DeepSeek V4.1 Flash 1017 vs Claude Haiku 5.5 vs Muse Wonder
Claude Haiku 5.5 comes out ahead, 83 to 79 and 68 on our weighted score, and it is the cheaper option too.
DeepSeekDeepSeek V4.1 Flash 1017
79/100- ECI158.8
- Price$0.15 / $0.60
- Context1M
- Our pick
AnthropicClaude Haiku 5.5
83/100- ECI160.4
- Price$0.10 / $0.50
- Context1M
MetaMuse Wonder
68/100- ECI161.7
- Price$4.00 / $20.00
- Context1.05M
Claude Haiku 5.5 is our pick
Claude Haiku 5.5 is the better all-round choice, scoring 83/100 against DeepSeek V4.1 Flash 1017 (79) and Muse Wonder (68). It leads on price. Muse Wonder wins on capability and inputs & features. The score weighs capability 50%, price 25%, inputs & features 15%, context window 10%.
- CapabilityMuse WonderCapabilities Index (ECI): Muse Wonder 161.7 · Claude Haiku 5.5 160.4 · DeepSeek V4.1 Flash 1017 158.8
- Lowest priceClaude Haiku 5.5Claude Haiku 5.5 $0.20 · DeepSeek V4.1 Flash 1017 $0.263 · Muse Wonder $8.00 per 1M tokens (3:1 blend)
- Longest contextMuse WonderMuse Wonder 1,048,576 · DeepSeek V4.1 Flash 1017 1,000,000 · Claude Haiku 5.5 1,000,000 tokens
- Widest inputsMuse WonderDeepSeek V4.1 Flash 1017: Text, Images · Claude Haiku 5.5: Text, Images, PDFs · Muse Wonder: Text, Images, PDFs, Audio, Video
- Self-hostingDeepSeek V4.1 Flash 1017Publishes downloadable weights (MIT)
| Measure | Weight | DeepSeek V4.1 Flash 1017 | Claude Haiku 5.5 | Muse Wonder |
|---|---|---|---|---|
| CapabilityCapabilities Index (ECI) | 50% | 87 | 89 | 91 |
| Price | 25% | 74 | 80 | 7 |
| Inputs & features | 15% | 70 | 80 | 100 |
| Context window | 10% | 60 | 60 | 61 |
| Overall | 100% | 79/100 | 83/100 | 68/100 |
Every spec in one table
Highlighted cells lead their row. Dashes mean the data is not published.
| Specification | DeepSeek V4.1 Flash 1017DeepSeek | Claude Haiku 5.5Anthropic | Muse WonderMeta |
|---|---|---|---|
| Capability | |||
| Capabilities Index (ECI) | 158.8 | 160.4 | 161.7 (best) |
| ECI rank | #19 of 165 | #14 of 165 | #13 of 165 (best) |
| GPQA DiamondGraduate-level science questions | 93.2% (best) | 89.7% | — |
| FrontierMath Tiers 1–3Research-level mathematics | 71.2% | 75.1% | 82.1% (best) |
| OTIS Mock AIME 2024–2025Competition mathematics | 99.4% (best) | 98.9% | 99.4% (best) |
| SimpleQA VerifiedShort factual questions | 42.5% (best) | 23.8% | — |
| Price per million tokens | |||
| Input | $0.15 | $0.10 (best) | $4.00 |
| Output | $0.60 | $0.50 (best) | $20.00 |
| Cached input | $0.003 (best) | $0.01 | $0.20 |
| Blended (3:1) | $0.263 | $0.20 (best) | $8.00 |
| Long-context rate | Same rate | Over 100K: $0.50 / $2.50 | Same rate |
| Price source | Official DeepSeek API | Official Anthropic API | Official Meta API |
| Limits | |||
| Context window | 1,000,000 tokens | 1,000,000 tokens | 1,048,576 tokens (best) |
| Max output | 384,000 tokens (best) | 128,000 tokens | 131,072 tokens |
| Inputs and features | |||
| Text | Yes | Yes | Yes |
| Images | Yes | Yes | Yes |
| PDFs | No | Yes | Yes |
| Audio | No | No | Yes |
| Video | No | No | Yes |
| Reasoning | Yeslow · high · max | Yeslow · medium · high · xhigh · max | Yesminimal · low · medium · high · xhigh · max |
| Tool calling | Yes | Yes | Yes |
| Structured output | Yes | Yes | Yes |
| Availability | |||
| Weights | OpenMIT | Proprietary | Proprietary |
| API model ID | deepseek-flash | claude-haiku-5-5 | muse-wonder-1.0 |
| API providers | 40 (best) | 33 | 9 |
| Released | Oct 17, 2026 | Oct 7, 2026 | Oct 12, 2026 |
| Knowledge cutoff | May 2025 | Jun 2026 | — |
What would a month cost?
