AI Calculator Pro

Claude Opus 4.5 (latest)

Anthropic · model · context window 200,000 tokens.

Pricing (per 1M tokens)

Input$5.00
Output$25.00
Cache read$0.5000
Cache write$6.25

Specifications

Context window200,000 tokens
Max output64,000 tokens
Modalitiestext
VisionNo
Tool useYes
ReasoningNo
Prompt cachingNo

Intelligence & value

Measured
Overall1450 · #28
Coding1466 · #35

Worth it? GLM-5.3-Flash matches or beats Claude Opus 4.5 (latest) on the overall Arena and costs about $23.75/month versus $2,000.00/month at 100,000 calls — roughly $1,976.25/month cheaper.

Intelligence scores are community Arena ratings from LMArena / arena.ai, used under CC BY 4.0. Snapshot last refreshed 18 September 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.

Where else you can run Claude Opus 4.5 (latest)

The same model is resold by 21 providers we track. The typical one charges 1.2× what the cheapest does — $10.00 against $8.48 per 1M tokens, blended 3:1. Routing the same workload to a different host is often a bigger saving than switching model.

ProviderInput / 1MOutput / 1MBlended
Poe$4.30$21.00$8.48
Anthropic$5.00$25.00$10.00
Azure$5.00$25.00$10.00
Azure Cognitive Services$5.00$25.00$10.00
Cloudflare AI Gateway$5.00$25.00$10.00
Edenai$5.00$25.00$10.00
Impossibl$5.00$25.00$10.00
Kilo$5.00$25.00$10.00
NanoGPT$5.00$25.00$10.00
Neon$5.00$25.00$10.00

Showing the 10 cheapest of 21. The full list for every model is in the open endpoint dataset.

Third-party listings via models.dev, not rates we verify with each host the way we do first-party pricing. Treat them as a shortlist to check, not a quote — and confirm quantisation, context limits and rate limits before switching, since a cheaper host is not always serving the same thing.

Estimate cost with Claude Opus 4.5 (latest)

Claude Opus 4.5 (latest) is pre-selected below. Enter your token counts and volume to see the cost per request, per day and per month — then switch models to compare.

Results update automatically as you type.

Result
$0.0175 per request
~$525.00/month at 1,000 requests/day
Input cost
$0.00500
Output cost
$0.0125
Per request
$0.0175
Per day
$17.50
Per month
$525.00

Source: auto-discovery (models.dev). Prices are re-checked daily against the provider’s official pricing; this rate was last changed on 19 July 2026. A recent date here just means the price is still current, not that it moved.