Cheaper alternatives to Claude Opus 4.8
Claude Opus 4.8 scores 1453 on the overall Arena and costs about $2,000.00/month at 100,000 calls (1,500 in / 500 out). Here are models that match or beat it on quality for less.
| GLM-5.2 | 1463 | $430.00 | $1,570.00/mo | Z.ai (Zhipu AI) |
| Gemini 2.5 Pro | 1463 | $687.50 | $1,312.50/mo | |
| GPT-5.4 | 1461 | $1,125.00 | $875.00/mo | OpenAI |
| Kimi K3 | 1473 | $1,200.00 | $800.00/mo | Moonshot AI |
| GPT-5.4 | 1461 | $1,237.50 | $762.50/mo | AWS Bedrock |
Intelligence scores are community Arena ratings from LMArena / arena.ai, used under CC BY 4.0. Snapshot last refreshed 28 July 2026. Scores are a relative signal, not an absolute measure of capability. A Measured score was voted on directly; an Estimated score is inherited from an identical base model (a regional/creator-prefixed hosting duplicate). See our methodology.
FAQ
Is there a cheaper model as good as Claude Opus 4.8?
Yes. GLM-5.2 matches or beats Claude Opus 4.8 on the overall Arena leaderboard and costs about $430.00/month versus $2,000.00/month at a typical volume of 100,000 calls — saving roughly $1,570.00/month.
How is 'as good' defined?
We only list models with an overall Arena score at or above Claude Opus 4.8's (1453). Arena scores are community preference ratings, not a single benchmark — confirm the alternative on your own task before switching.
Cite / link to this page
You’re welcome to reference this page and its figures with attribution and a link back.
https://aicalculatorpro.com/alternatives/claude-opus-4-8/<a href="https://aicalculatorpro.com/alternatives/claude-opus-4-8/">Cheaper alternatives to Claude Opus 4.8 — AI Calculator Pro</a>