ChatGPT chat-latest
Unavailable in this round
Language modelAPI only
ChatGPT chat-latest
OpenAI
- Released
- June 2026
- Data date
- September 8, 2026
- Benchmark-Meta-Score
- UnavailableNo independent results
- Price
- Input · Output / 1M tokens
- Input
- Text, Image
- Output
- Text
ChatGPT chat-latest follows a changing model rather than a fixed checkpoint. OpenAI points this API alias at the current Instant model in ChatGPT and can update its target. The same identifier therefore follows changes to ChatGPT’s model.
Specifications and access
| Specification | Value and source |
|---|---|
| Weights | ProprietarySource |
| Access | APISource |
| Context window | 400,000 tokensSource |
| Knowledge cutoff | August 31, 2025Source |
| Notes | API alias for the current Instant model in ChatGPT. OpenAI regularly updates the underlying model; the alias does not pin a model version.Source |
| API model ID | chat-latestSource |
| Maximum output | 128,000 tokensSource |
| Input | Text, ImageSource |
| Output | TextSource |
| Reasoning mode | noneSource |
| API interfaces | Responses API, Chat Completions APISource |
| Tool calling | YesSource |
| Structured output | YesSource |
| Alias target | Current Instant model in ChatGPT; regularly updated (retrieved 2026-09-22)Source |
| Capabilities | Streaming, function calling and structured outputs. No fine-tuning. (retrieved 2026-09-22)Source |
| Availability | API usage tiers 1-5. Not available on the free API tier; limits depend on the usage tier. (retrieved 2026-09-22)Source |
Our tests
SVG short test
One SVG prompt and fixed output settings. Captures are shown only with 0 reported reasoning tokens or documented lack of reasoning controls. Identical test conditions do not make the models' internal compute identical.
Earlier tests
Pelican on a bicycle
A community classic for free-form SVG drawing.
ChatGPT chat-latest
Reasoning (requested): not specified
Current attempt
- Run date
- Oct 1, 2026
- API provider
- openrouter
- Requested API model
- openai/gpt-chat-latest
- API model reported in response
- openai/gpt-chat-latest
- Reasoning setting
- not specified
- Pinned endpoint
- OpenAI | openai/gpt-chat-latest-20260505
- Temperature
- Provider default
- Token limit including reasoning
- 8,192 tokens
- Test protocol
- community-visual-tests-v1
- Technical checks
- Passed, not a quality rating
- Response time
- 10.6 s
Visually reviewed. This individual test does not establish overall model quality.
Prompt and test conditions
Generate an SVG of a pelican riding a bicycle
Token limit including reasoning: 8,192 tokens
Task origin (Simon Willison)Popularity
17.5 / 100
Sources and data date
| Type | Evidence and data date |
|---|---|
| Price | Base API prices without caching or batch discounts. Higher context tiers and other rates are listed under Costs. |
| Input | Documented modalities. Retrieved September 8, 2026. |
| Output | Documented modalities. Retrieved September 8, 2026. |
| Research status | Research date September 8, 2026. 4 source URLs checked. This documents the inspected sources, not an exhaustive inventory of every publication. |
| Unresolved | benchmarks Note No benchmark results are unambiguously attributed to this changing API alias. |
| Not found in the inspected sources | parameters-billions Note OpenAI does not publish a parameter count for this model. |
| Unresolved | AA benchmark rows Note The checked Artificial Analysis directory contained no page for this exact API alias. |
| Unresolved | quality-benchmarks Note The API model is a moving alias. No official bridge to a fixed checkpoint with benchmark rows was established; checkpoint scores are not transferred. |
| Additional source | OpenAI API model catalog · Editorial description reviewed October 2, 2026 |
| Additional source | OpenRouter: Popularity index (derived), CC BY 4.0 |
| Additional source | Vercel AI Gateway: Popularity index (derived), CC BY 4.0 |
| Additional source | Ollama: cumulative downloads for the popularity index |
| Additional source | Replicate: cumulative runs for the popularity index |
| Additional source | Google Trending Now: limited feed selection for Germany and the US |
| Additional source | Creative Commons Attribution 4.0 |