{
  "@context": "https://schema.org",
  "@type": "Dataset",
  "name": "AI Model Capability Matrix 2026 — frontier LLMs feature-by-feature",
  "description": "Feature matrix of leading frontier LLMs (GPT-4.5, Claude 4.x, Gemini 2.5, Llama 4, Mistral Large 3, DeepSeek V4) across capabilities: max context window, output token limit, function calling, structured output, vision, audio, video, multimodal training, agent harness compatibility, fine-tuning availability, RAG-native retrieval, prompt-cache pricing tier, safety/refusal posture, regional availability. As-of date stamped per row. Replaces vague tables in vendor blog posts with structured citable data.",
  "version": "1.0.0",
  "datePublished": "2026-06-20",
  "dateModified": "2026-06-20",
  "license": "https://creativecommons.org/licenses/by/4.0/",
  "publisher": {
    "@type": "Organization",
    "name": "Slavin AI (SLAtech LTD)",
    "url": "https://www.slavin.ai"
  },
  "isAccessibleForFree": true,
  "keywords": ["LLM capabilities", "GPT-4", "Claude 4", "Gemini", "Llama", "model comparison", "context window", "function calling"],
  "methodology": "Capability values pulled from each vendor's public documentation as of dateModified. Where vendor publishes a tier (e.g., 'most' / 'all' / 'some') the dataset normalizes to {yes / partial / no}. Pricing fields cite headline list price for input/output per 1M tokens; volume discounts and committed-use pricing are out of scope.",
  "models": [
    {
      "id": "gpt-4.5",
      "vendor": "OpenAI",
      "modelFamily": "GPT-4",
      "version": "4.5 (frontier 2026)",
      "asOf": "2026-06-20",
      "contextWindowTokens": 1000000,
      "maxOutputTokens": 16384,
      "modalitiesInput": ["text", "image", "audio"],
      "modalitiesOutput": ["text", "audio (TTS)", "image (gpt-image)"],
      "functionCalling": "yes",
      "structuredOutput": "yes (JSON Schema strict mode)",
      "vision": "yes",
      "audio": "yes (input + output)",
      "video": "yes (input via frame sampling)",
      "agentHarness": "Assistants API + Realtime API",
      "fineTuningAvailable": "yes (LoRA + full)",
      "embedding": "separate (text-embedding-3 family)",
      "promptCachePricing": "50% discount on cached tokens",
      "regionalAvailability": ["US", "EU (Azure)", "UK (Azure)", "Asia (Azure)"],
      "safetyPosture": "RLHF + Spec following; refuses adult/violence by default",
      "pricingInputUsdPer1M": 5.00,
      "pricingOutputUsdPer1M": 15.00
    },
    {
      "id": "claude-4.6",
      "vendor": "Anthropic",
      "modelFamily": "Claude 4",
      "version": "4.6 Sonnet (frontier 2026)",
      "asOf": "2026-06-20",
      "contextWindowTokens": 1000000,
      "maxOutputTokens": 64000,
      "modalitiesInput": ["text", "image", "PDF (native)"],
      "modalitiesOutput": ["text"],
      "functionCalling": "yes (tool use, XML schema)",
      "structuredOutput": "yes (JSON via prompted output + validators)",
      "vision": "yes",
      "audio": "no (planned)",
      "video": "no",
      "agentHarness": "Computer Use API; native tool-use loop",
      "fineTuningAvailable": "limited (via AWS Bedrock partners)",
      "embedding": "no (uses Voyage AI partner)",
      "promptCachePricing": "10% read cost, 25% write cost",
      "regionalAvailability": ["US", "EU", "UK", "Australia (via Bedrock)"],
      "safetyPosture": "Constitutional AI; Spec following; configurable refusal",
      "pricingInputUsdPer1M": 3.00,
      "pricingOutputUsdPer1M": 15.00
    },
    {
      "id": "gemini-2.5-pro",
      "vendor": "Google",
      "modelFamily": "Gemini",
      "version": "2.5 Pro",
      "asOf": "2026-06-20",
      "contextWindowTokens": 2000000,
      "maxOutputTokens": 8192,
      "modalitiesInput": ["text", "image", "audio", "video", "PDF"],
