Head-to-Head Model Comparison

Kimi K3 vs GPT-6 Astra

Benchmarks, API Token Pricing, Context Window & Speed Comparison

Verificato dal team di ricerca di GetInfoUsUltima verifica: October 2026Politica editoriale
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AI CompareAI BenchmarkToken PricingModel CostModel SpecsSWE-bench CodingModel VersusWhich AI ModelLLM Speed & LatencyReasoning ModelsExtended ThinkingPrompt Caching ROI
Kimi K3 vs GPT-6 Astra: Benchmarks, Pricing & Speed Comparison

Kimi K3 di Moonshot AI e GPT-6 Astra di OpenAI sono due modelli di IA di riferimento. Kimi K3 offre una finestra di contesto di 1.05M token a $0.00/$0.00 per milione di token, mentre GPT-6 Astra mette a disposizione 272K token di contesto a $10.00/$50.00 per milione di token. Di seguito analizziamo benchmark, latenza e costi.

Confronto Diretto (VS)

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Kimi K3

Ragionamento a Pesi Aperti

Kimi K3 di Moonshot AI è un modello di IA progettato per il ragionamento Chain-of-Thought a pesi aperti ad alta efficienza algoritmica, con finestra di contesto da 1.0M, velocità di 58 token/s, indice di intelligenza di 93/100 e tariffa di

Intelligence Index93 / 100
Input Token:

$0.00 / 1M

Output Token:

$0.00 / 1M

Context Window:

1.05M tokens

SWE-bench Verified:

74.5%

OpenAI

GPT-6 Astra

Modello Vocale e Audio Nativo

GPT-6 Astra di OpenAI è un modello di IA progettato per la sintesi vocale naturale, l’elaborazione audio in tempo reale e la trascrizione, con finestra di contesto da 272K, velocità di 100 token/s, indice di intelligenza di 96/100 e tariffa

Intelligence Index96 / 100
Input Token:

$10.00 / 1M

Output Token:

$50.00 / 1M

Context Window:

272K tokens

SWE-bench Verified:

82.4%

Differenze Chiave a Colpo d’Occhio

  • Kimi K3 is 1.0x cheaper for API usage (input + output tokens combined).
  • Kimi K3 has a larger context window (1M vs 272K tokens).
  • GPT-6 Astra is faster at 100 tok/s vs 58 tok/s.
  • GPT-6 Astra leads on SWE-bench coding (82.4% vs 74.5%).
Need definitions for token pricing, context, or benchmarks?Explore AI Glossary →
FeatureKimi K3GPT-6 Astra
Intelligence Index
Composite reasoning & knowledge score (0-100)
9396
Provider
Moonshot AIOpenAI
Input Price
Cost per million input tokens
$0.00 / 1M$10.00 / 1M
Output Price
Cost per million output tokens
$0.00 / 1M$50.00 / 1M
Blended Price
Weighted 7:2:1 cache:input:output per 1M
$0.00 / 1M$7.70 / 1M
Context Window
Maximum input + output tokens
1.05M tokens~1,573 A4 pages of text272K tokens~408 A4 pages of text
Max Output Tokens
Per single request
131K128K
Throughput Speed
Tokens generated per second
58 tok/s100 tok/s
SWE-bench Verified
Real-world software engineering
74.5%82.4%
GPQA Diamond
Graduate-level reasoning
79%80.9%
Cached Input Price
Prompt caching discount per 1M tokens
$0.00 / 1M$1.00 / 1M

Chi vince in ogni categoria?

At-a-glance decision framework
Coding
GPT-6 Astra
+7.9% SWE-bench lead
Cost
Kimi K3
1.0x cheaper monthly runtime
Speed
GPT-6 Astra
+72% faster generation
Context
Kimi K3
1.05M tokens window

Punteggi Benchmark Verificati

Official evaluation metrics verified by independent third-party research labs.

Kimi K3GPT-6 Astra
SWE-bench Verified (Autonomous Coding)

Industry benchmark evaluating real-world GitHub issue resolution and multi-file debugging.

74.5%vs82.4%
GPQA Diamond (Doctorate-Level Science & Math)

Challenging questions created by domain experts to test complex PhD-level reasoning.

79%vs80.9%
MMLU-Pro (Multi-task Language Understanding)

Hardened reasoning and academic knowledge benchmark with reduced lucky-guess probability.

88.8%vs89.9%
LMSYS Chatbot Arena Elo

Crowdsourced human preference evaluation based on blind, head-to-head model battles.

1480ptsvs1520pts
Humanity's Last Exam (Frontier Expert Knowledge)

Extremely difficult, closed-ended questions spanning the frontier of human expert knowledge.

