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OpenAI: GPT-5.5

openai/gpt-5-5
CompareAPITry this model

GPT-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.

Modalities
In / out per 1M$5.00 / $30
Context1M
ReleasedApr 24, 2026

Providers

7 providers serve this model upstream.

Providers serving this model
ProviderInput /MOutput /MCache read /MLatency P50Throughput P50Uptime
OpenAI$2.50$15$0.252.38s69 tps100%
OpenAI$5.00$30$0.502.76s58 tps100%
Azureeastus2$5.50$33$0.5510.28s38 tps100%
Azureswedencentral$5.50$33$0.553.12s69 tps100%
OpenAI$13$75$1.254.10s86 tps100%
Azure$5.00$30$0.506.30s28 tps99.88%
Amazon Bedrockus-east-1$5.50$33$0.55———

Market-wide measurements, refreshed every 15 minutes. They describe who serves GPT-5.5 in general, not how ProjectCOZY routes your requests.

Pricing

List rates per 1M tokens — what GPT-5.5 costs pay-as-you-go elsewhere, not what you pay here.

Input
$5.00
per 1M tokens
Output
$30
per 1M tokens
Cache read
$0.50
per 1M cached tokens
Included in every pass
GPT-5.5 is included in every ProjectCOZY pass at no extra cost — one flat rate, no per-token metering. The rates above are there for comparison.

Performance

Time to first token and output speed across every provider, over the last 3 days.

0.0s5.0s10.0s15.0s20.0s
Oct 11, 12 AMOct 11, 8 AMOct 11, 4 PMOct 12, 12 AMOct 12, 8 AMOct 12, 4 PMOct 13, 12 AMOct 13, 8 AMOct 13, 4 PMOct 14, 12 AMOct 14, 8 AM
Azure OpenAI OpenAI Amazon Bedrock (us-east-1) Azure (swedencentral)
0 tok/s100 tok/s200 tok/s300 tok/s400 tok/s
Oct 11, 12 AMOct 11, 8 AMOct 11, 4 PMOct 12, 12 AMOct 12, 8 AMOct 12, 4 PMOct 13, 12 AMOct 13, 8 AMOct 13, 4 PMOct 14, 12 AMOct 14, 8 AM
Azure OpenAI OpenAI Amazon Bedrock (us-east-1) Azure (swedencentral)

Uptime

100% of requests were served successfully over the last 3 days, across all providers.

Last 3 daysAvailability 99.89%
Oct 11, 2:00 PMNow
Availability over the last 24 hoursAvailability 99.77%
100% 97% 93% 90%
Oct 13, 2:50 PMNow

Apps

Tools that most often run GPT-5.5, by tokens this week.

Hermes AgentPersonal Agent · 36.2% of tokens25.1BFramer35.9% of tokens24.9BCodexCli Agent · 13.3% of tokens9.2BOpenClawPersonal Agent · 7.4% of tokens5.1BompCli Agent · 7.3% of tokens5.0B

Activity

252.4B tokens processed market-wide in the last month.

010.0B20.0B30.0B40.0B
Sep 14Sep 19Sep 24Sep 29Oct 4Oct 9Oct 14
Tokens

FAQ

Which model id do I use for GPT-5.5?
openai/gpt-5.5. Send it as the model field from any OpenAI-compatible client, against http://192.168.1.55/v1.
How much context does GPT-5.5 hold?
1,050,000 tokens per request, of which up to 128,000 can be the response.
What can it accept and return?
Input: file, image, text. Output: text.
What does GPT-5.5 cost on a pass?
Nothing beyond the pass itself. Pay-as-you-go elsewhere it lists at $5.00 per 1M input tokens and $30 per 1M output tokens.
How current is its knowledge?
Training data runs to Dec 2025. Anything later has to come from your prompt or a tool call.
Who built GPT-5.5?
OpenAI, in the GPT family.

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