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Comparison · ai-assistants
Docling vs Retell AI
A side-by-side editorial comparison of Docling and Retell AI — release velocity, themes, recent moves, and the top alternatives to consider.
Docling vs Retell AI: at a glance
What is Docling?
Docling adds Surya 2.5 and calendar files while patching format edge cases daily.
Docling ships almost daily. 2.149.0 adds opt-in extraction of images embedded in PDFs, a reworked CLI, mlx-audio speech recognition and a MiniCPM-OCR preset, plus fixes across Markdown, LaTeX, JATS, HTML and CSV. 2.148.0 added Surya v2.5 and an iCalendar backend, and 2.146.0 brought three more OCR presets.
What is Retell AI?
Voice-AI platform building toward composable, flexibly-routed agents
Retell builds voice AI agents, and the captured releases (through early 2026) center on making complex agents maintainable and adaptive: Agent Transfer for handing context between modular agents, Flex Mode for non-linear flow navigation, reusable Flow Components, and node-level knowledge bases. Add to that a chat widget, an AI QA Analyst, and periodic pricing adjustments.
Docling vs Retell AI: editorial side-by-side
Docling
5.0AI-ASSISTANTS
Docling adds Surya 2.5 and calendar files while patching format edge cases daily.
◆ Current state
Docling ships almost daily. 2.149.0 adds opt-in extraction of images embedded in PDFs, a reworked CLI, mlx-audio speech recognition and a MiniCPM-OCR preset, plus fixes across Markdown, LaTeX, JATS, HTML and CSV. 2.148.0 added Surya v2.5 and an iCalendar backend, and 2.146.0 brought three more OCR presets.
◆ Where it's heading
Docling keeps widening two lists at once: the OCR and vision models it can run, and the file formats it can read, now including calendars. Most of each release is fixes for real-world documents that break parsers.
◆ Prediction
Expect more model presets as new OCR models appear and more niche formats added in the same style as the .ics backend.
Retell AI
0.0AI-ASSISTANTS
Voice-AI platform building toward composable, flexibly-routed agents
◆ Current state
Retell builds voice AI agents, and the captured releases (through early 2026) center on making complex agents maintainable and adaptive: Agent Transfer for handing context between modular agents, Flex Mode for non-linear flow navigation, reusable Flow Components, and node-level knowledge bases. Add to that a chat widget, an AI QA Analyst, and periodic pricing adjustments.
◆ Where it's heading
The arc is from rigid, single-purpose call flows toward modular, composable agent systems — reusable sub-agents and components, knowledge scoped per node, and flows that follow the caller rather than forcing a script. It's an enterprise-maintainability story layered on top of the core voice capability.
◆ Prediction
Expect continued investment in flow flexibility and agent composition, plus QA/observability tooling. Note the captured changelog runs only through January 2026, so recent cadence is unclear from this data.
Alternatives to Docling and Retell AI
Other ai-assistants products tracked by Sparkpulse, ranked by recent ship velocity. Each card links to a full editorial trajectory and lets you pivot into a head-to-head comparison with either Docling or Retell AI.
InvokeAI
InvokeAI 7 reaches beta with projects and a single widget workbench as the new default.
Claude
Claude Enterprise lets finance teams tag project spend by cost code.
LobeChat
LobeHub v2.3.2 adds task labels, MCP Apps in chat and Copilot CLI as an agent.
DocsBot AI
DocsBot closes its launch week with Evals, a way to test bot changes before customers see them.
opencode
opencode's process daemon reaches 0.5.0 and moves to protocol 8.
See all Docling alternatives → · See all Retell AI alternatives →
Recent activity from Docling and Retell AI
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 1d agoDoclingDocling 2.149: embedded PDF images, new CLI, mlx-audio ASR
- 4d agoDoclingSurya v2.5, an iCalendar backend and PDF sub/superscripts
- 5d agoDoclingInline whitespace fixes across backends
- 6d agoDoclingNew OCR presets: Unlimited-OCR 2, LightOnOCR-3, Nemotron 3.5
- 11d agoDoclingRapidOCR page orientation and InputDocument.release()
- 12d agoDoclingOCR replaces broken PDF text layers; --heading-hierarchy option
- 9mo agoRetell AIAI QA Analyst
- 10mo agoRetell AIFlex Mode for Conversation Flows ⚡
- 11mo agoRetell AIConversation Flow Components are Live! - Reusable flows & functions across agents.
- 1y agoRetell AINode KB — Smarter Knowledge Access at the Node Level
- 1y agoRetell AITelnyx Pricing Adjustment
- 1y agoRetell AIAgent Transfer ⚡
Frequently asked questions
What is the difference between Docling and Retell AI?
They serve adjacent needs but don't currently overlap on shipped themes. Docling is currently shipping more aggressively (velocity 5.0 vs 0.0), with 0 editorial sparks in the last 30 days against 0. See the at-a-glance table above for a side-by-side breakdown of velocity, recent sparks, and editorial themes.
Is Docling better than Retell AI?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Docling is currently shipping more aggressively (velocity 5.0 vs 0.0), with 0 editorial sparks in the last 30 days against 0. For your specific use case, the alternatives sections above list other ai-assistants products to evaluate alongside.
What are the best alternatives to Docling?
Top Docling alternatives in ai-assistants are ranked by recent ship velocity. Browse the "Docling alternatives" section above for the current picks, or visit /alternatives/docling for the full list with editorial commentary on each.
What are the best alternatives to Retell AI?
Top Retell AI alternatives in ai-assistants are ranked by recent ship velocity. Browse the "Retell AI alternatives" section above for the current picks, or visit /alternatives/retell for the full list with editorial commentary on each.