Claude Haiku 4.5
v20251001Anthropic
Anthropic's fastest model, released October 2025 and still the speed tier of the current lineup (Active as of 2026-07). At launch it beat the since-retired Sonnet 4 on coding (73.3% vs 72.7% SWE-bench) at 1/3 the cost and 2x the speed. First Haiku with extended thinking.
Trust Vector Analysis
Dimension Breakdown
🚀Performance & Reliability+
Best coding model for the price. 73.3% SWE-bench beats Sonnet 4. 4-5x faster than Sonnet 4.5. Flagship performance at budget pricing.
Industry-standard coding benchmarks
Reasoning benchmarks
Comprehensive knowledge testing
Internal testing
Median latency
95th percentile
Official specification
Historical uptime data
🛡️Security+
Strong security with ASL-2 standard. Constitutional AI guardrails. Less restrictive than ASL-3 models.
OWASP LLM01 testing
Adversarial testing
Privacy policy analysis
Safety testing
🔒Privacy & Compliance+
Excellent privacy with ephemeral data. HIPAA eligible at budget pricing. Strong compliance.
Enterprise docs review
Policy analysis
Data protection review
Certification verification
Data handling review
👁️Trust & Transparency+
Good transparency with extended thinking (first for Haiku). Strong guardrails. Latest training cutoff (Feb 2025).
Reasoning transparency evaluation
QA testing
Bias benchmarks
Qualitative assessment
Documentation review
Public disclosure review
Safety mechanism analysis
⚙️Operational Excellence+
Excellent for high-volume production. Budget pricing enables multi-agent architectures. Fast deployment.
API design review
Policy review
Monitoring tools review
Support assessment
Ecosystem analysis
- +Best coding performance for price: 73.3% SWE-bench beats Sonnet 4
- +4-5x faster than Sonnet 4.5 (~0.4s p50 latency)
- +Budget pricing: $1/$5 per 1M tokens (1/3 cost of Sonnet 4)
- +First Haiku with extended thinking, computer use, context awareness
- +HIPAA eligible with ephemeral data handling
- +200K context, 64K output
- +Still Active in the current lineup as of 2026-07 (tentative retirement not sooner than 2026-10-15)
- !ASL-2 security (less restrictive than ASL-3 Opus/Sonnet models)
- !Lower reasoning ceiling than Sonnet/Opus tiers for complex tasks
- !Reliable knowledge cutoff February 2025 — oldest in the current Claude lineup
- !200K context vs 1M on Sonnet 4.6/Sonnet 5 and current Opus models
- !No adaptive thinking or effort parameter (extended thinking only)
Use Case Ratings
code generation
Best coding model for the price at launch: 73.3% SWE-bench beat the since-retired Sonnet 4. Perfect for high-volume coding.
customer support
Exceptional for customer support. Flagship performance at $1/$5. 0.4s latency perfect for chat.
content creation
Strong content creation at budget pricing. Fast generation (4-5x faster than Sonnet 4.5).
data analysis
Good analytical capabilities with extended thinking. Great value for cost.
research assistant
Excellent for research. 200K context, extended thinking, fast, budget pricing.
legal compliance
HIPAA eligible with strong privacy at budget pricing. Good for legal document processing.
healthcare
HIPAA eligible. Budget pricing enables high-volume clinical documentation.
financial analysis
Good for standard financial analysis. Extended thinking helps with modeling.
education
Exceptional for education. Fast, affordable, strong explanations. Perfect for high-volume use.
creative writing
Strong creative writing. Fast generation good for drafting. Budget pricing for iteration.