Claude Haiku 4.5 with extended thinking enabled for deeper planning, more deliberate coding, and multi-step reasoning without moving up to Sonnet pricing.
Added Oct 15, 2025
Context Window
200.0K
Max Output
64.0K
Avg output tokens (7d)
581 tokens
Input Price (Auto)
$1.00/1M
Output Price (Auto)
$5.00/1M
Cache Read (Auto)
$0.10/1M
Capabilities
Benchmarks
Benchmarks
Performance metrics and benchmarks
Sourced from Artificial Analysis.
Intelligence Index
17.6
Coding Index
43.9
Agentic Index
10.3
Agentic work
AutomationBench-AA
Workflow automation with guardrail penalties
3.2%
Better than 28% of models compared
AA-Briefcase
Agentic knowledge work (Elo)
614 Elo
Better than 31% of models compared
GDPval-AA v2
Economically valuable tasks (Elo)
854 Elo
Better than 40% of models compared
Document reasoning
GDP.pdf
Professional PDF reasoning: all-pass rate
3.8%
Better than 25% of models compared
AA-LCR v1.1
Long context reasoning with updated grading
74.3%
Better than 76% of models compared
Reasoning
HLE
Humanity's Last Exam
10.4%
Better than 55% of models compared
IFBench
Instruction-following benchmark
54.3%
Better than 65% of models compared
Coding
Terminal-Bench v4.0
Practical coding and terminal tasks
0.0%
Better than 18% of models compared
SciCode
Python programming for scientific computing
42.2%
Better than 34% of models compared
LiveCodeBench
Contamination-free coding benchmark
61.5%
Better than 67% of models compared
Math
AIME 2025
American Invitational Mathematics Examination 2025
83.7%
Better than 80% of models compared
Knowledge
MMLU-Pro
Professional and academic subject knowledge
76.0%
Better than 52% of models compared
Legacy benchmarks
GPQA Diamond (legacy)
Graduate-level scientific reasoning
67.2%
Better than 44% of models compared
Terminal-Bench Hard (legacy)
Agentic coding and terminal use
27.3%
Better than 69% of models compared
T²-Bench Telecom (legacy)
Conversational AI agents in dual-control scenarios
54.7%
Better than 55% of models compared
AA-LCR (unversioned / legacy)
Long context reasoning evaluation
74.3%
Better than 76% of models compared
Last updated Sep 11, 2026
Artificial AnalysisProviders
Auto routing is available for this model. Explicit provider selection is not available.
Loading provider options…
Related text models
Compare Claude Haiku 4.5 Thinking with similar models from the same provider or model family.
Claude Haiku 4.5
anthropic/claude-haiku-4.5Claude Haiku 4.5 matches Sonnet 4's coding quality while running about twice as fast at roughly one-third the price, making it ideal for low-latency chat assistants, support bots, and pair programming. Pair it with Sonnet 4.5 to plan complex work and fan out execution across parallel Haiku workers.
Claude Haiku Latest
anthropic/claude-haiku-latestCompatibility alias that routes to the newest version of Claude Haiku. Currently routes to Claude Haiku 4.5 Thinking.
Claude Fable 5.1
anthropic/claude-fable-5.1Claude Fable 5.1 improves on Fable 5 across agentic coding, long-running workflows, front-end and visual code generation, finance, analysis, and knowledge work, with more concise plans and summaries. Anthropic retains prompts and outputs for 30 days; Zero Data Retention is not available.
Claude Opus 5
anthropic/claude-opus-5Claude Opus 5 is Anthropic's flagship model for advanced coding, long-running agentic tasks, research, and complex knowledge work.
Claude Sonnet 5
anthropic/claude-sonnet-5Anthropic's newest Sonnet model, built for stronger coding, agentic workflows, long-context reasoning, computer use, and practical knowledge work.
Claude Sonnet 5 Thinking
anthropic/claude-sonnet-5:thinkingClaude Sonnet 5 with adaptive thinking enabled for complex coding, planning, and agentic work.