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Models / xAI

Grok 4.3

xai/grok-4.3

xAI's default Grok for chat, coding, agentic tools, and lower hallucination risk

Input modalitiesT
Output modalitiesT
Source-linkedgrokClosed weightsReleased 2026-04-17
Report data
Context window1M
Maximum output30K
Provider offers17
Knowledge cutoffUndisclosed
Capabilities

What this model supports

ReasoningYes
Tool callingYes
Structured outputYes
AttachmentsYes
Temperature controlYes
Open weightsNo
Creator
xAI
Family
grok
Modalities
Image, Pdf, Text
License
Not documented
Release date
2026-04-17
Model ID
xai/grok-4.3
Market availability

Provider pricing

Report price →
Providers offering Grok 4.3
ProviderProvider model IDContextInput / 1MOutput / 1MCached / 1MFeaturesAll pricing
Kenari logoKenarigrok-4-31M$0 if offer.cost.input is defined else '—'}}$0 if offer.cost.output is defined else '—'}}$0 if offer.cost.cache_read is defined else '—'}}R T S
View
{
  "input": 0,
  "output": 0
}
AnyAPI logoAnyAPIxai/grok-4.31M$0 if offer.cost.input is defined else '—'}}$0 if offer.cost.output is defined else '—'}}$0 if offer.cost.cache_read is defined else '—'}}R T S
View
{}
OpenRouter logoOpenRouterx-ai/grok-4.31M$1.25 if offer.cost.input is defined else '—'}}$2.5 if offer.cost.output is defined else '—'}}$0.2 if offer.cost.cache_read is defined else '—'}}R T S
View
{
  "cache_read": 0.2,
  "context_over_200k": {
    "cache_read": 0.4,
    "input": 2.5,
    "output": 5
  },
  "input": 1.25,
  "output": 2.5,
  "tiers": [
    {
      "cache_read": 0.4,
      "input": 2.5,
      "output": 5,
      "tier": {
        "size": 200000,
        "type": "context"
      }
    }
  ]
}
Vercel AI Gateway logoVercel AI Gatewayxai/grok-4.31M$1.25 if offer.cost.input is defined else '—'}}$2.5 if offer.cost.output is defined else '—'}}$0.2 if offer.cost.cache_read is defined else '—'}}R T S
View
{
  "cache_read": 0.2,
  "input": 1.25,
  "output": 2.5
}
xAI logoxAIgrok-4.31M$1.25 if offer.cost.input is defined else '—'}}$2.5 if offer.cost.output is defined else '—'}}$0.2 if offer.cost.cache_read is defined else '—'}}R T S
View
{
  "cache_read": 0.2,
  "context_over_200k": {
    "cache_read": 0.4,
    "input": 2.5,
    "output": 5
  },
  "input": 1.25,
  "output": 2.5,
  "tiers": [
    {
      "cache_read": 0.4,
      "input": 2.5,
      "output": 5,
      "tier": {
        "size": 200000,
        "type": "context"
      }
    }
  ]
}
Auriko logoAurikogrok-4.31M$1.25 if offer.cost.input is defined else '—'}}$2.5 if offer.cost.output is defined else '—'}}$0.2 if offer.cost.cache_read is defined else '—'}}R T S
View
{
  "cache_read": 0.2,
  "context_over_200k": {
    "cache_read": 0.4,
    "input": 2.5,
    "output": 5
  },
  "input": 1.25,
  "output": 2.5,
  "tiers": [
    {
      "cache_read": 0.4,
      "input": 2.5,
      "output": 5,
      "tier": {
        "size": 200000,
        "type": "context"
      }
    }
  ]
}
ZenMux logoZenMuxx-ai/grok-4.31M$1.25 if offer.cost.input is defined else '—'}}$2.5 if offer.cost.output is defined else '—'}}$0.2 if offer.cost.cache_read is defined else '—'}}R T S
View
{
  "cache_read": 0.2,
  "cache_write": 0,
  "context_over_200k": {
    "cache_read": 0.4,
    "cache_write": 0,
    "input": 2.5,
    "output": 5
  },
  "input": 1.25,
  "output": 2.5,
  "tiers": [
    {
      "cache_read": 0.4,
      "cache_write": 0,
      "input": 2.5,
      "output": 5,
      "tier": {
        "size": 200000,
        "type": "context"
      }
    }
  ]
}
FastRouter logoFastRouterx-ai/grok-4.31M$1.25 if offer.cost.input is defined else '—'}}$2.5 if offer.cost.output is defined else '—'}}$0 if offer.cost.cache_read is defined else '—'}}R T S
View
{
  "input": 1.25,
  "output": 2.5
}
AIHubMix logoAIHubMixgrok-4.31M$1.25 if offer.cost.input is defined else '—'}}$2.5 if offer.cost.output is defined else '—'}}$0.2 if offer.cost.cache_read is defined else '—'}}R T S
