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Side-by-side: what they do, what they cost, what Kai actually thinks. Pass up to 4 tools via ?tools=claude,chatgpt,gemini.
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Flux (Black Forest Labs)
A
Symphony
A
Adobe Firefly
A
DALL-E 3
B
TaglineOpen weights + strong photorealism. The open-source answer.OpenAI's open-source daemon that turns your Linear board into an always-on coding agent factory — tickets go in, pull requests come out.Commercially safe image gen, deeply integrated with Photoshop.OpenAI's image model. Built into ChatGPT Plus.
CategoryImageAgentsImageImage
PricingAPI + open weights (Schnell is Apache 2.0)Free (open-source)Free + included with Creative CloudIncluded with ChatGPT Plus $20/mo
Best forDevelopers + power users who want control and privacy.Engineering teams already using Linear + OpenAI Codex who want to stop babysitting agent sessions and instead let the issue tracker drive autonomous coding at scale.Anyone in Creative Cloud. Brands that need copyright clarity.ChatGPT Plus users who want images without paying extra.
Strengths
  • Runs locally on a beefy GPU
  • Very photoreal
  • Best open-weight model
  • Fully autonomous ticket-to-PR pipeline: every open Linear issue gets its own isolated Codex agent without manual supervision
  • Fault-tolerant Elixir/OTP architecture automatically restarts crashed agents and manages hundreds of concurrent runs
  • WORKFLOW.md keeps all orchestration policy version-controlled inside the repo, so agent behavior is reproducible and reviewable like code
  • Proven internal results: OpenAI reported a 500% increase in landed PRs on some teams within three weeks
  • Open spec encourages community re-implementations in any language, not just Elixir
  • Trained on licensed content — commercially safe
  • Generative Fill in Photoshop is incredible
  • Native to Adobe ecosystem
  • Excellent prompt understanding
  • Built into ChatGPT — no extra subscription
  • Good at composition + concepts
Weaknesses
  • Harder to use than hosted tools
  • Needs infra
  • Currently only supports Linear as an issue tracker — GitHub Issues and Jira integrations are not yet official
  • Only OpenAI Codex is officially supported as the agent runtime; other model integrations are community-contributed and incomplete
  • Self-hosted, Elixir-dependent engineering preview with no built-in sandboxing — not suitable for untrusted or production environments out of the box
  • Aesthetic ceiling below Midjourney
  • Tied to Adobe subscription
  • Aesthetic ceiling below Midjourney + Ideogram
  • Text rendering worse than Ideogram
  • No fine control
Kai's verdictA-tier. S-tier if you self-host. The reason open-source image gen matters.Symphony is the most architecturally serious 'issue tracker as control plane' approach yet — 15K GitHub stars in weeks confirms the idea resonates — but it's still a rough, self-hosted engineering preview that demands Elixir chops and a Linear-only workflow. (Verdict pending Phi's full review.)S-tier inside Photoshop (Generative Fill). B-tier standalone.B-tier standalone, A-tier value if you already pay ChatGPT. Don't pay for it separately.
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