SmolVLA 450M vs GPT-5.5 Pro
At a Glance
| Compare |  SmolVLA 450MHugging Face LeRobot |  GPT-5.5 ProOpenAI |
|---|---|---|
| Pricing and Limits | ||
| Context windowMaximum documented tokens | Not reported | 1,050K |
| Model facts checked | Aug 29, 2026View model evidence → | Sep 3, 2026View model evidence → |
Available Benchmarks
Side-by-Side Facts
| Field | SmolVLA 450M | GPT-5.5 Pro |
|---|---|---|
| Developer | Hugging Face LeRobot | OpenAI |
| Family | SmolVLA | Gpt 5 5 |
| Model | SmolVLA 450M | GPT-5.5 Pro |
| Version | 450M | GPT-5.5 Pro |
| Lifecycle | active | active |
| Released | 2025-06-03 | 2026-04-23 |
| Knowledge cutoff | Unknown | 2025-12-01 |
| Input modalities | Text, Image, Robot state | Text, Image |
| Output modalities | Robot action | Text |
| Context window | Unknown | 1,050K |
| Total parameters | 450M | Unknown |
| Active parameters | Unknown | Unknown |
| License | apache-2.0 | Unknown |
| Open weights | Yes | No |
| API available | No | Yes |
| Self-hostable | Yes | No |
| Provider access | Unknown | Openai (Standard), Openrouter (Standard) |
| Capabilities | asynchronous-inference, fine-tuning, low-cost-hardware, manipulation | chat, generation, reasoning, structured_outputs, tools |
| Robotics model type | Vision-language-action model | Unknown |
| Action representation | Continuous action chunks from a flow-matching action expert | Unknown |
| Control architecture | SmolVLM2 backbone with flow-matching action expert | Unknown |
| Inference location | On device | Unknown |
| Native control rate (Hz) | Unknown | Unknown |
| Supported embodiments | SO-100, SO-101, LeKiwi, LIBERO Franka | Unknown |
| Training data | Compatibly licensed LeRobot community datasets totaling fewer than 30,000 episodes in the cited release. | Unknown |
SmolVLA 450M Capabilities
GPT-5.5 Pro Capabilities
Related Comparisons
| A | Pair | B | Context |
|---|---|---|---|
SmolVLA 450MHugging Face LeRobot | vs | GPT-6 AstraOpenAI | cross-developer peers |
Claude Fable 5.1Anthropic | vs | SmolVLA 450MHugging Face LeRobot | cross-developer peers |
 Gemini 3.1 ProGoogle DeepMind | vs | SmolVLA 450MHugging Face LeRobot | cross-developer peers |
 DeepSeek-V4.1-FlashDeepSeek | vs | SmolVLA 450MHugging Face LeRobot | cross-developer peers |
SmolVLA 450MHugging Face LeRobot | vs | Grok 4.6xAI | cross-developer peers |
SmolVLA 450MHugging Face LeRobot | vs |  Qwen3.8-MaxQwen | cross-developer peers |
SmolVLA 450MHugging Face LeRobot | vs |  Kimi-K3Moonshot AI | cross-developer peers |
 MiniMax-M3MiniMax | vs | SmolVLA 450MHugging Face LeRobot | cross-developer peers |
SmolVLA 450MHugging Face LeRobot | vs |  GLM-5.3Z.ai | cross-developer peers |
SmolVLA 450MHugging Face LeRobot | vs |  Hy4 previewTencent | cross-developer peers |
Seed 2.1 ProByteDance Seed | vs | SmolVLA 450MHugging Face LeRobot | cross-developer peers |
SmolVLA 450MHugging Face LeRobot | vs |  Mistral Large 3Mistral AI | cross-developer peers |
Primary Evidence
Sources and Freshness
Questions
SmolVLA 450M vs GPT-5.5 Pro FAQs
Is SmolVLA 450M or GPT-5.5 Pro better for coding?+
This comparison does not currently contain a protocol-matched coding benchmark for both SmolVLA 450M and GPT-5.5 Pro, so Model Markets cannot name a coding leader from pricing, context size, or capability labels alone.
Which is cheaper, SmolVLA 450M or GPT-5.5 Pro?+
Only GPT-5.5 Pro has a directly sourced input price: $30.00 per million tokens. Only GPT-5.5 Pro has a directly sourced output price: $180.00 per million tokens.
Which has a larger context window, SmolVLA 450M or GPT-5.5 Pro?+
Neither model has a larger sourced context window in this comparison. SmolVLA 450M is — and GPT-5.5 Pro is 1,050K.
Which performs better in benchmarks, SmolVLA 450M or GPT-5.5 Pro?+
There is no overall benchmark winner: At least two independently verified, protocol-matched benchmarks are required for an overall winner.
Can SmolVLA 450M or GPT-5.5 Pro be self-hosted?+
SmolVLA 450M is the only model in this pair currently marked as self-hostable. SmolVLA 450M is open weight; GPT-5.5 Pro is not marked open weight.
Can SmolVLA 450M and GPT-5.5 Pro understand images?+
SmolVLA 450M is documented with image input; GPT-5.5 Pro is documented with image input. This reflects supported input modalities, not vision quality.
Which can generate longer answers, SmolVLA 450M or GPT-5.5 Pro?+
Neither has a larger sourced maximum output. SmolVLA 450M is — and GPT-5.5 Pro is 128K.
Do SmolVLA 450M and GPT-5.5 Pro support reasoning and tool use?+
SmolVLA 450M: image input. GPT-5.5 Pro: reasoning, tool calling, and image input. Feature support does not establish relative quality.
Which is available from more inference providers, SmolVLA 450M or GPT-5.5 Pro?+
SmolVLA 450M has 0 sourced provider routes; GPT-5.5 Pro has 2, so GPT-5.5 Pro has broader tracked availability.
Which offers better value, SmolVLA 450M or GPT-5.5 Pro?+
There is no universal value winner. Compare the input and output prices above with the matched benchmark result for your workload: cheaper tokens can be offset by different quality, token usage, latency, or provider availability.