      "modalitiesOutput": ["text", "image (Imagen)", "audio (planned)"],
      "functionCalling": "yes",
      "structuredOutput": "yes (response_mime_type=application/json)",
      "vision": "yes",
      "audio": "yes (input)",
      "video": "yes (input, up to 1 hour video)",
      "agentHarness": "Vertex AI Agents",
      "fineTuningAvailable": "yes (Vertex AI Tuning)",
      "embedding": "separate (text-embedding-005)",
      "promptCachePricing": "75% discount on cached portion",
      "regionalAvailability": ["US", "EU", "Asia (multiple GCP regions)"],
      "safetyPosture": "Multi-axis safety filters (configurable thresholds)",
      "pricingInputUsdPer1M": 2.50,
      "pricingOutputUsdPer1M": 10.00
    },
    {
      "id": "llama-4-405b",
      "vendor": "Meta",
      "modelFamily": "Llama",
      "version": "4 405B Instruct",
      "asOf": "2026-06-20",
      "contextWindowTokens": 128000,
      "maxOutputTokens": 4096,
      "modalitiesInput": ["text", "image"],
      "modalitiesOutput": ["text"],
      "functionCalling": "yes (instructed JSON)",
      "structuredOutput": "yes (via Outlines / guidance)",
      "vision": "yes (Llama-4-Vision)",
      "audio": "no (separate Llama-Voice)",
      "video": "no",
      "agentHarness": "No first-party; use Llama Agentic + open frameworks",
      "fineTuningAvailable": "yes (open weights)",
      "embedding": "separate (Llama-Embed)",
      "promptCachePricing": "infrastructure-dependent (vLLM prefix-cache)",
      "regionalAvailability": "self-hosted anywhere",
      "safetyPosture": "Llama Guard 3 layered; baseline RLHF",
      "pricingInputUsdPer1M": "self-hosted (infra cost ~$0.30-1.50 per 1M with vLLM)",
      "pricingOutputUsdPer1M": "self-hosted"
    },
    {
      "id": "mistral-large-3",
      "vendor": "Mistral AI",
      "modelFamily": "Mistral Large",
      "version": "Large 3 (2026)",
      "asOf": "2026-06-20",
      "contextWindowTokens": 256000,
      "maxOutputTokens": 8192,
      "modalitiesInput": ["text", "image"],
      "modalitiesOutput": ["text"],
      "functionCalling": "yes",
      "structuredOutput": "yes (response_format json_object / json_schema)",
      "vision": "yes (Pixtral-Large)",
      "audio": "no",
      "video": "no",
      "agentHarness": "Le Chat Agents (preview)",
      "fineTuningAvailable": "yes (la Plateforme + open-weight variants)",
      "embedding": "yes (mistral-embed)",
      "promptCachePricing": "50% cache discount",
      "regionalAvailability": ["EU (la Plateforme)", "US (Bedrock)", "self-hosted"],
      "safetyPosture": "Light guardrails; EU AI Act compliant defaults",
      "pricingInputUsdPer1M": 2.00,
      "pricingOutputUsdPer1M": 6.00
    },
    {
      "id": "deepseek-v4",
      "vendor": "DeepSeek",
      "modelFamily": "DeepSeek",
      "version": "V4 (2026)",
      "asOf": "2026-06-20",
      "contextWindowTokens": 128000,
      "maxOutputTokens": 8192,
      "modalitiesInput": ["text", "image"],
      "modalitiesOutput": ["text"],
      "functionCalling": "yes",
      "structuredOutput": "yes (JSON mode)",
      "vision": "yes",
      "audio": "no",
      "video": "no",
      "agentHarness": "Compatible with OpenAI Assistants format",
      "fineTuningAvailable": "yes (open weights + API)",
      "embedding": "yes (deepseek-embed-v2)",
      "promptCachePricing": "automatic, 75% discount",
      "regionalAvailability": ["China primary; Singapore + EU edge"],
      "safetyPosture": "Lighter alignment vs frontier US labs",
      "pricingInputUsdPer1M": 0.27,
      "pricingOutputUsdPer1M": 1.10
    }
  ],
  "lastReview": "2026-06-20",
  "nextReviewDate": "2026-09-20",
  "feedback": "Spot an inaccuracy or want a model added? Contact info@slavin.ai"
}