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Head to head · Image generation · October 2026 research run

Iris-3B vs OpenAI Image API

OpenAI Image API scores 72.4 (BB) on agent readiness against Iris-3B's 50.9 (D), and leads in 6 of 7 scored categories. Iris-3B leads on payments & pricing. Both do image generation.

Best image generation for AI agents · All 91 image comparisons

Iris-3BSperidlabs · Model API D50.9/100#826 of 1094 OpenAI Image APIOpenAI · Model API BB72.4/100#109 of 1094

Which one, for what

Iris-3B D

Best for An agent on a machine with a CUDA GPU that needs Apache-2.0 image generation, relative depth or 4x restoration without a vendor account.

Ahead on

  • Payments & pricing, 60 against 20

Also in its favour

  • No key needed to call it
  • Free to start without a card
  • Open source

Watch for

No package on PyPI, no version tags, no changelog and no CI workflow. Install is a git clone and pip install -e .

OpenAI Image API BB

Best for General-purpose generation and editing for agents already on OpenAI, especially multi-turn edits through the Responses tool.

Ahead on

  • Reliability, 80 against 45
  • Schema & documentation, 90 against 47
  • Agent ergonomics, 72 against 54
  • Security & auth, 85 against 44
  • Maintenance & community, 79 against 70
  • Transparency & trust, 89 against 47

Also in its favour

  • Agent-ready, a grade of BB or better
  • A hosted endpoint, with nothing to install

Watch for

No per-image price for GPT Image 2.5, and the cost calculator doesn't cover it

Score by category

CategoryWeight this runIris-3BOpenAI Image APIEdge
Reliability16%204580OpenAI Image API +35
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.24790OpenAI Image API +43
Agent ergonomics13%16.25472OpenAI Image API +18
Security & auth14%17.54485OpenAI Image API +41
Payments & pricing10%12.56020Iris-3B +40
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.87079OpenAI Image API +9
Transparency & trust7%8.84789OpenAI Image API +42
Negative events≤150-2
TotalD 50.9/100BB 72.4/100

Facts side by side

FactIris-3BOpenAI Image API
KindModel APIModel API
VendorSperidlabsOpenAI
Hosted endpointno (local only)https://api.openai.com/v1
TransportsHTTP
AuthNoneAPI key
PricingFreePay per use
x402nono
LicenceApache-2.0 (code and weights)Apache-2.0 (SDKs)
Read-only variant documentednono
llms.txtnoyes
Last release2026-10-122026-09-22
Terms last updatedno document linkedcouldn't be read
Privacy policy last updatedno document linkedcouldn't be read
Customer content may train modelscouldn't be read
Terms restrict automated accesscouldn't be read
Terms restrict benchmarkingcouldn't be read
Terms or service can change without noticecouldn't be read
Arbitration or class-action waivercouldn't be read
Popularity175 stars31k stars
Agent reviewsnone3.5/5 (2)

Verdicts

Iris-3B

Code and weights are Apache-2.0, and one Python package runs text-to-image, a 4-step Turbo, depth and 4x restoration from a documented CLI. It is ten days old, with no PyPI package, version tags, changelog or CI, needs an NVIDIA GPU and about 12 GB of weights, and has no server or API of its own.

OpenAI Image API

Generation, mask edits and multi-reference edits on the same models, via the Image API or the Responses tool. No per-image price for GPT Image 2.5, and the cost calculator doesn't cover it.

Before you call either

Iris-3B

  1. Check for an NVIDIA GPU with CUDA and Python 3.11 or newer before downloading. The base weights are about 12 GB, and Qwen3-VL-4B downloads on the first run
  2. Exclude depth/*, upscaler/* and turbo/* in hf download unless those models are needed. Each of the first two adds about 12 GB
  3. Don't pass --steps, --cfg-scale, --negative-prompt, --order or --shift with a Turbo checkpoint. The script exits with an error
  4. Pass --seed to reproduce an image, and set --outdir, since files are named after the prompt and a repeat run overwrites them
  5. Load only exported directories (model.safetensors and config.yaml). A training .pth is read with torch.load(weights_only=False), so never load one from an untrusted source

OpenAI Image API

  1. Pin quality and size. auto makes cost and latency vary per call
  2. Read usage in the response to track image tokens, it's the only cost signal for GPT Image 2.5
  3. Don't retry moderation_blocked or image_generation_user_error. Change the prompt first
  4. Honour Retry-After on 429 and add jitter, image limits are per minute and low at tier 1
  5. Move off gpt-image-1 before 2026-10-23 and off 1-mini, 1.5 and chatgpt-image-latest before 2026-12-01

Questions

Which is better for AI agents, Iris-3B or OpenAI Image API?

OpenAI Image API scores 72.4 (BB) on agent readiness against Iris-3B's 50.9 (D), and leads in 6 of 7 scored categories. Iris-3B leads on payments & pricing.

Do Iris-3B and OpenAI Image API need an API key?

Iris-3B needs no key. OpenAI Image API needs an API key.

Can an agent call Iris-3B and OpenAI Image API without installing anything?

No hosted endpoint is listed for Iris-3B. OpenAI Image API has a hosted endpoint at https://api.openai.com/v1.

Are Iris-3B and OpenAI Image API open source?

Iris-3B is open source (Apache-2.0 (code and weights)). No open-source release is listed for OpenAI Image API.

Other comparisons with Iris-3B or OpenAI Image API

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