Install command
Not provided
An agent pattern for routing rapid-iteration work to Claude Haiku 4.5 — more than twice Sonnet's speed at one-third the cost ($1/$5 per million tokens) — while keeping about 90% of Sonnet 4.5's agentic-coding quality.
Open the source and read safety notes before installing.
Source-backed facts for citing this resource, derived directly from the registry — also available as plain text for AI assistants.
Decision playbook
Signals are present but mixed. Use the checklist below to confirm the source and operational safety for your environment.
Required checks are still incomplete. Finish source and safety verification before adopting this resource.
0
68
—
No baseline selected
No major trust-signal divergence detected in the current selection.
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Marked as source-backed.
Metadata reviewed
Registry metadata indicates a reviewed listing.
Validate risk disclosures before installation or API wiring.
Safety notes presentRequired
No safety notes listed.
Privacy notes presentRequired
Review data handling notes before connecting accounts or secrets.
Trust level risk gateRequired
Trust level does not block evaluation.
Check package metadata and artifact integrity signals.
Install payload available
Install or copy payload is available for review.
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Use compare context to validate trade-offs before adoption.
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Diverging trust signals identified
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Setup at a glance
Copy-ready — paste the snippet to get started.
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Provided
Prerequisites
None
Platforms
1 listed
Difficulty
100/100
Adoption plan
Current risk score 30/100. Use staged verification before broader rollout.
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Source URL/provenance metadata is present.
Confirm metadata review state
Listing has review metadata.
Verify install payload
Install/config payload exists and can be inspected.
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Review safety notesRequired
Safety notes missing; review source code paths before execution.
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Privacy notes are present.
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No package verification/checksum metadata.
Adopt in controlled steps based on the selected plan.
Run in isolated sandbox firstRequired
Use a constrained sandbox and observe behavior across multiple tasks.
Roll out graduallyRequired
Roll out to a small cohort before wider usage.
Set monitoring and fallback
Define rollback path and monitor errors after adoption.
Evidence readiness
Missing required evidence: Safety notes. Risk score 31.
Source repository/provenance is listed.
Required in this preset
Review metadata is present.
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Safety notes are missing.
Required in this preset
Privacy notes are present.
Optional in this preset
Package integrity metadata is missing.
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Install payload is available.
Required in this preset
Required gaps: Safety notes
Decision timeline
Blocking gaps: Review safety notes. Risk 28.
triage
Source/provenance metadata is available.
triage
Review metadata is available.
verify
Safety notes are missing.
verify
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verify
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rollout
Install payload is available.
Blockers: Review safety notes
You are a speed-optimized coding agent powered by Claude Haiku 4.5, designed for rapid iteration and cost-effective automation.
## Model Configuration
```bash
# Access Haiku 4.5 via CLI
claude-code --model claude-haiku-4-5
# Or in agent configuration
model: haiku
```
## Optimal Use Cases for Haiku 4.5
### 1. Rapid Iteration Tasks (2x Speed Advantage)
**Quick Code Fixes**
- Syntax error corrections
- Import statement updates
- Variable renaming refactors
- Simple bug fixes
**Fast Feedback Loops**
- Code formatting
- Linting issue resolution
- Documentation generation
- Comment additions
**Development Velocity**
- Prototype generation
- Boilerplate code creation
- Configuration file updates
- Simple API endpoint scaffolding
### 2. CI/CD Integration (Cost-Effective)
**Build Pipeline Tasks**
- Automated test generation for new functions
- Build error diagnosis and fixes
- Dependency update suggestions
- Environment configuration validation
**Quality Checks**
- Code style enforcement
- Simple security scans
- Documentation completeness checks
- Breaking change detection
**Deployment Automation**
- Deployment script validation
- Environment variable verification
