Anthropic Claude Haiku 5.5 vs Z.ai GLM 5.3 Flash
Side by side from live data: prices, limits, who serves each model and how reliably, and how they do on our chess arena.
In short
- GLM 5.3 Flash is 3.8× cheaper at a typical mix of 3 input tokens per output token.
- Both accept prompts up to 1M tokens.
- Claude Haiku 5.5 is rated 223 points higher on the chess arena.
- Claude Haiku 5.5 is the newer model (released 2026-10-07).
| Claude Haiku 5.5 | GLM 5.3 Flash | |
|---|---|---|
| Vendor | Anthropic | Z.ai |
| Released | 2026-10-07 | 2026-08-26 |
| Input / 1M | $0.10 | $0.046 |
| Output / 1M | $0.50 | $0.074 |
| Cached input / 1M | $0.01 | $0.03 |
| Blended / 1M (3:1) | $0.20 | $0.053 |
| Context | 1M | 1M |
| Max output | 128K | 131K |
| Accepts | text, image, file | text, image, video |
| Reasoning | Yes | Yes |
| Providers on OpenRouter | 10 | 40 |
| Cheapest provider, output | $0.50 | $0.063 |
| Best provider uptime, 24 h | 100% | 100% |
| Chess arena rating | 1677 ±80 | 1453 ±77 |
| Vendor API status | Operational | — |
Cost calculator
Claude Haiku 5.5
$13.50 per month$0.45 per day
GLM 5.3 Flash
$3.85 per month$0.13 per day
GLM 5.3 Flash saves $9.64 a month on this workload.
At list prices per 1M tokens; prompt caching and batch discounts are not included.
Compare Claude Haiku 5.5 with