fix(pricing): add unversioned vertex_ai/claude-haiku-4-5 entry

[Isydmr]

Relevant issues

N/A

Pre-Submission checklist

• I have Added testing in the tests/ directory, Adding at least 1 test is a hard requirement - see details
• My PR passes all unit tests on make test-unit
• My PR's scope is as isolated as possible, it only solves 1 specific problem
• I have requested a Greptile review by commenting @greptileai and received a Confidence Score of at least 4/5 before requesting a maintainer review

Type

🐛 Bug Fix

Changes

Add unversioned vertex_ai/claude-haiku-4-5 pricing entry to both model_prices_and_context_window.json and litellm/model_prices_and_context_window_backup.json.

Currently only vertex_ai/claude-haiku-4-5@20251001 exists, which causes cost tracking to return $0.00 when using vertex_ai/claude-haiku-4-5 as the model name. All other Vertex AI Claude models have both versioned and unversioned entries (e.g. vertex_ai/claude-opus-4-5, vertex_ai/claude-sonnet-4-5).

[vercel]

The latest updates on your projects. Learn more about Vercel for GitHub.

Project	Deployment	Actions	Updated (UTC)
litellm	Ready	Preview, Comment	Mar 30, 2026 1:30pm

[codspeed-hq]

Merging this PR will not alter performance

✅ 16 untouched benchmarks

---

_{Comparing Isydmr:fix/vertex-ai-haiku-4-5-pricing (da5b338) with main (5812053)}

[greptile-apps]

Greptile Summary

This PR adds a missing unversioned vertex_ai/claude-haiku-4-5 pricing entry to both model_prices_and_context_window.json and its backup, fixing $0.00 cost tracking when callers pass the model name without a version suffix.

• The new entry is an exact copy of the existing vertex_ai/claude-haiku-4-5@20251001 entry (pricing, context window, and all capability flags match).
• Both JSON files are updated identically, keeping them in sync.
• No tests were added; the pre-submission checklist item for tests is unchecked. While the change is purely additive data, the project's stated requirement is at least one accompanying test.
• The PR description provides a clear summary of the problem and the fix, satisfying the traceability requirement from the contributing guidelines.

Confidence Score: 5/5

Safe to merge — purely additive JSON data change with no logic modifications.

The change is a minimal, isolated data fix that mirrors an already-existing versioned entry. All pricing values and capability flags are internally consistent. Both JSON files are updated in sync. No logic, authentication, or critical-path code is touched. The missing test is the only process concern, but for a pure JSON pricing entry it does not introduce any runtime risk.

No files require special attention.

Important Files Changed

Filename	Overview
model_prices_and_context_window.json	Adds unversioned vertex_ai/claude-haiku-4-5 entry with values that exactly mirror the versioned @20251001 entry — pricing, context window, and capability flags are all consistent.
litellm/model_prices_and_context_window_backup.json	Identical change applied to the backup JSON; both files are kept in sync as expected.

Flowchart

%%{init: {'theme': 'neutral'}}%%
flowchart TD
    A["Caller uses\nvertex_ai/claude-haiku-4-5"] --> B{Lookup in\nmodel_prices JSON}
    B -- "Before this PR\n(entry missing)" --> C["No match → cost = $0.00"]
    B -- "After this PR\n(entry added)" --> D["Match found\nvertex_ai/claude-haiku-4-5"]
    D --> E["Correct pricing returned\ninput: $1/M · output: $5/M"]

Loading

_{Reviews (2): Last reviewed commit: "Merge branch 'main' of github.com:BerriA..." | Re-trigger Greptile}