OpenAI model API pricing
OpenAI gpt-5.5-pro API pricing
Direct answer
As of June 27, 2026, OpenAI's gpt-5.5-pro lists at $30.00 per 1M input tokens and $180.00 per 1M output tokens in the ByteCosts pricing index (A+ confidence, source last checked 2026-06-27), with no context window stated in this record, which is a planning estimate you should verify against the provider source before billing, because output volume, retries, and prompt-cache hit rate move the real gpt-5.5-pro bill far more than the headline input rate.
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gpt-5.5-pro price card
List prices per million tokens from the ByteCosts pricing index, graded A+ confidence. Output tokens are the expensive side of almost every bill.
| Price field | Value |
|---|---|
| Input | $30.00 / 1M tokens |
| Output | $180.00 / 1M tokens |
| Cached input (read) | not published |
| Cache write | not published |
| Cache write (1h) | not published |
| Context window | not in this record |
Context window and output limits
What gpt-5.5-pro can hold in a single request, and where ByteCosts stops short of a source-backed claim.
- Context window: not part of this committed pricing record; check the provider page for the current limit.
- Maximum output tokens: not a field in this committed pricing record. ByteCosts only states source-backed numbers, so treat the provider documentation as authoritative for the per-response output cap.
What it costs at real workloads
Each row is computed from this record's committed input and output token prices with the ByteCosts cost engine. Assumptions are shown inline.
| Workload | Assumed monthly tokens | Estimated token cost |
|---|---|---|
| Light reference | 1M input + 250K output tokens/month | $128 / month |
| Production reference | 10M input + 2.5M output tokens/month | $1,275 / month |
| Heavy reference | 100M input + 25M output tokens/month | $12,750 / month |
Best-fit workloads for gpt-5.5-pro
Where this price profile is cost-effective, and where it is not, derived from the committed input, output, cache, and context fields.
- Good fit: Input-heavy, short-output work (RAG, extraction, classification, reranking pre-filters): output costs about 6.0x input here, so keeping responses tight protects the budget.
- Not ideal: High-volume long-form generation: output is about 6.0x the input price ($180.00 vs $30.00 per 1M), so verbose or reasoning-heavy responses dominate the invoice.
- Not ideal: Workloads that resend a large shared prefix on every call, because this record has no committed prompt-cache discount to amortize that prefix.
When gpt-5.5-pro is cost-effective
gpt-5.5-pro ranks 9 of 9 OpenAI records by combined list price ($210.00 for 1M input plus 1M output tokens). That puts it in the higher-priced third of this provider's committed records.
No source-backed cache-read discount is committed for this record, so the page does not assume cache savings.
No context window is committed for this record, so there is no long-context cost signal to apply.
Cheaper alternatives
Records with a lower combined input plus output list price than this one. Same-provider and same-model cross-provider records are preferred where available.
| Record | Input / 1M | Output / 1M | Combined / 1M + 1M | Detail page |
|---|---|---|---|---|
| OpenAI gpt-5.4-nano | $0.200 | $1.25 | $1.45 | /tools/ai-provider-pricing/openai--gpt-5.4-nano |
| OpenAI gpt-5.4-mini | $0.750 | $4.50 | $5.25 | /tools/ai-provider-pricing/openai--gpt-5.4-mini |
| OpenAI gpt-4o-transcribe | $2.50 | $10.00 | $12.50 | /tools/ai-provider-pricing/openai--gpt-4o-transcribe |
Evidence, freshness, and limitations
ByteCosts grades this OpenAI gpt-5.5-pro row A+: Read from the provider's official pricing page. The record was first tracked on 2026-05-30 and last checked on 2026-06-27, and the source URL stays attached so you can verify the provider source before a purchasing or architecture decision.
Every number here is a planning estimate, not a quote. Real invoices can differ because taxes, negotiated and volume discounts, minimum commitments, batch and priority tiers, gateway and observability fees, and non-token charges are excluded unless they appear in the committed record. Verify the provider source and quote the last-checked date with any copied figure, because model prices change often.
Hidden costs to watch
Flags attached to this source-backed record. They do not change the list price but they change the effective bill.
- no prompt caching
Frequently asked questions
How much does OpenAI gpt-5.5-pro cost per 1M tokens?
gpt-5.5-pro lists at $30.00 per 1M input tokens and $180.00 per 1M output tokens in the ByteCosts index. Output is about 6.0x the input price, so completion length drives the bill. See the price card and cost examples above for current per-workload figures.
Is gpt-5.5-pro cheaper than the alternatives?
On combined list price, 3 records in the index come in lower than gpt-5.5-pro, listed in the cheaper-alternatives table. Whether one is actually cheaper for you depends on your token mix, cache hit rate, and quality bar, so compare on your real workload in the calculator.
How fresh is this gpt-5.5-pro price and where is it from?
The price comes from OpenAI's official source, normalized into the ByteCosts pricing index, graded A+ confidence, and last checked 2026-06-27. Prices are list prices and exclude negotiated discounts; verify the provider source before production billing.
Cite this page
OpenAI gpt-5.5-pro API pricing. ByteCosts. Updated 2026-06-27. https://bytecosts.com/pricing/openai/gpt-5-5-pro/