RunwayVideoReleased 29 July 2026
Gen-4.5 pricing, context and benchmark
Runway Gen-4.5 is a video generation model from Runway for text-to-video and image-to-video workflows.
n/a
Input context
n/a
Output context
$0.12
Per second
1
Providers
n/a
AA index
01 · Model Overview
Everything that matters, in one table
Context, pricing, cache, modalities and tooling, from the model registry and Artificial Analysis.
| Model | Gen-4.5 |
| Model ID | runway/gen-4.5 |
| Provider | Runway |
| Release date | 29 July 2026 |
| Status | Generally available |
| Input context | Provider default |
| Output context | Provider default |
| Official input pricing | Free per 1M tokens |
| Official output pricing | Free per 1M tokens |
| Cache read pricing | Not published |
| Market input pricing | Free per 1M (cheapest route) |
| Market output pricing | Free per 1M (cheapest route) |
| Input modalities | text · image |
| Output modalities | video |
| Reasoning control | Not exposed |
| Tool support | Text generation only |
| Tokenizer | Media |
| Provider routes | 1 endpoint |
| Artificial Analysis index | Not published |
| Speed | Not published |
| Knowledge cutoff | Not publicly stated |
Input and output support
| Modality | Input | Output | Billed at |
|---|---|---|---|
| Text | ✓ yes | no | Free in |
| Image | ✓ yes | no | Free in |
| Audio | no | no | not supported |
| Video | no | ✓ yes | not supported |
| File (PDF) | no | no | not supported |
02 · Overview
What is Gen-4.5?
Runway Gen-4.5 is a video generation model from Runway for text-to-video and image-to-video workflows.
It is designed for cinematic scene creation with strong motion quality, visual fidelity, and prompt adherence....
Gen-4.5 carries a n/a token window, uses the Media tokenizer and is served by Runway. On Hoodgen it sits in the Video tier of the model menu next to its siblings, so you can switch mid conversation without losing the thread.
03 · Release
Release and what changed from the previous version
Released29 July 2026
| Property | Grok Imagine Video 1.5 | Gen-4.5 | Change |
|---|---|---|---|
| Released | Jul 2026 | Jul 2026 | Same release window |
| Context | n/a | n/a | Unchanged |
| Max output | n/a | n/a | Unchanged |
| Input price | Free | Free | Unchanged |
| Output price | Free | Free | Unchanged |
| Input modalities | text, image | text, image | Unchanged |
| AA index | n/a | n/a | Newer benchmark run |
04 · Capabilities
Features and capabilities
◉
Vision
Screenshots, charts and photographed documents are read at the text token rate.
07 · Use cases
What can you do with Gen-4.5?
Everyday writing
Drafts, rewrites, summaries and replies.
Research
Source material condensed with the key numbers kept.
Chat
General questions where latency and cost both matter.
Tooling inside Hoodgen
Writer, Humanizer, Coding and the rest of the tool suite.
09 · Pricing
Gen-4.5 pricing
Official pricing
Per second
$0.12 / second
- Video Output: $0.12 per second
- video output from text, image input
Cheapest route
Free / 1M in
Free / 1M out
- 1 route on OpenRouter
- What Hoodgen routes to first
- Same model, lower bill
Market pricing, every route
| Provider | Tier | Input | Output | Cache read | Uptime 24h |
|---|---|---|---|---|---|
| Runway | standard | n/a | n/a | n/a | n/a |
API pricing and cost calculator
| Rate | Per call | Total | Credits |
|---|---|---|---|
| Cheapest route | $0.0000 | $0.00 | 1 |
| List price | $0.0000 | $0.00 | 1 |
10 · Developers
API and developer information
| Model ID | runway/gen-4.5 |
| Endpoint | https://openrouter.ai/api/v1/chat/completions |
| Parameters | prompt and max_tokens |
| Streaming | Yes, server sent events |
| Modality string | text+image->video |
| Max prompt tokens | provider default |
| Max completion tokens | provider default |
curl https://openrouter.ai/api/v1/chat/completions \
-H "Authorization: Bearer $OPENROUTER_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "runway/gen-4.5",
"messages": [{ "role": "user", "content": "Summarise this document." }],
"max_tokens": 1024
}'11 · Limitations
Model limitations
| Output cap | Provider default tokens per request. Long deliverables have to be chunked. |
| Benchmarks not published | Artificial Analysis does not publish an Intelligence Index for this release, so no benchmark score is claimed here. |
| Knowledge cutoff | The provider does not state a fixed cutoff for every release. Verify very recent events against search. |
12 · Comparison
Gen-4.5 vs other Runway models
| Model | Context | Input /1M | Output /1M | AA index | Released |
|---|---|---|---|---|---|
| Gen-4.5 | n/a | Free | Free | n/a | Jul 2026 |
| Wan 2.7 | n/a | Free | Free | n/a | Apr 2026 |
| FLUX 3 Video | n/a | Free | Free | n/a | Aug 2026 |
| FLUX Video Edit | n/a | Free | Free | n/a | Sept 2026 |
| FLUX Video Upscale | n/a | Free | Free | n/a | Aug 2026 |
| Seedance 2.0 | n/a | Free | Free | n/a | Apr 2026 |
13 · Privacy
Privacy and data policy
- On Hoodgen, prompts and attachments answer that request and stay in your conversation history so you can reopen it. They are not used to train models.
- Requests route through OpenRouter to Runway and are covered by that provider's API terms.
- Do not paste secrets or personal data you would not send to any hosted model.
14 · FAQ
Gen-4.5 questions, answered
Gen-4.5 is a video model from Runway, released 29 July 2026. Runway Gen-4.5 is a video generation model from Runway for text-to-video and image-to-video workflows.
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Start chatting with Gen-4.5
Free to try on Hoodgen AI, with a live credit estimate before every send. No API key, no setup.