N/Avs18.2%
Terminal-Bench (Agentic Coding & Terminal Use)

Autonomous multi-step tasks executed inside a real command-line terminal environment.

N/Avs63.8%
SciCode (Scientific Computing)

Research-grade coding problems drawn from real scientific and numerical workloads.

N/Avs54.9%
LiveCodeBench (Competitive Coding)

Contamination-free competitive programming problems collected continuously over time.

N/Avs79.8%
AIME (Advanced Math Competition)

American Invitational Mathematics Examination — multi-step Olympiad-level reasoning.

N/Avs93.6%
Long-Context Reasoning

Accuracy when reasoning over very large inputs that fill the model context window.

N/Avs91.2%
Generation Speed (Throughput)

Tokens emitted per second during active generation streaming.

58 tok/s vs100 tok/s

Latenza e Tempo di Risposta

Time to first token (TTFT) and estimated end-to-end response time for a typical 500-token response.

Time to First Token (TTFT)Lower is better
Kimi K30.72s
GPT-6 Astra0.95s
Est. End-to-End Response (500 tokens)TTFT + generation time
Kimi K39.34s
GPT-6 Astra5.95s

Simulatore Interattivo dei Costi Token

Adjust sliders to calculate projected monthly cloud API spending with prompt caching discounts.

100K / day
10K500K1M
30K / day
5K150K300K
50% cached
0% (Cold)50%90% (Warm)
Kimi K3 Monthly API Bill
$0.00 / month
$0/1M in · $0/1M out
GPT-6 Astra Monthly API Bill
$61.50 / month
$10/1M in · $50/1M out
Kimi K3 saves approximately $61.50 / month (100%) under this workload.1.0x Savings

Kimi K3 · Strengths & Key Advantages

  • Finestra di contesto da 1.0M con capacità massima di output fino a 131K token (SWE-bench Verified 74.5% · GPQA Diamond 79%)
  • Throughput elevato di 58 token/secondo con latenza al primo token (TTFT) di soli 720 ms
  • Pesi aperti (2.8T total (MoE)) pronti per il self-hosting locale o su cloud privato tramite vLLM, SGLang o Ollama
Considerations & Trade-offs
  • Richiede server GPU dedicati con sufficiente memoria VRAM per l’esecuzione locale a piena precisione
  • Nelle dimostrazioni scientifiche più estreme, i modelli di ragionamento pesante dedicati offrono maggiore profondità

GPT-6 Astra · Strengths & Key Advantages

  • Finestra di contesto da 272K con capacità massima di output fino a 128K token (SWE-bench Verified 82.4% · GPQA Diamond 80.9%)
  • Throughput elevato di 100 token/secondo con latenza al primo token (TTFT) di soli 950 ms
  • Economia API competitiva ($10/$50 per 1M di token) con supporto per prompt caching, tool calling e output JSON strutturati
Considerations & Trade-offs
  • Modello cloud proprietario chiuso; non consente il download locale dei pesi per l’esecuzione offline
  • Per volumi di traffico elevati in produzione si consiglia di attivare il prompt caching e la Batch API

Token Use & Task Economics

Estimated cost and token consumption to complete one representative agentic task.

MetricKimi K3GPT-6 Astra
Cost per Task
Estimated USD to finish one task
$2.00$2.15
Output Tokens / Task
Tokens generated per task
35K58K
Reasoning Tokens / Task
Thinking tokens burned per task
18K32K

Specifiche Tecniche

Architecture, release timeline, capabilities, and modalities.

