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Add Claude Haiku 5.5 and Gemini Nano Banana 2.1 to the model registry - #175
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Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01P5F3RE1C4HEEkC9QoN81d1
dixitaniket
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Oct 8, 2026
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🟡 Changes recommended
Haiku requests above 100k prompt tokens are deterministically under-billed by 5×.
1 open finding
What changed in this PR
Registers Claude Haiku 5.5 and Gemini Nano Banana 2.1 for gateway routing and billing.
Changes:
- Adds model configurations, pricing, capabilities, and aliases.
- Adds registry and Haiku billing tests.
- Updates supported-model documentation.
| File | Description |
|---|---|
tee_gateway/model_registry.py |
Registers both models and aliases. |
tests/test_pricing.py |
Tests resolution, pricing, and Haiku cost. |
README.md |
Lists the new supported models. |
CLAUDE.md |
Updates provider model documentation. |
🧠 Review effort: Balanced
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| input_price_usd=Decimal("0.0000001"), | ||
| output_price_usd=Decimal("0.0000005"), |
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Summary
Registers two models released this week (found by the scheduled new-model check):
claude-haiku-5-5, released 2026-10-07) — successor to Haiku 4.5.gemini-nano-banana-2.1, released 2026-10-06) — successor to Nano Banana 2 (gemini-3.1-flash-image). Note its API id has no-imagesuffix.Companion chat-api catalog PR: https://github.com/OpenGradient/chat-api/pull/401 (land this one first).
Pricing (per provider pages)
Needs a human decision: the registry has one rate per model, so Haiku 5.5 carries the ≤100k tier. Prompts over 100k tokens (up to the 1M window) would be under-billed 5x. Options: accept, or add length-tiered pricing before offering it widely.
Parameter restrictions
temperature/top_p/top_kwith a 400 ("Good to know" on https://platform.claude.com/docs/en/models/haiku-5-5/overview) →supports_temperature=False.Tests
uv run python -m pytest tests/test_pricing.py(163 passed),make lintclean.uv.lockuntouched.Supersedes (in the catalog): Haiku 4.5 and Nano Banana 2 are hidden there; both stay registered here so persisted chats keep working.
Also noted: GPT-6.1 Sol is already covered by open PR #173 / chat-api #364, so not duplicated here.
🤖 Generated with Claude Code
https://claude.ai/code/session_01P5F3RE1C4HEEkC9QoN81d1