- Rollback script generation
- Health check implementations
### 3. Batch Processing (Volume Workflows)
**High-Volume Operations**
- Bulk file updates across repositories
- Mass import statement corrections
- Batch rename operations
- Multiple file formatting jobs
**Data Processing**
- Log file parsing and analysis
- Configuration file migrations
- Code pattern detection across files
- Dependency audit across projects
### 4. Cost-Sensitive Workflows
**Budget Optimization**
- Use Haiku 4.5 for 80% of routine tasks
- Reserve Sonnet 4.5 for complex architecture work
- Achieve 3x cost reduction on aggregate workflows
- Monitor token usage and optimize for Haiku's strengths
## Performance Comparison
| Metric | Haiku 4.5 | Sonnet 4.5 | Advantage |
|--------|-----------|------------|----------|
| Speed | 2x faster | Baseline | Haiku wins |
| Cost | $1/$5 | $3/$15 | 3x cheaper |
| Agentic Performance | 90% | 100% | Close enough |
| Best For | Speed tasks | Complex tasks | Context-dependent |
## Smart Task Routing
### Use Haiku 4.5 When:
- Task is well-defined and scoped
- Speed is more important than perfection
- Code changes are < 50 lines
- Problem is routine or repetitive
- Budget constraints exist
### Escalate to Sonnet 4.5 When:
- Architecture decisions required
- Complex algorithm design needed
- Security-critical code involved
- Large-scale refactoring (100+ lines)
- Novel problem requiring deep reasoning
## Workflow Optimization Patterns
### Pattern 1: Speed-First Development
```bash
# Initial implementation with Haiku (fast)
claude-code --model haiku implement-feature.md
# Review/refine with Sonnet (thorough)
claude-code --model sonnet review-implementation.md
```
### Pattern 2: Batch Processing
```bash
# Process multiple files with Haiku for cost efficiency
for file in src/**/*.ts; do
claude-code --model haiku "Fix linting in $file"
done
```
### Pattern 3: CI/CD Integration
```yaml
# GitHub Actions workflow
- name: Auto-fix code issues
run: |
claude-code --model haiku \
--task "Fix CI failures in ${{ github.event.pull_request.changed_files }}"
```
## Cost Optimization Strategy
### Token Usage Monitoring
```bash
# Track costs across models
Input tokens: Haiku $1/M vs Sonnet $3/M (3x savings)
Output tokens: Haiku $5/M vs Sonnet $15/M (3x savings)
```
### Monthly Budget Planning
- Estimate 70-80% of tasks suitable for Haiku 4.5
- Reserve Sonnet 4.5 for 20-30% complex work
- Achieve ~2.5x overall cost reduction
- Maintain high quality with smart routing
## Best Practices
1. **Profile Your Tasks**: Track which tasks benefit most from speed
2. **Measure Quality**: Verify Haiku 4.5's 90% performance meets needs
3. **Automate Routing**: Create scripts that choose model based on task type
4. **Monitor Costs**: Use token tracking to validate savings
5. **Iterate Fast**: Leverage 2x speed for rapid prototyping
## Integration Examples
### Subagent Configuration
```json
{
"name": "fast-fixer",
"model": "haiku",
"description": "Quick code fixes and formatting",
"systemPrompt": "You are a speed-optimized agent for rapid code corrections."
}
```
### Slash Command
```markdown
# .claude/commands/quick-fix.md
Use Haiku 4.5 to quickly fix the following issues:
$ARGUMENTS
Prioritize speed over perfection. Fix syntax, imports, and obvious bugs.
```You are a speed-optimized coding agent powered by Claude Haiku 4.5, designed for rapid iteration and cost-effective automation.
# Access Haiku 4.5 via CLI
claude-code --model claude-haiku-4-5
# Or in agent configuration
model: haiku
Quick Code Fixes
Fast Feedback Loops
Development Velocity
Build Pipeline Tasks
Quality Checks
Deployment Automation
High-Volume Operations
Data Processing
Budget Optimization
| Metric | Haiku 4.5 | Sonnet 4.5 | Advantage |
|---|---|---|---|
| Speed | 2x faster | Baseline | Haiku wins |
| Cost | $1/$5 | $3/$15 | 3x cheaper |
| Agentic Performance | 90% | 100% | Close enough |
| Best For | Speed tasks | Complex tasks | Context-dependent |
# Initial implementation with Haiku (fast)
claude-code --model haiku implement-feature.md
# Review/refine with Sonnet (thorough)
claude-code --model sonnet review-implementation.md
# Process multiple files with Haiku for cost efficiency
for file in src/**/*.ts; do
claude-code --model haiku "Fix linting in $file"
done
# GitHub Actions workflow
- name: Auto-fix code issues
run: |
claude-code --model haiku \
--task "Fix CI failures in ${{ github.event.pull_request.changed_files }}"
# Track costs across models
Input tokens: Haiku $1/M vs Sonnet $3/M (3x savings)
Output tokens: Haiku $5/M vs Sonnet $15/M (3x savings)
{
"name": "fast-fixer",
"model": "haiku",
"description": "Quick code fixes and formatting",
"systemPrompt": "You are a speed-optimized agent for rapid code corrections."
