THE TICKER · HEAD-TO-HEAD · CHECKED DAILY · LAST CHANGE 2026-10-13
CLAUDE OPUS 4.8 VS GLM 5.3 FLASH
Anthropic vs Z.ai, in USD per million tokens, cross-checked daily against the public pricing dataset. Same jobs, both meters running.
Claude Opus 4.8 costs 48.5x more than GLM 5.3 Flash for the same job — a 1,000-token prompt with a 3,000-token reply runs $0.08 vs $0.0016. At 1,000 runs a day, that gap is $2,350.50 a month for identical traffic.
SIDE BY SIDE
| Claude Opus 4.8 → | GLM 5.3 Flash → | |
|---|---|---|
| Vendor | Anthropic | Z.ai |
| Input / MTok | $5.00 | $0.150 |
| Output / MTok | $25.00 | $0.500 |
| Output multiple | 5.0x | 3.3x |
| 1K prompt + 3K reply | $0.08 | $0.0016 |
SAME JOB, BOTH BILLS
| Scenario | Claude Opus 4.8 | GLM 5.3 Flash | Gap |
|---|---|---|---|
| A typical prompt | $0.02 | $0.0005 | 48.5x |
| A 20-turn conversation | $0.12 | $0.0026 | 46.2x |
| Summarizing a 10-page document | $0.12 | $0.0028 | 42.9x |
| One agent run | $0.31 | $0.0063 | 49.2x |
| A code review request | $0.10 | $0.0021 | 48.2x |
Output sizes use the same editorial ratios as the Burn Calculator. Estimates, not invoices — and price is not a benchmark: the cheaper model is only a bargain if it does the job.
SETTLE IT WITH YOUR OWN PROMPT
Paste a real prompt into the Burn Calculator and see what it costs on Claude Opus 4.8, GLM 5.3 Flash and the other 34 models on the board — plus how much of it is waste either way.