{
  "name": "BitByteCore Frontier AI Model Ledger",
  "description": "Hand-verified catalog of frontier and open-weight large language models — context window, list API prices (USD per 1M tokens), modality, open-weights status, and release date.",
  "version": "2026-07-04",
  "verified": "2026-06-21",
  "source": "https://bitbytecore.com/tools/ai-model-comparison",
  "license": "Free to cite with clear attribution and a link back to BitByteCore.",
  "units": {
    "price": "USD per 1M tokens (standard list rate, prompts up to ~200K tokens; see tierNote for long-context surcharges)",
    "context": "ctxK = context window in thousands of tokens (1000 = 1M)"
  },
  "count": 16,
  "models": [
    {
      "key": "claude-opus-4-8",
      "name": "Claude Opus 4.8",
      "provider": "Anthropic",
      "ctxK": 1000,
      "inPrice": 5,
      "outPrice": 25,
      "tierNote": null,
      "modality": "Text + image in",
      "open": false,
      "released": "2026",
      "strength": "Most capable Opus-tier model for complex reasoning + long-horizon agentic coding",
      "effectiveDate": "2026-06-21"
    },
    {
      "key": "claude-fable-5",
      "name": "Claude Fable 5",
      "provider": "Anthropic",
      "ctxK": 1000,
      "inPrice": 10,
      "outPrice": 50,
      "tierNote": null,
      "modality": "Text + image in",
      "open": false,
      "released": "2026-06-09",
      "strength": "Anthropic's most capable widely-released model; top-end reasoning + agentic work",
      "effectiveDate": "2026-06-21"
    },
    {
      "key": "claude-sonnet-4-6",
      "name": "Claude Sonnet 4.6",
      "provider": "Anthropic",
      "ctxK": 1000,
      "inPrice": 3,
      "outPrice": 15,
      "tierNote": "Long-context surcharge above 200K input",
      "modality": "Text + image in",
      "open": false,
      "released": "2026",
      "strength": "Best balance of speed and intelligence; strong agentic + coding workhorse",
      "effectiveDate": "2026-06-21"
    },
    {
      "key": "claude-haiku-4-5",
      "name": "Claude Haiku 4.5",
      "provider": "Anthropic",
      "ctxK": 200,
      "inPrice": 1,
      "outPrice": 5,
      "tierNote": null,
      "modality": "Text + image in",
      "open": false,
      "released": "2025-10",
      "strength": "Fastest Claude with near-frontier intelligence at low cost",
      "effectiveDate": "2026-06-21"
    },
    {
      "key": "gpt-5-5",
      "name": "GPT-5.5",
      "provider": "OpenAI",
      "ctxK": 1050,
      "inPrice": 5,
      "outPrice": 30,
      "tierNote": ">272K input billed 2x input / 1.5x output",
      "modality": "Text + image in",
      "open": false,
      "released": "2026-04-23",
      "strength": "OpenAI flagship; first OpenAI model with a 1M-token API context window",
      "effectiveDate": "2026-06-21"
    },
    {
      "key": "gpt-5-4-mini",
      "name": "GPT-5.4 mini",
      "provider": "OpenAI",
      "ctxK": 400,
      "inPrice": 0.75,
      "outPrice": 4.5,
      "tierNote": null,
      "modality": "Text + image in",
      "open": false,
      "released": "2026",
      "strength": "Cost-efficient mid-tier for high-volume tasks with solid reasoning",
      "effectiveDate": "2026-06-21"
    },
    {
      "key": "gpt-5-4-nano",
      "name": "GPT-5.4 nano",
      "provider": "OpenAI",
      "ctxK": 400,
      "inPrice": 0.2,
      "outPrice": 1.25,
      "tierNote": null,
      "modality": "Text + image in",
      "open": false,
      "released": "2026",
      "strength": "Cheapest OpenAI tier for simple, latency-sensitive, high-volume calls",
      "effectiveDate": "2026-06-21"
    },
    {
      "key": "gemini-3-1-pro",
      "name": "Gemini 3.1 Pro",
      "provider": "Google",
      "ctxK": 1000,
      "inPrice": 2,
      "outPrice": 12,
