GPT-5.5
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. It features a 1M+ token...
Input / 1M
$5.00
Output / 1M
$30.00
Context
1.0M
AA Intelligence
38.4
Closed weights — available only as a hosted API
file + image + text → text
Knowledge cutoff Dec 2025
View on OpenRouter ↗
Pricing
via OpenRouter · USD per 1M tokens · synced 2026-10-24$5.00
input / 1M
$30.00
output / 1M
$0.50
cached input / 1M
$35.00
1M in + 1M out
:batch variant
$2.50 in · $15.00 out
Price tiers
- Above 272K prompt tokens: input $10.00/M, output $45.00/M (2× base)
- Context window
- 1,050,000 tokens
- Max output
- 128,000 tokens
- Providers
- 3
- Cheapest provider
- OpenAI · $2.50 / $15.00
- Best throughput
- —
- AA Intelligence / Coding / Agentic
- 38.4 / 74.9 / 36.4
✓ Tool calling
✓ Reasoning
✓ Structured outputs
✓ Image input
✓ File input
✗ Audio input
✓ Prompt caching
Price history
tracking started — chart appears after 7 days of snapshots (6 recorded)Current: $5.00 input · $30.00 output per 1M tokens
Benchmarks
Third-party indices as published through OpenRouter — Artificial Analysis and Design Arena. Not measured by us.
- AA Intelligence Index
- 38.4
- AA Coding Index
- 74.9
- AA Agentic Index
- 36.4
Design Arena
CategoryEloWin %Rank
agenticgamedev
1179
52.4%
#14
agentichtmlslides
1084
34.2%
#8
agenticslides
1150
43.5%
#6
agenticslides(html)
1077
33.2%
#8
agenticslides(python-pptx)
1155
45.2%
#6
androidnative
1165
50.9%
#21
fullstack
1089
43%
#29
godotgamedev
1173
52.3%
#18
htmlslides
963
35.6%
#24
mobileapps
1142
50.4%
#32
pptxslides
1157
45.3%
#6
python-pptxslides
1152
43.3%
#17
webapps
1117
42.6%
#36
3d
1198
49.3%
#50
asciiart
1255
58.2%
#16
codecategories
1260
53%
#36
dataviz
1264
55.5%
#30
gamedev
1294
56.8%
#21
svg
1234
55.1%
#16
uicomponent
1256
53.3%
#37
website
1256
52.2%
#40
Providers
3 providers · per 1M tokens · last 30 min metrics| Provider | Quant | Context | Input | Output | Uptime | Tok/s |
|---|---|---|---|---|---|---|
| OpenAI | unknown | 1.0M | $2.50 | $15.00 | — | — |
| Azure | unknown | 1.0M | $5.00 | $30.00 | 100% | — |
| OpenAI | unknown | 1.0M | $5.00 | $30.00 | 100% | — |
| Amazon Bedrock | unknown | 1.0M | $5.50 | $33.00 | — | — |
| Azure | unknown | 1.0M | $5.50 | $33.00 | — | — |
| Azure | unknown | 1.0M | $5.50 | $33.00 | — | — |
| OpenAI | unknown | 1.0M | $12.50 | $75.00 | — | — |
Provider data from OpenRouter's endpoint listing, refreshed daily.
Specifications
- Organisation
- openai
- Released on OpenRouter
- 2026-04-24
- Context window
- 1,050,000 tokens
- Max output
- 128,000 tokens
- Input
- file, image, text
- Output
- text
- Knowledge cutoff
- December 2025
- Tokenizer
- GPT
- Moderated by provider
- Yes
- OpenRouter id
- openai/gpt-5.5
Compare with
Popular comparisons
Prices, context and providers from the public OpenRouter API, snapshotted daily; benchmark indices from Artificial Analysis. See /methodology.