claude-sonnet-5-5 vs grok-4.3
claude-sonnet-5-5 vs grok-4.3: $2/$10 vs $1.25/$2.5 per 1M, the same workload priced on both; grok-4.3 is 54% cheaper per request.
| claude-sonnet-5-5 | grok-4.3 | |
|---|---|---|
| Provider · tier | anthropic · mid | xai · mid |
| Input | $2 | $1.25 |
| Cached input | $0.1 | $0.2 |
| Cache write | $2.5 | none |
| Output | $10 | $2.5 |
| Long-context tier | none | > 200,000: $2.5 / $5 |
| Per request (2,000 in / 300 out) | $0.007 | $0.0032500000000000003 |
| Per month at 100k requests | $700 | $325 |
| …with the static prefix cached | $415 | $168 |
| Cheaper sibling (cascade) | claude-haiku-5-5 | — |
Through TokenZero
Point your SDK at the gateway and keep both keys; the cache formatter, response cache and advisory routing act on every request, and each one comes back with a signed receipt showing the list-price baseline, actual cost and the saving.
OPENAI_BASE_URL=https://tokenzero.sh/w/<key>/v1 ANTHROPIC_BASE_URL=https://tokenzero.sh/w/<key>
Questions
Which is cheaper, claude-sonnet-5-5 or grok-4.3?
At list prices (table 2026-10-26) grok-4.3 is 54% cheaper per request on a 2,000-in / 300-out workload. Quality is a separate question: TokenZero's cascade only routes to a sibling it scores as sufficient and measures parity with shadow evaluation.
Where do these prices come from?
The providers' own pricing pages, re-verified on 2026-10-26; the gateway signs receipts with the same table.