Claude Haiku 4.5 vs GLM 5.1
How do these models stack up? Below is an expert side-by-side comparison of specifications, context window capacity, live pricing per million tokens, and standardized benchmark scores for Claude Haiku 4.5 and GLM 5.1.
Claude Haiku 4.5
Claude Haiku 4.5 is Anthropic’s fastest and most efficient model, delivering near-frontier intelligence at a fraction of the cost and latency of larger Claude models. Matching Claude Sonnet 4’s performance...
GLM 5.1
GLM-5.1 delivers a major leap in coding capability, with particularly significant gains in handling long-horizon tasks. Unlike previous models built around minute-level interactions, GLM-5.1 can work independently and continuously on...
Technical Specifications
| Specification | Claude Haiku 4.5 | GLM 5.1 |
|---|---|---|
| Provider | Anthropic | Zhipu AI |
| Context Window | 200,000 tokens | 202,752 tokens |
| Agent Suitability | 87/100 | N/A |
| Time to First Token (TTFT) | 180 ms | N/A |
| Deployment Model | managed api | managed api |
| Production Stability | stable | stable |
| API Available | Yes | Yes |
| Released Date | 2025-10-15 | 2026-04-07 |
API Pricing Comparison
Input Price per Million Tokens
Claude Haiku 4.5
$1.00
GLM 5.1
$0.97
Output Price per Million Tokens
Claude Haiku 4.5
$5.00
GLM 5.1
$3.04
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Benchmark Performance Metrics
Scores show the raw performance percentages verified across key evaluation suites. Higher bars indicate superior accuracy and capability in that domain.
Claude Haiku 4.5 Quirks & Gotchas
- ▸Fastest TTFT in the Claude lineup — ideal for real-time chat
- ▸Tool calling limited compared to Sonnet — best for simple classification and routing
GLM 5.1 Quirks & Gotchas
No developer gotchas reported.