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📝 WalkthroughWalkthroughThe model registry adds peak/off-peak pricing schedules, validates schedule data, applies time-based multipliers to cost calculations, and expands the model catalog with new rates, promotional pricing, aliases, and source metadata. ChangesPricing and model catalog
Priority: ➖ Normal Estimated code review effort: 4 (Complex) | ~60 minutes Change: Feature Sequence Diagram(s)sequenceDiagram
participant CostCalculator
participant PricingResolver
participant ScheduleMatcher
CostCalculator->>PricingResolver: request pricing for date and service tier
PricingResolver->>ScheduleMatcher: evaluate timezone and usage instant
ScheduleMatcher-->>PricingResolver: return peak or off-peak multiplier
PricingResolver-->>CostCalculator: return ResolvedPricing
CostCalculator->>CostCalculator: apply multiplier to token costs
Suggested reviewers: Merge Risk: 🟡 Moderate · up to Batch usage of gemini-3.8-flash will be overstated at Standard rates until its published Batch pricing is added. This should be corrected before merge. 🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
✨ Finishing Touches🧪 Generate unit tests (beta)
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Inline comments:
In `@src/models.rs`:
- Around line 2006-2020: The model registration for gemini-3.8-flash needs Batch
pricing entries for both the promotional period and the post-2026-12-31 rates so
pricing_for_service_tier does not fall back to Standard. Add only the published
Batch cards, preserving the existing model and caching configuration, and do not
add Flex or Priority rates.
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…or every price
Model rates now vary by time of day and by date, and every price is traceable to
the vendor's own pricing page.
Peak/off-peak pricing
- Model a schedule as a multiplier over a model's base (peak) rates rather than
a second rate card, so input, output, cache creation and cache reads all scale
by the same factor and the existing tiered, bracketed and caching logic is
reused unchanged.
- `PeakWindow` / `TimeOfDayPricing`, plus an optional `time_of_day_pricing`
field on `ModelInfo` and on `DatedPricing`.
- Pricing, caching and the multiplier resolve together through
`ResolvedPricing`, so service-tier overrides inherit the schedule that applies
to the request.
- Usage with no timestamp is billed at peak, keeping the feature opt-in and
never silently discounting untimed usage.
- An unknown IANA timezone falls back to UTC with a one-time warning; an invalid
multiplier or a zero-length window causes the schedule to be skipped.
- DeepSeek's published schedule: peak 01:00-04:00 and 06:00-10:00 UTC, Monday to
Friday; half rate at every other hour, including the whole weekend.
Multiple periods per model
- `add_dated_pricing!` appends a period ending at an exclusive `valid_until`; the
model's own `pricing` is the final period, covering every date after the last
one. Any number of periods may be declared, in any order, so a model's rates
are no longer pinned to a single point in time.
- `add_time_of_day_pricing!` now takes an optional date, so each period can run
its own peak/off-peak rule; a period without one falls back to the model-level
schedule.
- Two periods ending on the same date are rejected instead of being resolved by
vector order: built-in registrations panic, and `init_external_models` refuses
the model with a specific reason. A period-scoped override naming a date with
no period is likewise an error rather than a silent no-op.
Registry backfill and sources
- Add GLM-5.3 / 5.3-Flash / 5.2, Kimi K3 and K2.7 Code, Qwen3.8-Max and
Qwen3.7-Max, Gemini 3.8 Flash and Step-3.7-Flash, plus provider-prefixed
aliases.
- Replace third-party citations (OpenRouter, qwencloud, anotherwrapper) with the
vendors' own pages.
- Cite a source for every price, using one `// Source:` line per vendor section.
That line is the vendor's canonical price list and covers all of the section's
rates, including dated periods and service tiers, which are published on the
same page. The convention is documented on `populate_defaults`.
- Give an entry its own `// Source:` line only when its price comes from a
different page: retired models that keep a per-model page, or models served by
another provider (OpenAI weights on Amazon Bedrock). 27 entries carry one.
- Label the 22 retired, cloaked or subscription-only models that no vendor
publishes a price for as `unavailable (<reason>)`.
