Pricingby GlyphGPT-5.5 is OpenAI’s frontier model designed for complex professional workloads, building on GPT-5.4 with stronger reasoning, higher reliability, and improved token efficiency on hard tasks.
Ways to buy 7
| Way to buy | Input | Output | In / out per 1M | Cached | Vs list |
|---|---|---|---|---|---|
flex, cheapest · cached $0.25 | $2.5 | $15 | $2.5 / $15-50% vs list | $0.25 | -50% vs list |
The lab's own API · cached $0.5 | $5 | $30 | $5 / $30List price | $0.5 | List price |
Default region · cached $0.5 | $5 | $30 | $5 / $30Same as list | $0.5 | Same as list |
 AWS Bedrockus-east-1 · cached $0.55 | $5.5 | $33 | $5.5 / $33+10% vs list | $0.55 | +10% vs list |
eu · cached $0.55 | $5.5 | $33 | $5.5 / $33+10% vs list | $0.55 | +10% vs list |
us · cached $0.55 | $5.5 | $33 | $5.5 / $33+10% vs list | $0.55 | +10% vs list |
fast · cached $1.25 | $12.5 | $75 | $12.5 / $75+150% vs list | $1.25 | +150% vs list |
USD per 1M tokens; batch $2.5 in, $15 out on the lab's API. Regions are separate routes.
Through a gateway
Your own numbers100M input and 20M output tokens a month: $1,100 direct.
Kong AI Gateway$1,100+0%
LiteLLM$1,100+0%
Neon AI Gateway$1,100+0%
Vercel AI Gateway$1,100+0%
Cloudflare AI Gateway$1,155+5%
Requesty$1,155+5%
Eden AI$1,161+5.5%
OpenRouter$1,161+5.5%
HeliconeNot offeredNot offered
A dash: not on that gateway's own model list. No published token fee: Martian Gateway, Portkey, TrueFoundry AI Gateway.
Related models
| In / out per 1M | Cheapest route | |||||||
|---|---|---|---|---|---|---|---|---|
OpenAI · 1.05MCheapest: $1 on OpenAI (flex) | $1 | $5 | $1 / $5 | $2 | 1.05M | $1 on OpenAI (flex) | · | GPT-6.1 Terra is the mid-tier model in OpenAI's GPT-6.1 series, priced below GPT-6.1 Sol. |
OpenAI · 1.05MCheapest: $1 on OpenAI (flex) | $1 | $5 | $1 / $5 | $2 | 1.05M | $1 on OpenAI (flex) | · | GPT-6.1 Terra Pro is the same underlying model as GPT-6.1 Terra, served with reasoning.mode set to pro for higher-quality responses on complex tasks. |
OpenAI · 1.05MCheapest: $2 on OpenAI (flex) | $2 | $10 | $2 / $10 | $4 | 1.05M | $2 on OpenAI (flex) | · | GPT-6.1 Sol is an upgrade to GPT-6 Sol from OpenAI, positioned below the flagship GPT-6 Astra in the GPT-6 series. |
OpenAI · 1.05MCheapest: $2 on OpenAI (flex) | $2 | $10 | $2 / $10 | $4 | 1.05M | $2 on OpenAI (flex) | · | GPT-6.1 Sol Pro is the same underlying model as GPT-6.1 Sol, served with reasoning.mode set to pro for higher-quality responses on complex tasks. |
Anthropic · 1M | $10 | $50 | $10 / $50 | $20 | 1M | Lab list price | · | Claude Fable 5.1 improves on Claude Fable 5 across the board, with the biggest gains in agentic coding, long-running agentic workflows, and knowledge work: long code refactors, front-end and visual... |
Anthropic · 1M | $4 | $20 | $4 / $20 | $8 | 1M | Lab list price | · | Claude Opus 5.5 is Anthropic's flagship model for demanding reasoning, coding, and long-horizon agentic work, succeeding Claude Opus 5. |
Anthropic · 1M | $10 | $50 | $10 / $50 | $20 | 1M | Lab list price | · | Claude Fable 5 is a Mythos-class model from Anthropic, built for autonomous knowledge work and coding. |
Anthropic · 1M | $5 | $25 | $5 / $25 | $10 | 1M | Lab list price | · | Claude Opus 5 is Anthropic’s flagship model for demanding reasoning, coding, and long-horizon agentic work. |
About GPT-5.5
Takes files, image, text in and returns text. First listed Apr 25, 2026. Up to 128K output tokens. Blended price $11.3 per 1M tokens at 3 input to 1 output. Overall score 5 on leadersboard.fru.dev (rank 26). Model id gpt-5-5.
Price history
List price since Apr 25, 2026, from Internet Archive snapshots of the OpenRouter catalog, then daily reads.
Questions
How much does GPT-5.5 cost?
$5 per million input tokens and $30 per million output tokens, with cached input at $0.5, or $2.5 and $15 through the Batch API.
What is the context window of GPT-5.5?
1.05M tokens, with up to 128K tokens of output.
Where is GPT-5.5 cheapest?
Of 7 routes tracked, OpenAI is cheapest at $2.5 input and $15 output per million tokens.