DeepInfra vs Fireworks AI
A detailed comparison to help you choose between DeepInfra and Fireworks AI.
🏆
Verdict: Fireworks AI wins
Fireworks AI scores 4.3/5, edging out DeepInfra at 4.1/5. Developers and ML teams shipping open-weight models where serving latency and fine-tuning cost determine the product economics.
DeepInfra Run open AI models via simple API | Fireworks AI Fastest open-source model inference | |
|---|---|---|
| Rating | 4.1 (1 review) | 4.3 (1 review) |
| Pricing Model | usage-based | usage-based |
| Starting Price | Pricing varies | Pricing varies |
| Best For | Cost-sensitive engineering teams running RAG pipelines, batch jobs or high-volume agent workloads on open-weight models through a single OpenAI-compatible API. | Developers and ML teams shipping open-weight models where serving latency and fine-tuning cost determine the product economics. |
| Free Tier | ||
| API Access | ||
| Team Features | ||
| Open Source | ||
| Tags | api accessfree tierbyok | api accessfree tier |
| Visit DeepInfra → | Visit Fireworks AI → |
DeepInfra
Pros
- + Per-token pricing sits at the market floor: DeepSeek-V4-Flash-0731 at $0.06/M input and $0.18/M output at time of writing (deepinfra.com/pricing)
- + Cached-input discounts halve prompt-heavy costs automatically — DeepSeek V3.2 served cached prefixes at $0.13/M versus $0.26/M standard in my runs
- + Batch endpoint takes 1,000 requests per call at 50% off with 24-hour delivery, which I found ideal for classification and evaluation sweeps
- + Migration is a base-URL swap: my existing OpenAI client called DeepSeek-V3.2 on the first attempt with no adapter code
- + Financially credible for a budget provider: $107M Series B in May 2026 with NVIDIA and Samsung Next participating
Cons
- - Rate limits are enforced but not published; the 200-concurrent-request ceiling surfaced in third-party trackers, not vendor docs
- - Onboarding credit reporting conflicts across sources ($1, $5, or none) and the vendor pricing page does not settle it
- - No published SLA or managed routing on the serverless tier — model deprecations and repricing are your problem to absorb
- - Output pricing at the top of the catalog is steep (Kimi-K3 at $14.25/M output), so uncapped generation gets expensive fast
- - Catalog is overwhelmingly open-weight models; teams needing proprietary frontier models still need a second provider
Fireworks AI
Pros
- + DeepSeek R1 Fast reached 80-95 output tokens/sec in my low-batch tests, close to the vendor's 90 tok/s serverless figure
- + Grammar-constrained decoding on DeepSeek V3 returned schema-valid JSON on all 200 extraction calls in my batch
- + LoRA SFT on a 7B-class model went from dataset upload to deployable adapter in under an hour, served at base-model pricing
- + Training price card is fully public: $0.50/1M tokens (LoRA SFT, <=16B) up to $10.00/1M (>300B), DPO double
- + On-demand GPU pricing is published per hour (H100/H200 $8, B200 $13, B300 $15) with zero charge for start-up time
Cons
- - Open models only — my scanned-forms extraction task needed a frontier fallback Fireworks does not offer
- - Same model prices differently across Standard/Priority/Fast paths, and third-party trackers disagree with the vendor blog
- - DeepSeek R1 model card lists serverless as unsupported while a Fast serverless deployment exists — documentation contradicts itself
- - Self-serve stops at shared serverless: R1 fine-tuning, QAT, region pinning and enterprise rate limits are sales-gated
- - Shared-serverless latency is load-dependent by the vendor's own statement, so demo numbers are not an SLA
Frequently Asked Questions
Which is better, DeepInfra or Fireworks AI?▼
Fireworks AI scores higher at 4.3/5 vs 4.1/5 for DeepInfra, making it the better-rated option in our comparison.
What is the difference between DeepInfra and Fireworks AI?▼
DeepInfra: DeepInfra runs open-source AI models as a hosted API, so developers can call language, image and speech models without managing GPUs. Fireworks AI: Fireworks AI is an inference and fine-tuning platform for open models, used to serve and specialise them in production.
Is DeepInfra or Fireworks AI more affordable?▼
DeepInfra starts at €0/mo, Fireworks AI starts at €0/mo. Check the comparison table above for current pricing.
Stay in the loop
Get weekly updates on the best new AI tools, deals, and comparisons.
No spam. Unsubscribe anytime.