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"_doc": "Model roster for PIB v1.0. role: main (leaderboard + confirmatory tests), harness_control (same model through a second harness, criterion A2), retest (second run with a new seed, criterion C5). verify=true: the exact model id must be checked with the provider (e.g. `pi --list-models`) before the run; record any change here before running.",
"models": [
{
"id": "claude-haiku-5-5",
"label": "Claude Haiku 5.5",
"lab": "Anthropic",
"harness": "claude-cli",
"model": "claude-haiku-5-5",
"open_weights": false,
"role": "main"
},
{
"id": "claude-sonnet-5-5",
"label": "Claude Sonnet 5.5",
"lab": "Anthropic",
"harness": "claude-cli",
"model": "claude-sonnet-5-5",
"open_weights": false,
"role": "main"
},
{
"id": "claude-opus-5-5",
"label": "Claude Opus 5.5",
"lab": "Anthropic",
"harness": "claude-cli",
"model": "claude-opus-5-5",
"open_weights": false,
"role": "main",
"status": "paused 2026-10-09 at 379/930 samples (cost); not scored unless completed"
},
{
"id": "gpt-6-luna",
"label": "GPT-6 Luna",
"lab": "OpenAI",
"harness": "pi",
"model": "openai-codex/gpt-6-luna",
"open_weights": false,
"role": "main",
"verify": false,
"note": "Pi, ChatGPT subscription (openai-codex); id checked with `pi --list-models` on 2026-10-09"
},
{
"id": "gpt-6-astra",
"label": "GPT-6 Astra",
"lab": "OpenAI",
"harness": "pi",
"model": "openai-codex/gpt-6-astra",
"open_weights": false,
"role": "main",
"verify": false,
"note": "Pi, ChatGPT subscription (openai-codex); id checked with `pi --list-models` on 2026-10-09"
},
{
"id": "gpt-6.1-sol",
"label": "GPT-6.1 Sol",
"lab": "OpenAI",
"harness": "pi",
"model": "openai-codex/gpt-6.1-sol",
"open_weights": false,
"role": "main",
"verify": false,
"note": "Pi, ChatGPT subscription (openai-codex); id checked with `pi --list-models` on 2026-10-09"
},
{
"id": "mimo-v2.6-flash",
"label": "MiMo v2.6 Flash",
"lab": "Xiaomi",
"harness": "opencode",
"model": "opencode/mimo-v2.6-flash-free",
"open_weights": true,
"role": "main",
"verify": false,
"note": "OpenCode CLI (free tier has no key for Pi); secondary harness, see harness control"
},
{
"id": "nemotron-3-ultra",
"label": "Nemotron 3 Ultra",
"lab": "NVIDIA",
"harness": "pi",
"model": "nvidia/nvidia/nemotron-3-ultra-550b-a55b",
"open_weights": true,
"role": "main",
"verify": false,
"note": "NVIDIA build free endpoint (~40 requests/min, no daily cap)"
},
{
"id": "step-5-preview",
"label": "Step 5 Preview",
"lab": "StepFun",
"harness": "opencode",
"model": "opencode/step-5-preview-free",
"open_weights": false,
"role": "main",
"verify": false,
"note": "OpenCode CLI; secondary harness"
},
{
"id": "inkling",
"label": "Inkling",
"lab": "Thinking Machines",
"harness": "pi",
"model": "openrouter/thinkingmachines/inkling:free",
"open_weights": true,
"weights": "https://huggingface.co/thinkingmachines/Inkling",
"role": "main",
"note": "OpenRouter free tier (1,000 requests/day shared)"
},
{
"id": "gemma-4-31b",
"label": "Gemma 4 31B",
"lab": "Google",
"harness": "pi",
"model": "google/gemma-4-31b-it",
"open_weights": true,
"role": "main",
"note": "Google AI Studio free tier (Google's own endpoint); moved from OpenRouter free, see PROTOCOL §12"
},
{
"id": "nemotron-3-super",
"label": "Nemotron 3 Super 120B",
"lab": "NVIDIA",
"harness": "pi",
"model": "nvidia/nvidia/nemotron-3-super-120b-a12b",
"open_weights": true,
"role": "main",
"note": "NVIDIA build free endpoint (~40 requests/min, no daily cap)"
},
{
"id": "dots-3-note-preview",
"label": "dots.3 note preview",
"lab": "dots-studio",
"harness": "pi",
"model": "openrouter/dots-studio/dots-3-note-preview:free",
"open_weights": true,