      "tierNote": ">200K billed $4/$18 (long-context tier)",
      "modality": "Multimodal (text/image/audio/video)",
      "open": false,
      "released": "2026-02-19",
      "strength": "Frontier long-context multimodal reasoning; largest practical context in class",
      "effectiveDate": "2026-06-21"
    },
    {
      "key": "gemini-3-5-flash",
      "name": "Gemini 3.5 Flash",
      "provider": "Google",
      "ctxK": 1000,
      "inPrice": 1.5,
      "outPrice": 9,
      "tierNote": null,
      "modality": "Multimodal (text/image/audio/video)",
      "open": false,
      "released": "2026-05-20",
      "strength": "Flagship-class fast model; 280+ tok/s, default in Gemini app + Search AI Mode",
      "effectiveDate": "2026-06-21"
    },
    {
      "key": "grok-4-3",
      "name": "Grok 4.3",
      "provider": "xAI",
      "ctxK": 1000,
      "inPrice": 1.25,
      "outPrice": 2.5,
      "tierNote": "Requests over ~200K tokens billed at a higher tier",
      "modality": "Text + image in",
      "open": false,
      "released": "2026",
      "strength": "xAI's fastest + most intelligent GA model; native real-time X / web search",
      "effectiveDate": "2026-06-21"
    },
    {
      "key": "deepseek-v4-pro",
      "name": "DeepSeek V4",
      "provider": "DeepSeek",
      "ctxK": 1000,
      "inPrice": 1.74,
      "outPrice": 3.48,
      "tierNote": "Frequent promo ~75% off; cache-hit input ~1/10 of list",
      "modality": "Multimodal",
      "open": true,
      "released": "2026-04-24",
      "strength": "Open-weights MoE (~32–37B active) frontier value; sparse attention",
      "effectiveDate": "2026-06-21"
    },
    {
      "key": "llama-4-maverick",
      "name": "Llama 4 Maverick",
      "provider": "Meta",
      "ctxK": 1000,
      "inPrice": 0.22,
      "outPrice": 0.85,
      "tierNote": "No first-party API; representative hosted rate",
      "modality": "Multimodal (text + image)",
      "open": true,
      "released": "2025-04-05",
      "strength": "Open-weights MoE; cheapest frontier-ish option, huge ecosystem + fine-tunability",
      "effectiveDate": "2026-06-21"
    },
    {
      "key": "qwen-3-7-max",
      "name": "Qwen 3.7 Max",
      "provider": "Alibaba",
      "ctxK": 1000,
      "inPrice": 2.5,
      "outPrice": 7.5,
      "tierNote": "Cached input ~$0.25/1M",
      "modality": "Multimodal",
      "open": false,
      "released": "2026-05",
      "strength": "Agent-first flagship; strong tool-use + multilingual (esp. Chinese) reasoning",
      "effectiveDate": "2026-06-21"
    },
    {
      "key": "kimi-k2-thinking",
      "name": "Kimi K2 Thinking",
      "provider": "Moonshot AI",
      "ctxK": 256,
      "inPrice": 0.6,
      "outPrice": 2.5,
      "tierNote": null,
      "modality": "Text (agentic)",
      "open": true,
      "released": "2025-11",
      "strength": "Open 1T-param MoE (32B active) built for long-horizon agentic reasoning",
      "effectiveDate": "2026-06-21"
    },
    {
      "key": "glm-5",
      "name": "GLM-5",
      "provider": "Zhipu / Z.ai",
      "ctxK": 200,
      "inPrice": 0.6,
      "outPrice": 1.92,
      "tierNote": null,
      "modality": "Multimodal",
      "open": true,
      "released": "2026-02-11",
      "strength": "Open MIT-licensed frontier model; very strong coding + agentic value",
      "effectiveDate": "2026-06-21"
    },
    {
      "key": "mistral-large-3",
      "name": "Mistral Large 3",
      "provider": "Mistral AI",
      "ctxK": 256,
      "inPrice": 2,
      "outPrice": 6,
      "tierNote": null,
      "modality": "Text + image",
      "open": true,
      "released": "2025-12-01",
      "strength": "Open Apache-2.0 European flagship; self-hostable, strong multilingual + coding",
      "effectiveDate": "2026-06-21"
    }
  ]
}