View
{
  "cache_read": 0.2,
  "context_over_200k": {
    "cache_read": 0.4,
    "input": 2.5,
    "output": 5
  },
  "input": 1.25,
  "output": 2.5,
  "tiers": [
    {
      "cache_read": 0.4,
      "input": 2.5,
      "output": 5,
      "tier": {
        "size": 200000,
        "type": "context"
      }
    }
  ]
}
DaoXE logoDaoXEgrok-4.31M$1.25 if offer.cost.input is defined else '—'}}$2.5 if offer.cost.output is defined else '—'}}$0.2 if offer.cost.cache_read is defined else '—'}}R T S
View
{
  "cache_read": 0.2,
  "input": 1.25,
  "output": 2.5
}
Merge Gateway logoMerge Gatewayxai/grok-4.31M$1.25 if offer.cost.input is defined else '—'}}$2.5 if offer.cost.output is defined else '—'}}$0.2 if offer.cost.cache_read is defined else '—'}}R T S
View
{
  "cache_read": 0.2,
  "context_over_200k": {
    "cache_read": 0.4,
    "input": 2.5,
    "output": 5
  },
  "input": 1.25,
  "output": 2.5,
  "tiers": [
    {
      "cache_read": 0.4,
      "input": 2.5,
      "output": 5,
      "tier": {
        "size": 200000,
        "type": "context"
      }
    }
  ]
}
OrcaRouter logoOrcaRoutergrok/grok-4.31M$1.25 if offer.cost.input is defined else '—'}}$2.5 if offer.cost.output is defined else '—'}}$0.2 if offer.cost.cache_read is defined else '—'}}R T S
View
{
  "cache_read": 0.2,
  "context_over_200k": {
    "cache_read": 0.4,
    "input": 2.5,
    "output": 5
  },
  "input": 1.25,
  "output": 2.5,
  "tiers": [
    {
      "cache_read": 0.4,
      "input": 2.5,
      "output": 5,
      "tier": {
        "size": 200000,
        "type": "context"
      }
    }
  ]
}
LLM Gateway logoLLM Gatewaygrok-4-31M$1.25 if offer.cost.input is defined else '—'}}$2.5 if offer.cost.output is defined else '—'}}$0.312 if offer.cost.cache_read is defined else '—'}}R T S
View
{
  "cache_read": 0.3125,
  "context_over_200k": {
    "cache_read": 0.4,
    "input": 2.5,
    "output": 5
  },
  "input": 1.25,
  "output": 2.5,
  "tiers": [
    {
      "cache_read": 0.4,
      "input": 2.5,
      "output": 5,
      "tier": {
        "size": 200000,
        "type": "context"
      }
    }
  ]
}
Abacus logoAbacusgrok-4.31M$1.25 if offer.cost.input is defined else '—'}}$2.5 if offer.cost.output is defined else '—'}}$0.2 if offer.cost.cache_read is defined else '—'}}R T S
View
{
  "cache_read": 0.2,
  "input": 1.25,
  "output": 2.5
}
Amazon Bedrock logoAmazon Bedrockxai.grok-4.31M$1.25 if offer.cost.input is defined else '—'}}$2.5 if offer.cost.output is defined else '—'}}$0.2 if offer.cost.cache_read is defined else '—'}}R T S
View
{
  "cache_read": 0.2,
  "input": 1.25,
  "output": 2.5
}
FrogBot logoFrogBotgrok-4-31M$1.25 if offer.cost.input is defined else '—'}}$2.5 if offer.cost.output is defined else '—'}}$0.2 if offer.cost.cache_read is defined else '—'}}R T S
View
{
  "cache_read": 0.2,
  "input": 1.25,
  "output": 2.5
}
Venice AI logoVenice AIgrok-4-31M$1.42 if offer.cost.input is defined else '—'}}$2.83 if offer.cost.output is defined else '—'}}$0.23 if offer.cost.cache_read is defined else '—'}}R T S
View
{
  "cache_read": 0.23,
  "context_over_200k": {
    "cache_read": 0.45,
    "input": 2.83,
    "output": 5.67
  },
  "input": 1.42,
  "output": 2.83,
  "tiers": [
    {
      "cache_read": 0.45,
      "input": 2.83,
      "output": 5.67,
      "tier": {
        "size": 200000,
        "type": "context"
      }
    }
  ]
}
Evidence

Published benchmark results

Artificial Analysis Intelligence Index vs top 5 models
GPT-5.6 Sol
58.9
GPT-5.6 Terra
55.0
Grok 4.3
53.0
GPT-5.6 Luna
51.2
North Mini Code
27.6
GDPval-AA vs top 5 models
Claude Fable 5
1932.0
Gemini 3.5 Flash
1656.0
Grok 4.3
1500.0
Gemini 3.1 Pro Preview
1314.0
North Mini Code
14.0
IFBench vs top 2 models
Nemotron 3 Ultra 550B A55B
81.7
Grok 4.3
81.0
τ²-Bench Telecom vs top 3 models
GPT-5.5
98.0
Grok 4.3
98.0
North Mini Code
37.0