GPT-5 Chat
GPT-5 Chat is worth evaluating for rag, agents, and long context when its provider route and context window match the workload.
Use it for
- Teams evaluating rag, agents, and long context
- Workloads that can use a 128k context window
- Buyers comparing 2 tracked provider routes
Do not use it for
- Workloads where another current model has stronger sourced task evidence
- Family
- GPT-5
- Released
- 2025-10-01
- Context
- 128k
- Architecture
- Decoder Only
- Knowledge cutoff
- 2024-09
- Specialization
- general
- Openness
- Proprietary
- License
- ProprietaryCommercial use: conditional
- Weights
- Not released
- Code
- Unknown
- Training
- Pretrained
Cheapest of 2 routes · OpenRouter · cache read $0.130
About
GPT-5 Chat is OpenAI's conversational variant of GPT-5 designed for advanced multimodal, context-aware enterprise conversations at 128K context.
GPT-5 Chat is a proprietary model in the GPT-5 family. The structured metadata tracks a 128k-token context window, multimodal input, function calling, tool use, and structured outputs. This page tracks provider routes through Vercel AI Gateway and OpenRouter, with the cheapest tracked route listed at $1.25 input and $10 output per 1M tokens. No headline benchmark score is tracked for GPT-5 Chat yet.
Top use-case fit: coding, agents, and build tasks
RAG
Included by capability and metadata signals in the decision map.
Agents
Included by capability and metadata signals in the decision map.
Long context
Included by capability and metadata signals in the decision map.
Provider price ladder
Compare all 2Compare API pricing across 2 providers for input and output tokens, batch, and cached reads when available.
| Provider | Input / 1M | Output / 1M | Cache | Route |
|---|---|---|---|---|
| OpenRouter | $1.25 | $10.00 | read $0.130 | Serverless |
| Vercel AI Gateway | $1.25 | $10.00 | read $0.125 | Serverless |
Capabilities
Benchmark peer barsfor RAG
No task-mapped benchmark peers are available for this model yet.
Migration checks
No linked migration route is available for this model yet.
Frequently asked questions
What is the context window of GPT-5 Chat?
GPT-5 Chat has a context window of 128k tokens.
How much does GPT-5 Chat cost?
GPT-5 Chat is available at $1.25/1M input tokens through Vercel AI Gateway.
When was GPT-5 Chat released?
GPT-5 Chat was released on 2025-10-01.
Which providers offer GPT-5 Chat?
GPT-5 Chat is available from 2 providers: Vercel AI Gateway, OpenRouter.
Cheapest of 2 routes · OpenRouter · cache read $0.130