49 lines
2.0 KiB
Markdown
49 lines
2.0 KiB
Markdown
# OpenCode Zen /v1/models listing
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## Metadata
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| Field | Value |
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| Institute | Molodetz Institute — Research & Retrieval Division |
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| Subject | free-model-discovery |
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| Document type | Source Dossier |
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| Tier | 1 |
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| Source title | OpenCode Zen /v1/models listing |
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| Source URL | https://opencode.ai/zen/v1/models |
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| Source publisher / author | OpenCode (opencode.ai) |
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| Source type | vendor docs |
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| Source date (published) | Unknown — not stated |
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| Date researched | 2026-10-12 |
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| Researched by | tai (agent), model: Claude Sonnet 5, on behalf of retoor |
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| Research method | direct page fetch |
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| Confidence | Medium |
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| Status | Active |
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## Summary
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Unauthenticated GET returns an OpenAI-style model list. Plain urllib is refused with HTTP 403; the request only succeeds with opencode client headers (User-Agent and x-opencode-*), as curl's default agent was accepted but Python's was not.
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## Key findings
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- 2026-10-12 listing held 80+ ids, of which these end in `-free`: ling-3.1-flash-free, mimo-v2.6-flash-free, muse-spark-1.2-contributor-free, muse-spark-1.3-contributor-free, nemotron-3.5-lightning-free, jev-1.13-free, step-5-preview-free, longcat-2.5-preview-free, space-bunny-free.
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- `big-pickle` is listed without a `-free` suffix; its price was not verified.
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- tai's static list still named nemotron-3-ultra-free, exo-free, ling-3.0-flash-fin-free and fledge-alpha-free, none of which the endpoint listed.
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## Pros / strengths
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Live, machine-readable, and the same endpoint tai calls at runtime, so what it reports is what a request will actually see.
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## Cons / limitations / caveats
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The listing carries no price field, so freeness is inferred from the `-free` suffix only. Anti-bot behaviour (403 for default Python agent) may change.
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## Relevance to tai
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Zen candidates used a hard-coded list that had drifted. Discovery now reads this endpoint (with opencode headers) and caches it.
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## Changelog
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| Date | Change |
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| 2026-10-12 | Initial dossier created. |
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