fix(models): pin DeepInfra V4 Flash to 0731

[steebchen]

Problem

The deepseek-v4-flash root model is served by seven providers. All of them except DeepInfra roll their undated model alias forward to the current 0731 snapshot automatically. DeepInfra keeps the undated deepseek-ai/DeepSeek-V4-Flash id pinned to the launch deployment and exposes the new variant only under a dated id, so requests routed to DeepInfra were silently landing on the older snapshot.

Change

Point the DeepInfra provider mapping's externalId at deepseek-ai/DeepSeek-V4-Flash-0731. No other mapping needs touching — the remaining providers already resolve to the new variant through their existing ids, and Alibaba/ByteDance/Fireworks were already pinned to their own dated ids.

Pricing, context size, quantization and capability flags are unchanged; this is purely a deployment-id correction.

Verification

• pnpm format, full pnpm build, packages/models unit specs — all pass.
• Full e2e suite scoped to the changed mapping: TEST_MODELS="deepinfra/deepseek-v4-flash" FULL_MODE=true pnpm test:e2e → 29 files passed, 102 tests passed.
• Confirmed with a verbose run that the mapping actually executed live requests against DeepInfra under the new id rather than being filtered out — basic, streaming, tool calls, streaming tool calls, reasoning, and JSON output (streaming and non-streaming) all pass.

🤖 Generated with Claude Code

Summary by CodeRabbit

• Bug Fixes
  • Updated the DeepSeek V4 Flash provider configuration to use the current external model identifier, ensuring requests are routed correctly.

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ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Repository UI

Review profile: CHILL

Plan: Pro Plus

Run ID: c4b7c9a8-24a2-4890-bedc-9e30ec359ed6

📥 Commits

Reviewing files that changed from the base of the PR and between 797db4c and d44ff70.

📒 Files selected for processing (1)

• packages/models/src/models/deepseek.ts

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Walkthrough

The DeepInfra provider configuration now references deepseek-ai/DeepSeek-V4-Flash-0731 for DeepSeek V4 Flash.

Changes

DeepSeek model configuration

Layer / File(s)	Summary
Update DeepInfra deployment identifier packages/models/src/models/deepseek.ts	The DeepInfra provider now uses the dated deepseek-ai/DeepSeek-V4-Flash-0731 identifier.

Estimated code review effort: 1 (Trivial) | ~2 minutes

Possibly related PRs

• theopenco/llmgateway#3338: Introduces the DeepSeek V4 Flash model identifier updated by this PR.
• theopenco/llmgateway#3353: Pins DeepSeek V4 Flash provider identifiers to the dated 0731 snapshot.

Suggested reviewers: copilot, amineace

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly describes pinning the DeepInfra DeepSeek V4 Flash model to the 0731 deployment.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch fix/deepinfra-v4-flash-0731

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[Copilot]

🟢 Ready to approve

The change is a minimal, targeted external deployment-id correction consistent with existing provider mapping patterns and has no apparent downstream contract or pricing impacts.

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Pull request overview

This PR corrects the DeepInfra deployment identifier for the deepseek-v4-flash root model in packages/models, ensuring requests routed to DeepInfra hit the current 0731 snapshot rather than the older launch alias.

Changes:

• Updated the DeepInfra provider mapping externalId for deepseek-v4-flash to use the dated DeepInfra deployment (...-0731).

File summaries

File	Description
packages/models/src/models/deepseek.ts	Updates DeepInfra’s externalId for deepseek-v4-flash to target the 0731 snapshot deployment.

Review details

• Files reviewed: 1/1 changed files
• Comments generated: 0
• Review effort level: Lite

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