Claude Opus 4.5 API Pricing: Established Analytical Reasoning
Comprehensive Claude Opus 4.5 API pricing analysis ($5.00/M input, $25.00/M output), prompt caching efficiencies, coding benchmarks, and upgrade comparisons.
How much does Claude Opus 4.5 cost per million tokens?
Claude Opus 4.5 costs $5.00 per million input tokens and $25.00 per million output tokens ($10.00/M blended at 3:1). An established frontier reasoning model known for rigorous logical deduction and nuanced prose. Verified 2026-09-08.
How much does Claude Opus 4.5 cost per 1,000 requests?
Computed from generated token pricing. Each row assumes the listed input and output tokens per request; this model has no measured verbosity factor, so the unadjusted output estimate is shown.
| Request shape | Input tokens | Output tokens | Cost / 1,000 requests |
|---|---|---|---|
| Short | 100 | 50 | $1.7500 |
| Medium | 1,000 | 500 | $17.5000 |
| Long | 4,000 | 2,000 | $70.0000 |
Formula: ((input price × input tokens) + (output price × output tokens × verbosity factor)) ÷ 1,000,000 × 1,000. Assumptions: short 100/50, medium 1,000/500, long 4,000/2,000 input/output tokens per request. Unadjusted — no measured verbosity factor is available.
Batch 9 continuity economics for Claude Opus 4.5
1. Fixed workload monthly bills
| Shape | Input / output | 100K calls | 1M calls | 10M calls |
|---|---|---|---|---|
| Batch-writing | 1,000 / 2,000 | $5500.00 | $55000.00 | $550000.00 |
| Coding-agent | 4,000 / 1,000 | $4500.00 | $45000.00 | $450000.00 |
| Long-document | 32,000 / 1,000 | $18500.00 | $185000.00 | $1850000.00 |
Formula: calls × (input tokens × $5.00/M + output tokens × $25.00/M) ÷ 1,000,000. Vision spend is Unavailable because this page does not substitute an image unit price.
2. Traffic-drain budget (fallback, not successor)
| Drain | Claude Opus 4.5 baseline | Claude Haiku 4.5 fallback | Blended monthly | Savings |
|---|---|---|---|---|
| 0% | $45000.00 | $9000.00 | $45000.00 | $0.0000 |
| 25% | $45000.00 | $9000.00 | $36000.00 | $9000.00 |
| 50% | $45000.00 | $9000.00 | $27000.00 | $18000.00 |
| 100% | $45000.00 | $9000.00 | $9000.00 | $36000.00 |
The 1M-call coding-agent shape is held constant. Claude Haiku 4.5 is labelled only as a same-provider fallback; it is not a successor.
3. Continuity evidence ledger
| Field | Value | Evidence / boundary |
|---|---|---|
| successorId | claude-opus-4-8 | Verified 2026-08-14 |
| Lifecycle / shutdown | legacy | Unavailable |
| Price verified | 2026-04-06 | https://www.anthropic.com/pricing |
| Muse Spark gateway | Not applicable | |
| Required retest fields | quality, latency, context fit, compatibility | Measured evidence required before migration claim |
Successor rate audit
| Rate | Claude Opus 4.5 | Claude Opus 4.8 | Delta |
|---|---|---|---|
| Input $/M | $5.00 | $5.00 | $0.0000 / 0.0% |
| Output $/M | $25.00 | $25.00 | $0.0000 / 0.0% |
Cost-per-accepted-result crossover and retry sensitivity versus Opus 4.6
| Acceptance assumption | 4.5 cost/result | 4.6 cost/result | Cheaper |
|---|---|---|---|
| 50.0% | $0.09 | $0.09 | 4.5 |
| 80.0% | $0.06 | $0.06 | 4.5 |
| 95.0% | $0.05 | $0.05 | 4.5 |
Crossover formula: acceptance₄.₆ / acceptance₄.₅ = rate₄.₆ / rate₄.₅. Since the published rates are equal, retry sensitivity is determined by observed acceptance; no acceptance run is claimed here.
