Add provider comparison chart with privacy and green-energy gradations

models.md

@@ -15,19 +15,46 @@ but *where* it runs. The provider part tells you the value it stands for:
 | **GreenPT** | *green* | Models served on 100% renewable energy in the EU. Cleaner energy, but standard (non-enclave) hosting — privacy here is a policy commitment, not architectural. |
 | **PublicAI** | *public* | (coming soon — publicly developed models.) |
 
+## Provider comparison
+
+Models differ along two independent axes: **privacy** (how protected your
+prompts and responses are) and **green energy** (how the compute is powered).
+These are gradations, not binary switches — and no provider today is best on
+both.
+
+| Provider | Privacy | Green energy | What that means |
+|---|---|---|---|
+| **Tinfoil** | **Strongest — architectural** | Not a green claim | Runs in hardware enclaves (TEEs) with end-to-end encryption (EHBP), verifiable via remote attestation. Neither we nor Tinfoil can read your prompts or responses at inference time. Energy mix is not disclosed. |
+| **GreenPT** | **Policy-based** | **Strongest — 100% renewable** | Standard (non-enclave) hosting in the EU; privacy rests on GreenPT's commitments and EU data rules, not on cryptography. Compute runs on 100% renewable energy. |
+| **PublicAI** | (to be confirmed) | (to be confirmed) | Coming soon — publicly developed models. Details pending. |
+
+**Reading the gradations:**
+
+- **Privacy:** *architectural* (Tinfoil) beats *policy-based* (GreenPT). An
+  enclave protects you even if the provider is compromised; a policy protects
+  you only as far as the provider keeps its word. Both are better than a
+  provider with neither.
+- **Green energy:** *100% renewable* (GreenPT) beats *undisclosed* (Tinfoil).
+  GreenPT reports its energy mix; Tinfoil does not, so we can't claim greenness
+  for it — it may or may not be renewable.
+
+Trade-offs are real: the most private option (Tinfoil) isn't the greenest, and
+the greenest option (GreenPT) isn't the most private. The point of the co-op is
+that **you choose** which axis matters more for a given task.
+
 ## Current models
 
 Pricing is per 1 million tokens, input / output (what the co-op pays the
 provider — your own cost is your monthly allowance, not per-token billing).
 
-| Model | Provider | Value | Pricing (in / out) | Notes |
-|---|---|---|---|---|
-| `tinfoil/deepseek-v4-1-flash` | Tinfoil | **private** | $0.65 / $1.45 | Default; best for agentic tasks (1M context, tool calling). |
-| `tinfoil/gpt-oss-120b` | Tinfoil | **private** | $0.15 / $0.60 | Lightweight fallback. |
-| `tinfoil/glm-5-3-flash` | Tinfoil | **private** | $0.40 / $1.25 | Fast, efficient MoE model. |
-| `greenpt/green-r` | GreenPT | **green** | $0.35 / $0.95 | Reasoning, renewable energy. |
-| `greenpt/green-l` | GreenPT | **green** | $0.25 / $0.80 | Lightweight, renewable energy. |
-| `greenpt/glm-5.3-flash` | GreenPT | **green** | $0.11 / $0.44 | Fast GLM model, renewable energy. |
+| Model | Provider | Privacy | Green energy | Pricing (in / out) | Notes |
+|---|---|---|---|---|---|
+| `tinfoil/deepseek-v4-1-flash` | Tinfoil | architectural | undisclosed | $0.65 / $1.45 | Default; best for agentic tasks (1M context, tool calling). |
+| `tinfoil/gpt-oss-120b` | Tinfoil | architectural | undisclosed | $0.15 / $0.60 | Lightweight fallback. |
+| `tinfoil/glm-5-3-flash` | Tinfoil | architectural | undisclosed | $0.40 / $1.25 | Fast, efficient MoE model. |
+| `greenpt/green-r` | GreenPT | policy | 100% renewable | $0.35 / $0.95 | Reasoning, renewable energy. |
+| `greenpt/green-l` | GreenPT | policy | 100% renewable | $0.25 / $0.80 | Lightweight, renewable energy. |
+| `greenpt/glm-5.3-flash` | GreenPT | policy | 100% renewable | $0.11 / $0.44 | Fast GLM model, renewable energy. |
 
 Some models also have a discounted cached-input rate (when a prompt is reused
 and doesn't need to be re-read) — see the `code/litellm` config for the exact