K3.1 ProMoonShot AIRemove
  2. Gemini 3.1 Flash Lite Image (Google Vertex AI)GoogleRemove
  3. GPT TranscribeOpenAIRemove
kimi-k3.1-pro vs gemini-3.1-flash-lite-image-vertex vs gpt-transcribe
AttributeKimi K3.1 Prokimi-k3.1-proGemini 3.1 Flash Lite Image (Google Vertex AI)gemini-3.1-flash-lite-image-vertexGPT Transcribegpt-transcribe
Pricing
Input$2.00 / 1M—— Not priced per input token
Output$10.00 / 1M—— Not priced per output token
Cache Write (5m)$2.00 / 1MNot applicableNot applicable
Cache Write (1h)$2.00 / 1MNot applicableNot applicable
Cache Read$2.00 / 1MNot applicableNot applicable
Web Search$0 / 1M—$0 / 1M
Request—$0.0336 / request—
Billing—Pay Per Request—
Context
Max context1MN/AN/A
Max outputN/AN/AN/A
Capabilities
VisionYesYesNo
Function CallingYesNoNo
JSON ModeYesNoNo
StreamingYesNoNo
Catalogue
ProviderMoonShot AIGoogleOpenAI
Categorychatimagevoice
Charge typePay As You GoPay Per RequestPay As You Go
Released——2026-08-05
Description
SummaryKimi K3.1 Pro is Moonshot AI's flagship open-weight multimodal reasoning model, building on Kimi K3 with enhanced post-training for advanced reasoning and autonomous task execution. It features a 1M-token context window and native image and video understanding, enabling complex, long-context multimodal workflows. Optimized for long-horizon coding, 3D creation, financial research, and end-to-end agentic knowledge work, Kimi K3.1 Pro is well suited for autonomous software engineering, multimodal analysis, and complex professional workflows that require sustained reasoning and reliable execution.Gemini 3.1 Flash Lite Image served from Google Vertex AI. Billed per image at US$0.0336. Call it through /v1/chat/completions with stream set to false; the image is returned in the message content as a base64 data URI. Maximum output resolution is 1K. A request for a larger size returns a 1K image with the same aspect ratio at the same price. When a size is reduced, the response carries an X-Image-Resolution-Capped header with the requested and delivered size.OpenAI GPT Transcribe speech-to-text. Billed per second of audio.