Enter your expected volume in millions of tokens. List prices only; caching and batch discounts would lower these.
- DeepSeek V4.1 Flash 1017$2.70
- Claude Haiku 5.5$2.00
- Muse Wonder$80.00
Which should you choose?
Which is better: DeepSeek V4.1 Flash 1017, Claude Haiku 5.5 or Muse Wonder?
Claude Haiku 5.5 is the better all-round choice, scoring 83/100 against DeepSeek V4.1 Flash 1017 (79) and Muse Wonder (68). It leads on price. Muse Wonder wins on capability and inputs & features. The score weighs capability 50%, price 25%, inputs & features 15%, context window 10%.
Which is cheaper, DeepSeek V4.1 Flash 1017, Claude Haiku 5.5 or Muse Wonder?
Claude Haiku 5.5 is cheaper at $0.10 input / $0.50 output per million tokens (official Anthropic API price). DeepSeek V4.1 Flash 1017 costs $0.15 input / $0.60 output per million tokens (official DeepSeek API price); Muse Wonder costs $4.00 input / $20.00 output per million tokens (official Meta API price). At a typical mix of three input tokens to one output token, that is $0.20 per million tokens for Claude Haiku 5.5 versus $0.263 for DeepSeek V4.1 Flash 1017 (1.3× as much) and $8.00 for Muse Wonder (40× as much).
Which scores higher on benchmarks?
Muse Wonder scores higher on the Capabilities Index (ECI): Muse Wonder 161.7 (#13 of 165), Claude Haiku 5.5 160.4 (#14 of 165) and DeepSeek V4.1 Flash 1017 158.8 (#19 of 165). The confidence ranges of the top two overlap (159.2–164.6 vs 157.3–163.8), so treat the gap as small. On individual benchmarks: FrontierMath Tiers 1–3 — Muse Wonder 82.1%, Claude Haiku 5.5 75.1%, DeepSeek V4.1 Flash 1017 71.2%; OTIS Mock AIME 2024–2025 — DeepSeek V4.1 Flash 1017 99.4%, Muse Wonder 99.4%, Claude Haiku 5.5 98.9%.
Which is better for coding?
There are no published SWE-bench Verified results for DeepSeek V4.1 Flash 1017, Claude Haiku 5.5 and Muse Wonder yet, so there is no like-for-like coding score. On overall capability, Muse Wonder leads, which tends to carry over to coding, but test on your own codebase. All three support tool calling for agent workflows.
Which has the bigger context window?
Muse Wonder has the largest context window at 1,048,576 tokens, against 1,000,000 for DeepSeek V4.1 Flash 1017 and 1,000,000 for Claude Haiku 5.5. Maximum output per response: DeepSeek V4.1 Flash 1017 up to 384,000, Claude Haiku 5.5 up to 128,000, Muse Wonder up to 131,072 tokens.
Which can read images, PDFs, audio or video?
DeepSeek V4.1 Flash 1017 accepts text and images; Claude Haiku 5.5 accepts text, images and PDFs; Muse Wonder accepts text, images, PDFs, audio and video. Muse Wonder handles the widest range of inputs.
Are any of these open source?
DeepSeek V4.1 Flash 1017 publishes its weights (MIT) and can be self-hosted; Claude Haiku 5.5 and Muse Wonder is proprietary.
Which is newer?
DeepSeek V4.1 Flash 1017 is the newest, released Oct 17, 2026. Muse Wonder came out Oct 12, 2026; Claude Haiku 5.5 came out Oct 7, 2026. Knowledge cutoff: DeepSeek V4.1 Flash 1017 May 2025, Claude Haiku 5.5 Jun 2026.
How do you decide the winner?
Each model gets a 0–100 score on capability (50%, independent benchmark results); price (25%, blended price per million tokens (3 input : 1 output), log scale); inputs & features (15%, image, PDF, audio and video input, tool calling, structured output and reasoning); context window (10%, maximum tokens per request, log scale). Dimensions missing for any model are dropped and the remaining weights rescaled, so every model is judged on the same evidence. Specs and prices come from public model listings and the labs’ own API pages; capability scores come from independent benchmark runs. Data updated Nov 2, 2026.
Related comparisons
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- DeepSeek V4.1 Flash 1017 vs Gemini 3.7 FlashGoogle · ECI 158.2
- Claude Haiku 5.5 vs GPT-6 LunaOpenAI · ECI 156.8
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- Claude Haiku 5.5 vs Gemini 3.7 FlashGoogle · ECI 158.2
