FLUX.2 Pro vs Ideogram 3 vs Seedream 4.5 (2026): Which Wins
TL;DR
Seedream 4.5 is the clear current winner among these three standard-tier models. It scores 4.045 in the public Sonnet leaderboard, while Ideogram 3.0 scores 3.913 and FLUX.2 Pro scores 3.900. FLUX.2 Pro is cheaper, but no longer wins on quality.
Recommended Benchmarks
- Seedream 4.5 vs FLUX.2 Pro (2026): Which to UseSeedream 4.5 beats FLUX.2 Pro in the current Sonnet benchmark, 4.045 to 3.900, despite costing slightly more.
- Seedream 3.0 vs 4.0 vs 4.5 (2026): Which to UseSeedream 4.5 (4.045) and 4.0 (4.010) are near-tied in our blind benchmark; 3.0 trails at 3.83. See real renders of all three and which to pick at each price.
- Flux Schnell vs Dev vs Pro vs Max (2026): Which to UseFLUX.2 Max leads our 2026 Flux comparison at 3.965, ahead of Pro (3.900), Dev (3.504), and Schnell (3.350). See which Flux model fits your project and budget.
- Best AI Image Generator 2026: 18 Models RankedGPT Image 2 High leads our 18-model blind benchmark (4.16/5, 150 judgments per model). Full ranking, dimension winners, real costs, and where they all fail.
Current Sonnet Comparison
This article now uses the same Claude Sonnet 4.6 numbers as the public image leaderboard. That flips the old framing: Seedream 4.5 leads the set, Ideogram 3.0 narrowly beats FLUX.2 Pro, and FLUX.2 Pro remains the lower-cost option.
| # | Model | Sonnet Score | Cost/Image | Tier |
|---|---|---|---|---|
| 3 | Seedream 4.5 | 4.04 | $0.040 | Standard |
| 10 | Ideogram 3.0 | 3.91 | $0.040 | Standard |
| 11 | FLUX.2 Pro | 3.90 | $0.035 | Standard |
Which Should You Use?
Seedream 4.5
Strengths
- +Highest current Sonnet score in this comparison
- +Third overall in the public image leaderboard
- +Best standard-tier quality pick here
Limitations
- −Costs more than FLUX.2 Pro
Ideogram 3.0
Strengths
- +Narrowly ahead of FLUX.2 Pro in the current public table
- +Useful when an Ideogram workflow is already preferred
Limitations
- −Far behind Seedream 4.5 on current score
- −Same listed price as Seedream 4.5
FLUX.2 Pro
Strengths
- +Cheapest of the three at $0.035/image
- +Still useful for Flux-specific workflows
Limitations
- −Lowest current Sonnet score in this comparison
- −The old FLUX-wins framing is no longer current
Related Vibedex Benchmarks
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Methodology: Rankings and scores in this article align to VibeDex's current Sonnet 4.6 blind benchmark: 50 prompts, 3 passes, and 150 judgments per model across visual fidelity, physics, subject integrity, and instruction adherence. See our full methodology
FAQ
Which is better: FLUX.2 Pro, Ideogram 3.0, or Seedream 4.5?
Seedream 4.5 leads this current Sonnet comparison at 4.045. Ideogram 3.0 follows at 3.913, and FLUX.2 Pro scores 3.900.
Which one is cheapest?
FLUX.2 Pro is the cheapest at $0.035/image. Seedream 4.5 and Ideogram 3.0 are both listed at $0.040/image.
Does FLUX.2 Pro still win this comparison?
No. The retired benchmark favored FLUX.2 Pro, but the current public Sonnet leaderboard puts Seedream 4.5 first in this set.
See how every model stacks up
The Vibedex leaderboard ranks 18 image models on a 50-prompt blind benchmark, judged by Claude Sonnet 4.6 across visual fidelity, physics, subject integrity, and instruction adherence.
See the leaderboard →