- Correct prices that had drifted from the published rates:
- gpt-5.5: long-context cached input is 1.00, not 1.25
- gpt-4o-2024-05-13: output is 15.00, not 10.00
- step-3.5-flash: add the missing cache-hit rate
- solar-pro-3: add the missing cached-input rate
- doubao-seed-2.0-code: use Volcano Ark's input-length brackets rather than a
single flat rate
Verified: 472 tests pass, clippy clean under `-D warnings`, docs build, fmt
clean.
Signed-off-by: jimyag <git@jimyag.com>
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What
Model rates now vary by time of day and by date, and every price is traceable to the vendor's own pricing page.
Why
DeepSeek and several other vendors publish peak and off-peak rates for the same model. Splitrail had no way to express that: every request was priced at the peak (standard) rate regardless of when it happened, overstating off-peak cost.
Two related gaps came out of the same work:
Peak/off-peak pricing
Time-of-day pricing is modelled as a multiplier over a model's base (peak) rates rather than a second full rate card. Every cost category — input, output, cache creation and cache reads — scales by the same factor, so the existing tiered, bracketed and caching logic is reused unchanged.
PeakWindow/TimeOfDayPricing, plus an optionaltime_of_day_pricingfield on bothModelInfoandDatedPricing.ResolvedPricing, so service-tier overrides inherit the schedule that applies to the request.Verified on real data
deepseek-v4-flashusage on 2026-07-12 (a Sunday) reports$0.053806452— exactly half the peak-rate total of$0.107612904.Multiple periods per model
A model's rates are no longer pinned to a single point in time.
add_dated_pricing!appends a period ending at an exclusivevalid_until; the model's ownpricingis the final period, covering every date after the last one. Any number of periods may be declared, in any order.add_time_of_day_pricing!now takes an optional date, so each period can run its own peak/off-peak rule. A period without one falls back to the model-level schedule.valid_untilstill in force, so it does not depend on vector order.Duplicate periods are an error, not a coin flip
Two periods ending on the same date used to resolve by vector order, silently. Now:
init_external_modelsrefuses the model and logs the specific reason;valid_untilis an exclusive upper bound, so the boundary date belongs to the newer period —≤2026-06-01and2026-06-01 ≤are adjacent, not overlapping.Registry backfill and sources
Added GLM-5.3 / 5.3-Flash / 5.2, Kimi K3 and K2.7 Code, Qwen3.8-Max and Qwen3.7-Max, Gemini 3.8 Flash and Step-3.7-Flash, plus provider-prefixed aliases.
Replaced third-party citations (OpenRouter, qwencloud, anotherwrapper) with the vendors' own pages.
Corrected prices that had drifted:
gpt-5.5long-context cached inputgpt-4o-2024-05-13outputstep-3.5-flashcache hitsolar-pro-3cached inputdoubao-seed-2.0-codeHow every price is cited
Repeating one vendor URL above all 127 models is noise, so the file keeps its existing convention: one
// Source:line per vendor section, directly under the section header. That line is the vendor's canonical price list and covers every rate in the section — including dated periods and service tiers, which are published on the same page. The convention is documented onpopulate_defaultsso it does not have to be re-derived.An entry gets its own
// Source:line only when its price comes from a different page. 27 do:o1-preview,o1-mini,codex-mini-latest,gpt-5.1-codex,gpt-5.1-codex-mini,gpt-5.1-codex-max,gpt-5.2-codex;gpt-oss-safeguard-120b(Amazon Bedrock);auto), which are not on a model page.22 models are retired, cloaked or subscription-only, and no vendor publishes a price for them. They are labelled
unavailable (<reason>)rather than citing a third party or leaving the figure unattributed:gpt-4.5,gpt-5-codex-mini,claude-3-7-sonnet,claude-3-5-sonnet,claude-3-opus,claude-3-haiku,gemini-3-pro-preview-11-2025,gemini-2.0-pro-exp-02-05,gemini-2.0-flash,gemini-2.0-flash-lite,gemini-1.5-flash,gemini-1.5-flash-8b,gemini-1.5-pro,deepseek.v3.2,mimo-v2-omni,kimi-k2.5,qwen3.5-35b-a3b,qwen3.7-flash,longcat-flash-lite,aurora-alpha,hf:zai-org/GLM-4.6,hf:MiniMaxAI/MiniMax-M2Worth deciding separately whether these should stay in the registry at all.
Currency caveat
StepFun and Volcano Ark publish CNY only. Those entries use the file's existing 7 CNY-per-USD conversion, documented in the source comments.
Verification