"weights": "https://huggingface.co/dots-studio/dots3-note-prev",
"role": "main",
"note": "OpenRouter free tier (1,000 requests/day shared); phase1_tolerance 1: provider rejects base|Q4|6 every time, see PROTOCOL §12 deviation 5",
"phase1_tolerance": 1
},
{
"id": "laguna-s-2.1",
"label": "Laguna S 2.1",
"lab": "Poolside",
"harness": "pi",
"model": "openrouter/poolside/laguna-s-2.1:free",
"open_weights": true,
"weights": "https://huggingface.co/poolside/Laguna-S-2.1",
"role": "main",
"note": "OpenRouter free tier (1,000 requests/day shared)"
},
{
"id": "glm-5.3",
"label": "GLM-5.3",
"lab": "Z.ai",
"harness": "pi",
"model": "nvidia/z-ai/glm-5.3",
"open_weights": true,
"weights": "https://huggingface.co/zai-org/GLM-5.3",
"role": "main",
"note": "NVIDIA build free endpoint (~40 requests/min, no daily cap)"
},
{
"id": "kimi-k3",
"label": "Kimi K3",
"lab": "Moonshot AI",
"harness": "pi",
"model": "nvidia/moonshotai/kimi-k3",
"open_weights": true,
"weights": "https://huggingface.co/moonshotai/Kimi-K3",
"role": "main",
"note": "NVIDIA build free endpoint (~40 requests/min, no daily cap); slow queue (~2 min per call)"
},
{
"id": "muse-glimmer-30b",
"label": "Muse Glimmer 30B",
"lab": "Meta",
"harness": "pi",
"model": "nvidia/meta/muse-glimmer-30b",
"open_weights": true,
"weights": "https://huggingface.co/meta-models/Muse-Glimmer-30B",
"role": "main",
"note": "NVIDIA build free endpoint (~40 requests/min, no daily cap)"
},
{
"id": "deepseek-v4.1-flash",
"label": "DeepSeek V4.1 Flash",
"lab": "DeepSeek",
"harness": "pi",
"model": "nvidia/deepseek-ai/deepseek-v4.1-flash",
"open_weights": true,
"weights": "https://huggingface.co/deepseek-ai/DeepSeek-V4.1-Flash",
"role": "main",
"note": "Dropped 2026-10-13 at 205/930 (NVIDIA free endpoint timed out on most calls); not scored, see PROTOCOL §12 deviation 6"
},
{
"id": "gemini-flash",
"label": "Gemini 3.8 Flash",
"lab": "Google",
"harness": "pi",
"model": "google-vertex/gemini-3.8-flash",
"open_weights": false,
"role": "main",
"note": "Vertex AI (paid, global endpoint); first 18 samples via the AI Studio free tier, which allows 20 requests/day. See PROTOCOL §12"
},
{
"id": "gpt-oss-20b",
"label": "gpt-oss-20b",
"lab": "OpenAI",
"harness": "pi",
"model": "nvidia/openai/gpt-oss-20b",
"open_weights": true,
"role": "main",
"note": "NVIDIA build free endpoint; replaces gpt-oss-120b on Groq (no key, no free 120b endpoint), see PROTOCOL §12"
},
{
"id": "mistral-slot",
"label": "Mistral (dropped)",
"lab": "Mistral",
"harness": "pi",
"model": "mistral/FILL-IN",
"open_weights": false,
"role": "main",
"verify": true,
"note": "Dropped 2026-10-13: no free provider, never filled; see PROTOCOL §12 deviation 6"
},
{
"id": "gpt-6-luna@codex",
"label": "GPT-6 Luna via Codex CLI",
"lab": "OpenAI",
"harness": "codex",
"model": "gpt-6-luna",
"open_weights": false,
"role": "harness_control",
"control_of": "gpt-6-luna"
},
{
"id": "claude-haiku-5-5@retest",
"label": "Claude Haiku 5.5 (retest)",
"lab": "Anthropic",
"harness": "claude-cli",
"model": "claude-haiku-5-5",
"open_weights": false,
"role": "retest",
"control_of": "claude-haiku-5-5",
"seed": "pib-v1.0-retest"
},
{
"id": "nemotron-3-ultra@opencode",
"label": "Nemotron 3 Ultra via OpenCode CLI",
"lab": "NVIDIA",
"harness": "opencode",
"model": "opencode/nemotron-3-ultra-free",
"open_weights": true,
"role": "harness_control",
"control_of": "nemotron-3-ultra"
}
],
"_checked": "Model ids checked on 2026-10-09 against the OpenRouter and NVIDIA model lists, and with a two-turn call through Pi (DeepSeek V4.1 Flash and Gemma 4 timed out that day). open_weights: null = to confirm from the model card before publication."
}
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