FeatureKimi K3GPT-6 Astra
Official API Model ID (SDK)kimi-k3gpt-6-astra
API ProtocolOpenAI-Compatible REST / vLLM / SGLang / HuggingFace TGIOpenAI Responses API & Chat Completions v1
Release Date2026-072026-09
Knowledge CutoffMarch 2026June 2026
ArchitectureColossus-Scale Multimodal Sparse Mixture-of-ExpertsOmni-Adaptive Autoregressive with Dynamic CoT
Parameters2.8T total (MoE)Confidential
Enterprise Rate Limits (RPM / TPM)Unlimited (Hardware-bound on self-hosted GPU) / 10,000 RPM Cloud · Unlimited local throughput / 10M+ TPM Managed Cloud10,000 – 30,000 RPM (Tier 5 Enterprise) · 800,000 – 2,000,000 TPM
Long-Context Tier (>128K/200K)Free across full context window (only KV-cache VRAM scales)Flat rate ($10/1M in) across full 272K window
Prompt Cache Policy & TTLAutomatic prefix KV-caching in vLLM / SGLang (0 cost)Automatic prefix caching at $1/1M (no extra cache-write fee)
Computer Use / GUI AgentSupported (Screen coordinate grounding, browser & desktop GUI action loops)Supported (Screen coordinate grounding, browser & desktop GUI action loops)
MCP & Parallel Tool CallingNative MCP Client/Server ready · Parallel function calling · 100% Strict JSON SchemaNative MCP Client/Server ready · Parallel function calling · 100% Strict JSON Schema
Web Search Grounding & SandboxSupported via external Tavily/Exa Search & E2B/Docker Sandbox toolsNative Web Search tool + Hosted Code Interpreter & File Search RAG
Official Fine-Tuning SupportFull Weights SFT, LoRA, QLoRA, DPO & GRPO RL (Unsloth / Axolotl / Llama-Factory)Supervised Fine-Tuning (SFT), Direct Preference (DPO) & Reinforcement Fine-Tuning (RFT)
Multimodal Token BillingText BPE (~4 chars/token) · Vision (~258–765 tokens per image tile)Text BPE (~4 chars/token) · Vision (~258–765 tokens per image tile) · Audio (~25–32 tokens/sec)
Quantization & Min GPU VRAMBF16 / FP16, FP8 Dynamic, INT4 AWQ / GPTQ, GGUF (Q4_K_M / Q8_0) · 1736 GB VRAM (4-bit Quantized) · 6020 GB VRAM (Native BF16)Cloud-Hosted Proprietary (FP8 / BF16 Tensor Core Cluster) · Zero Local VRAM Required (100% Serverless Cloud API)
Safety & Frontier ClassificationOpen-Weights System Card + Customizable Guardrail Layer (Llama Guard / ShieldGemma)OpenAI Preparedness Framework Audited & System Card Published
Enterprise Compliance (ZDR/HIPAA/SOC2)100% Air-Gapped On-Premises / Private VPC · Full HIPAA, GDPR & SOC2 ControlSOC2 Type II · GDPR · Zero Data Retention (ZDR) & HIPAA BAA Available on Enterprise Tier
Input Modalitiestext, visiontext, vision, audio
Output Modalitiestexttext, audio

Kimi K3 vs GPT-6 Astra: Risposte Rapide (FAQ)

Which is more intelligent, Kimi K3 or GPT-6 Astra?

GPT-6 Astra is more intelligent. It scores 96 compared with 93 on the composite Intelligence Index.

Which model is faster?

GPT-6 Astra is faster, generating 100 tokens per second compared with 58 tokens per second.

Which model is cheaper to run?

Kimi K3 is cheaper at $0.00 per 1M tokens blended, compared with $7.70 (7:2:1 cache:input:output ratio).

Which model has lower latency?

Kimi K3 has lower latency, with a time to first token of 0.72s compared with 0.95s.

Which model has a larger context window?

Kimi K3 has a larger context window, supporting 1.05M tokens compared with 272K tokens.

Verdetto

Sia Kimi K3 (Ideale per il ragionamento Chain-of-Thought a pesi aperti ad alta efficienza algoritmica, sistemi RAG aziendali e integrazioni API scalabili.) sia GPT-6 Astra (Ideale per la sintesi vocale naturale, l’elaborazione audio in tempo reale e la trascrizione, sistemi RAG aziendali e integrazioni API scalabili.) eccellono in produzione: GPT-6 Astra guida nei benchmark di ragionamento e programmazione, GPT-6 Astra garantisce una generazione più rapida e Kimi K3 offre il miglior rapporto qualità-prezzo per carichi API elevati.

Domande Frequenti (FAQ)

Quale modello è migliore per coding e ragionamento, Kimi K3 o GPT-6 Astra?+

Nell’indice di intelligenza composito e nei benchmark di programmazione prevale GPT-6 Astra. Consulta i punteggi SWE-bench e GPQA qui sopra per tutti i dettagli.

Qual è la differenza di prezzo API tra Kimi K3 e GPT-6 Astra?+

Kimi K3 costa $0.00 / $0.00 per milione di token di input/output, mentre GPT-6 Astra costa $10.00 / $50.00. Nel costo combinato, Kimi K3 risulta più economico.

Quale modello ha la finestra di contesto più ampia e la velocità maggiore?+

Kimi K3 supporta 1.05M token di contesto contro 272K token di GPT-6 Astra, mentre GPT-6 Astra offre una velocità di generazione superiore.

AI Terminology & Guide
Explore Glossary →

Understand key metrics like context window, token pricing, reasoning mode, and SWE-bench scores in our comprehensive AI glossary.

Benchmark scores, token prices, and rate limits evolve rapidly as AI labs release model updates. Always verify current specifications and pricing on the official provider documentation.

Fonti ufficiali: Documentazione API ufficiale di Moonshot AI e OpenAI, schede di sistema e benchmark indipendenti (2026).