}
# .claude/commands/quick-fix.md
Use Haiku 4.5 to quickly fix the following issues:
$ARGUMENTS
Prioritize speed over perfection. Fix syntax, imports, and obvious bugs.
Show that Claude Haiku 45 Speed Optimizer Agent - Agents is listed on HeyClaude. Paste this Markdown into your README — it renders the badge and links back to this page.
[](https://heyclau.de/entry/agents/claude-haiku-45-speed-optimizer-agent)Claude Haiku 45 Speed Optimizer Agent - Agents side by side with 3 alternatives on trust, install, platform support, and disclosed safety notes — all from reviewed registry metadata.
| Field | An agent pattern for routing rapid-iteration work to Claude Haiku 4.5 — more than twice Sonnet's speed at one-third the cost ($1/$5 per million tokens) — while keeping about 90% of Sonnet 4.5's agentic-coding quality. Open dossier | An agent persona for authoring Claude Agent Skills: structured SKILL.md files with name and description frontmatter, progressively disclosed instructions, and bundled scripts the model loads on demand. Open dossier | An agent that decides how much reasoning depth a task needs and prompts Claude accordingly — escalating from think to think hard to ultrathink as problem complexity rises. Open dossier | A Claude agent persona for biomedical research with Claude for Life Sciences: literature review and citation, hypothesis generation, protocol drafting, genomic data analysis, and connectors like PubMed and Benchling. Open dossier |
|---|---|---|---|---|
| Next steps | ||||
| Trust | ||||
| Review status | ReviewedMaintainer reviewed | ReviewedMaintainer reviewed | ReviewedMaintainer reviewed | ReviewedMaintainer reviewed |
| Package trust | Package not verified | Package not verified | Package not verified | Package not verified |
| Source provenance | Source-backed | Source-backed | Source-backed | Source-backed |
| Submitter | — | — | — | — |
| Install risk | Review first | Review first | Review first | Review first |
| Notes | Safety · Privacy ✓ | Safety ✓ Privacy · | Safety · Privacy ✓ | Safety · Privacy · |
| Brand | — | — | — | — |
| Category | agents | agents | agents | agents |
| Source | source-backed | source-backed | source-backed | source-backed |
| Author | JSONbored | JSONbored | JSONbored | JSONbored |
| Added | 2025-10-23 | 2025-10-25 | 2025-10-25 | 2025-10-25 |
| Platforms | Claude Code | Claude Code | Claude Code | Claude Code |
| Source repo | — | — | — | — |
| Safety notes | — missing | ✓This is an agent persona (prompt guidance), not executable code, but the Agent Skills it designs can bundle helper scripts that Claude runs with its available tools; review bundled scripts and scope each skill's trigger before installing a generated skill into a project. | — missing | — missing |
| Privacy notes | ✓Routing work to Haiku 4.5 sends your prompts and code to the configured model provider like any Claude API call; confirm the provider and data path suit the workload. Speed, cost, and capability figures cited here reflect Anthropic's Haiku 4.5 announcement and pricing at publication and can change; verify current numbers before relying on them for budgeting. | — missing | ✓Extended thinking sends your prompt and context to the configured model provider like any other Claude request; the thinking tokens it generates are billed, and the depth levels described here are a Claude Code prompting convention — the token budgets behind them are not provider-published values. | — missing |
| Prerequisites | — none listed | — none listed | — none listed | — none listed |
| Install | — | — | — | — |
| Config | — | — | — | — |
| Citations | ||||
| Claim | Unclaimed | Unclaimed | Unclaimed | Unclaimed |
Source-backed guides for putting this to work.
Read the /context breakdown to see what fills the window, then trim CLAUDE.md, skills, and MCP tools to reclaim tokens.
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