Claude Mythos 5.1 vs DeepSeek V4 Flash Vision Exp
At a Glance
| Compare | Claude Mythos 5.1Anthropic |  DeepSeek V4 Flash Vision ExpDeepSeek |
|---|---|---|
| Pricing and Limits | ||
| Input priceFrom · USD / 1M tokens | $10.00Anthropic ↗ · Sep 2, 2026 | $0.22DeepSeek ↗ · Sep 2, 2026 |
| Output priceFrom · USD / 1M tokens | $50.00Anthropic ↗ · Sep 2, 2026 | $0.66DeepSeek ↗ · Sep 2, 2026 |
| Context windowMaximum documented tokens | 1,000K | 1,049K |
| Model facts checked | Sep 2, 2026View model evidence → | Sep 2, 2026View model evidence → |
Token prices are the lowest available sourced USD rates; input and output may use different providers. Cost ranking estimates output spend on LiveBench, not a full request bill. Ranking methodology →
Available Benchmarks
Side-by-Side Facts
| Field | Claude Mythos 5.1 | DeepSeek-V4-Flash-Vision-Exp |
|---|---|---|
| Developer | Anthropic | DeepSeek |
| Family | Claude 5 1 | Deepseek V4 Flash Vision Exp |
| Model | Claude Mythos 5.1 | DeepSeek-V4-Flash-Vision-Exp |
| Version | Claude Mythos 5.1 | DeepSeek-V4-Flash-Vision-Exp |
| Lifecycle | active | retired |
| Released | 2026-09-01 | 2026-08-21 |
| Knowledge cutoff | 2026-06-01 | Unknown |
| Input modalities | Text, Image | Text, Image |
| Output modalities | Text | Text |
| Context window | 1,000K | 1,049K |
| Total parameters | Unknown | 304.6B |
| Active parameters | Unknown | Unknown |
| License | Unknown | mit |
| Open weights | No | Yes |
| API available | Yes | Yes |
| Self-hostable | No | Yes |
| Provider access | Anthropic (Project Glasswing) | DeepSeek (Standard), Deepinfra (Standard), Fireworks Ai (Standard) |
| Capabilities | chat, generation, reasoning, tools | chat, generation, reasoning, structured_outputs, tools |
Claude Mythos 5.1 Capabilities
DeepSeek V4 Flash Vision Exp Capabilities
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Primary Evidence
Sources and Freshness
Questions
Claude Mythos 5.1 vs DeepSeek V4 Flash Vision Exp FAQs
Is Claude Mythos 5.1 or DeepSeek V4 Flash Vision Exp better for coding?+
This comparison does not currently contain a protocol-matched coding benchmark for both Claude Mythos 5.1 and DeepSeek V4 Flash Vision Exp, so Model Markets cannot name a coding leader from pricing, context size, or capability labels alone.
Which is cheaper, Claude Mythos 5.1 or DeepSeek V4 Flash Vision Exp?+
Claude Mythos 5.1 is $10.00 and DeepSeek V4 Flash Vision Exp is $0.22 per million tokens, so DeepSeek V4 Flash Vision Exp is cheaper on this metric. Claude Mythos 5.1 is $50.00 and DeepSeek V4 Flash Vision Exp is $0.66 per million tokens, so DeepSeek V4 Flash Vision Exp is cheaper on this metric.
Which has a larger context window, Claude Mythos 5.1 or DeepSeek V4 Flash Vision Exp?+
DeepSeek V4 Flash Vision Exp has the larger sourced context window. Claude Mythos 5.1 supports 1,000K and DeepSeek V4 Flash Vision Exp supports 1,049K.
Which performs better in benchmarks, Claude Mythos 5.1 or DeepSeek V4 Flash Vision Exp?+
There is no overall benchmark winner: At least two independently verified, protocol-matched benchmarks are required for an overall winner.
Can Claude Mythos 5.1 or DeepSeek V4 Flash Vision Exp be self-hosted?+
DeepSeek V4 Flash Vision Exp is the only model in this pair currently marked as self-hostable. Claude Mythos 5.1 is not marked open weight; DeepSeek V4 Flash Vision Exp is open weight.
Can Claude Mythos 5.1 and DeepSeek V4 Flash Vision Exp understand images?+
Claude Mythos 5.1 is documented with image input; DeepSeek V4 Flash Vision Exp is documented with image input. This reflects supported input modalities, not vision quality.
Which can generate longer answers, Claude Mythos 5.1 or DeepSeek V4 Flash Vision Exp?+
DeepSeek V4 Flash Vision Exp has the larger sourced maximum output: Claude Mythos 5.1 supports 128K and DeepSeek V4 Flash Vision Exp supports 393K output tokens.
Do Claude Mythos 5.1 and DeepSeek V4 Flash Vision Exp support reasoning and tool use?+
Claude Mythos 5.1: reasoning, tool calling, and image input. DeepSeek V4 Flash Vision Exp: reasoning, tool calling, and image input. Feature support does not establish relative quality.
Which is available from more inference providers, Claude Mythos 5.1 or DeepSeek V4 Flash Vision Exp?+
Claude Mythos 5.1 has 1 sourced provider route; DeepSeek V4 Flash Vision Exp has 3, so DeepSeek V4 Flash Vision Exp has broader tracked availability.
Which offers better value, Claude Mythos 5.1 or DeepSeek V4 Flash Vision Exp?+
There is no universal value winner. Compare the input and output prices above with the matched benchmark result for your workload: cheaper tokens can be offset by different quality, token usage, latency, or provider availability.