MohamedAbdallah-14/prompt-to-asset

Documentation accuracy pass for Google image-generation

Verified Google's current pricing and free-tier policy for image generation models against the official pricing page and consumer-app plan docs, then propagated the verified numbers across the repo. No runtime, routing, or API changes — this is drift correction only.

Fixed

• Nano Banana Pro cost was roughly half of reality. data/model-registry.json and packages/mcp-server/src/cost-guard.ts had gemini-3-pro-image priced at $0.067 / $0.101 / $0.151 (the Nano Banana 2 Flash tiers). The verified Nano Banana Pro price is $0.134 at 1K/2K and $0.24 at 4K, plus input-image cost. Fixed.
• Nano Banana 2 Flash disambiguated. gemini-3-flash-image now carries separate cost hints for the current gemini-3.1-flash-image-preview ($0.045 / $0.101 / $0.151 for 1K / 2K / 4K) and the legacy gemini-2.5-flash-image ($0.039/img).
• Imagen 4 tiers itemised. Fast $0.02, Standard $0.04, Ultra $0.06. The imagen-4 successor field now points to gemini-3-flash-image (which exists in the registry) rather than the removed gemini-2.5-flash-image.
• Free-tier claims aligned with reality across README.md, GETTING_STARTED.md, CLAUDE.md, AGENTS.md, GEMINI.md, the .github/copilot-instructions.md, .clinerules, .windsurf, .cursor, and rules/ mirrors, data/paste-targets.json, bundle/mcpb/manifest.json, .env.example, the logo-generation research notes, and the capabilities, doctor, and google provider modules. The verified position:
  • No API free tier for Gemini/Imagen image generation. An unbilled key returns HTTP 429 with limit:0 on image endpoints.
  • Free interactive paths: AI Studio web UI (500–1000 images/day dynamic) and the Gemini consumer app (Basic 20/day, AI Plus 50/day, AI Pro 100/day, Ultra 1000/day) — paste-only, then call asset_ingest_external.
• Stale research claim removed: "Google restored a free API tier for Nano Banana" is no longer true and has been removed from the logo-generation research notes.

Changed

• data/model-registry.json → 1.2.2 / 2026-04-22.
• scripts/add-cost-hints.mjs updated so regenerated cost hints match the verified pricing.

Verify suite (all green)

format:check, typecheck, lint, 241 tests, 21/21 smoke, evals 9/9, p2a doctor --data.

See CHANGELOG.md for the full entry.