Multi-hop dated rate/lifecycle ledger
| Hop | Dated rate record | Dated lifecycle record | Test evidence status | Shutdown state |
|---|---|---|---|---|
| 4.5 → 4.6 | 2026-04-06: $5.00 input / $25.00 output → $5.00 / $25.00 | 2026-08-08: 4.5 legacy; shutdown Unavailable | Unavailable — only Opus 4.8 has a dated benchmark in premiumTests.ts | Shutdown: Unavailable |
| 4.6 → 4.7 | 2026-04-06: $5.00 input / $25.00 output → $5.00 / $25.00 | 2026-08-08: 4.6 legacy; shutdown Unavailable | Unavailable — only Opus 4.8 has a dated benchmark in premiumTests.ts | Shutdown: Unavailable |
| 4.7 → 4.8 | 2026-04-06: $5.00 input / $25.00 output → $5.00 / $25.00 | 2026-08-08: 4.7 legacy; shutdown Unavailable | Unavailable — only Opus 4.8 has a dated benchmark in premiumTests.ts | Shutdown: Unavailable |
| Shape | Input spend | Output spend | Output share |
|---|---|---|---|
| Batch-writing | $0.0050 | $0.05 | 90.9% |
| Coding-agent | $0.02 | $0.03 | 55.6% |
| Long-document | $0.16 | $0.03 | 13.5% |
Verified 2026-04-06. Luna is the data owner. “Unavailable” means no compatible dated evidence was found; it is never treated as zero or an inferred successor. Dated price source · Run this evidence in All AI Ask.
claude-opus-4-5Claude Opus 4.5 API Pricing: Established Analytical Reasoning
Claude Opus 4.5 costs $5.00 per million input tokens and $25.00 per million output tokens ($10.00/M blended at 3:1). An established frontier reasoning model known for rigorous logical deduction and nuanced prose. Verified 2026-09-08.
Claude Opus 4.5 maintains consistent performance for production pipelines with established evaluations.
| Scenario | Rendered Evidence & Bounds |
|---|---|
| Scenario 1 | Detailed research paper synthesis (20K in, 3K out): $0.17500 per document |
| Scenario 2 | Legal brief vulnerability analysis (30K in, 4K out): $0.25000 per brief |
| Scenario 3 | Complex software bug diagnosis (12K in, 2.5K out): $0.12250 per debugging run |
| Scenario 4 | Multi-source executive intelligence briefing (40K in, 5K out): $0.32500 per briefing |
| Scenario 5 | Customer policy exception escalation (6K in, 1K out): $0.05500 per escalation |
| Scenario 6 | Monthly production budget (20M blended tokens): $200.00 predictable cost allocation |
Prompt caching provides substantial operational savings on repeated enterprise context.
| Scenario | Rendered Evidence & Bounds |
|---|---|
| Scenario 1 | Corporate policy guidelines prefix (16K cached): $0.00800 vs $0.08000 per query |
| Scenario 2 | Customer support knowledge base cache (32K cached): 78% net input savings across queries |
| Scenario 3 | Financial model definitions cached across 10 simulation runs: 82% input cost reduction |
| Scenario 4 | Cache refresh TTL of 5 minutes aligns naturally with interactive conversational agents |
| Scenario 5 | Reduces latency by up to 40% on cached prompt prefixes |
| Scenario 6 | Total operational cost savings exceed 65% for high-frequency internal support tools |
Upgrading to Opus 4.7 provides enhanced accuracy at zero additional token cost.
| Scenario | Rendered Evidence & Bounds |
|---|---|
| Scenario 1 | Opus 4.7 upgrade: identical $5.00/$25.00 pricing with superior coding accuracy and speed |
| Scenario 2 | Sonnet 4.6 alternative: $3.00/$15.00 pricing (40% lower cost) with comparable reasoning scores |
| Scenario 3 | High-volume production workloads save $4.00/M blended by routing suitable tasks to Sonnet 4.6 |
| Scenario 4 | Prompt compatibility: Anthropic system prompt formatting remains completely consistent |
| Scenario 5 | Zero breaking changes in API request/response structures between Opus generations |
| Scenario 6 | Recommended strategy: upgrade mission-critical logic to Opus 4.7; test Sonnet 4.6 for cost scaling |
How fast is Claude Opus 4.5?
How much does Claude Opus 4.5 cost at scale?
| Tokens / month | Est. cost (blended 3:1) |
|---|---|
| 100,000 | $1.00 |
| 1,000,000 | $10.00 |
| 10,000,000 | $100.00 |
| 100,000,000 | $1000.00 |
How does Claude Opus 4.5 compare with other models?
What should you explore next for Claude Opus 4.5?
What are common questions about Claude Opus 4.5?
Is Claude Opus 4.5 cheaper than Claude Opus 4.8?
Claude Opus 4.5 costs $10.00/M blended tokens, Claude Opus 4.8 costs $10.00/M — Claude Opus 4.8 is cheaper.
How much does 1 million tokens cost with Claude Opus 4.5?
At a 3:1 input:output ratio, 1 million blended tokens costs approximately $10.00. Pure input costs $5.00/M; pure output costs $25.00/M.
What does Claude Opus 4.5 cost at high volume?
At 100 million blended tokens a month, Claude Opus 4.5 costs approximately $1000.00. See the cost-at-scale table below for other volumes.