Gemini 3.8 Flash vs Claude Haiku 5.5 vs Muse Spark 1.3
Claude Haiku 5.5 comes out ahead, 83 to 74 and 72 on our weighted score, and it is the cheaper option too.
GoogleGemini 3.8 Flash
74/100- ECI157.6
- Price$0.75 / $3.75
- Context1.05M
- Our pick
AnthropicClaude Haiku 5.5
83/100- ECI160.4
- Price$0.10 / $0.50
- Context1M
MetaMuse Spark 1.3
72/100- ECI157.4
- Price$1.25 / $4.25
- Context1.05M
Claude Haiku 5.5 is our pick
Claude Haiku 5.5 is the better all-round choice, scoring 83/100 against Gemini 3.8 Flash (74) and Muse Spark 1.3 (72). It leads on capability and price. The score weighs capability 50%, price 25%, inputs & features 15%, context window 10%.
- CapabilityClaude Haiku 5.5Capabilities Index (ECI): Claude Haiku 5.5 160.4 · Gemini 3.8 Flash 157.6 · Muse Spark 1.3 157.4
- Lowest priceClaude Haiku 5.5Claude Haiku 5.5 $0.20 · Gemini 3.8 Flash $1.50 · Muse Spark 1.3 $2.00 per 1M tokens (3:1 blend)
- Longest contextGemini 3.8 Flash and Muse Spark 1.3Gemini 3.8 Flash 1,048,576 · Muse Spark 1.3 1,048,576 · Claude Haiku 5.5 1,000,000 tokens
- Widest inputsGemini 3.8 Flash and Muse Spark 1.3Gemini 3.8 Flash: Text, Images, PDFs, Audio, Video · Claude Haiku 5.5: Text, Images, PDFs · Muse Spark 1.3: Text, Images, PDFs, Audio, Video
- Self-hostingNo open weightsAll three are available only through APIs
| Measure | Weight | Gemini 3.8 Flash | Claude Haiku 5.5 | Muse Spark 1.3 |
|---|---|---|---|---|
| CapabilityCapabilities Index (ECI) | 50% | 86 | 89 | 86 |
| Price | 25% | 40 | 80 | 34 |
| Inputs & features | 15% | 100 | 80 | 100 |
| Context window | 10% | 61 | 60 | 61 |
| Overall | 100% | 74/100 | 83/100 | 72/100 |
Every spec in one table
Highlighted cells lead their row. Dashes mean the data is not published.
| Specification | Gemini 3.8 FlashGoogle | Claude Haiku 5.5Anthropic | Muse Spark 1.3Meta |
|---|---|---|---|
| Capability | |||
| Capabilities Index (ECI) | 157.6 | 160.4 (best) | 157.4 |
| ECI rank | #23 of 165 | #14 of 165 (best) | #24 of 165 |
| GPQA DiamondGraduate-level science questions | 95.4% (best) | 89.7% | — |
| FrontierMath Tiers 1–3Research-level mathematics | 68.4% | 75.1% (best) | 74.4% |
| OTIS Mock AIME 2024–2025Competition mathematics | 98.9% | 98.9% | 99.2% (best) |
| SimpleQA VerifiedShort factual questions | 69.7% (best) | 23.8% | — |
| Price per million tokens | |||
| Input | $0.75 | $0.10 (best) | $1.25 |
| Output | $3.75 | $0.50 (best) | $4.25 |
| Cached input | $0.075 | $0.01 (best) | $0.15 |
| Blended (3:1) | $1.50 | $0.20 (best) | $2.00 |
| Long-context rate | Same rate | Over 100K: $0.50 / $2.50 | Same rate |
| Price source | Official Google API | Official Anthropic API | Official Meta API |
| Limits | |||
| Context window | 1,048,576 tokens (best) | 1,000,000 tokens | 1,048,576 tokens (best) |
| Max output | 65,536 tokens | 128,000 tokens | 131,072 tokens (best) |
| Inputs and features | |||
| Text | Yes | Yes | Yes |
| Images | Yes | Yes | Yes |
| PDFs | Yes | Yes | Yes |
| Audio | Yes | No | Yes |
| Video | Yes | No | Yes |
| Reasoning | Yeslow · medium · high | Yeslow · medium · high · xhigh · max | Yesminimal · low · medium · high · xhigh · max |
| Tool calling | Yes | Yes | Yes |
| Structured output | Yes | Yes | Yes |
| Availability | |||
| Weights | Proprietary | Proprietary | Proprietary |
| API model ID | gemini-3.8-flash | claude-haiku-5-5 | muse-spark-1.3 |
| API providers | 32 | 33 (best) | 17 |
| Released | Sep 2, 2026 | Oct 7, 2026 | Sep 2, 2026 |
| Knowledge cutoff | — | 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.
- Gemini 3.8 Flash$15.00
- Claude Haiku 5.5$2.00
- Muse Spark 1.3$21.00
Which should you choose?
Which is better: Gemini 3.8 Flash, Claude Haiku 5.5 or Muse Spark 1.3?
Claude Haiku 5.5 is the better all-round choice, scoring 83/100 against Gemini 3.8 Flash (74) and Muse Spark 1.3 (72). It leads on capability and price. The score weighs capability 50%, price 25%, inputs & features 15%, context window 10%.
Which is cheaper, Gemini 3.8 Flash, Claude Haiku 5.5 or Muse Spark 1.3?
Claude Haiku 5.5 is cheaper at $0.10 input / $0.50 output per million tokens (official Anthropic API price). Gemini 3.8 Flash costs $0.75 input / $3.75 output per million tokens (official Google API price); Muse Spark 1.3 costs $1.25 input / $4.25 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 $1.50 for Gemini 3.8 Flash (7.5× as much) and $2.00 for Muse Spark 1.3 (10× as much).
Which scores higher on benchmarks?
Claude Haiku 5.5 scores higher on the Capabilities Index (ECI): Claude Haiku 5.5 160.4 (#14 of 165), Gemini 3.8 Flash 157.6 (#23 of 165) and Muse Spark 1.3 157.4 (#24 of 165). The confidence ranges of the top two overlap (157.3–163.8 vs 155.5–160.9), so treat the gap as small. On individual benchmarks: FrontierMath Tiers 1–3 — Claude Haiku 5.5 75.1%, Muse Spark 1.3 74.4%, Gemini 3.8 Flash 68.4%; OTIS Mock AIME 2024–2025 — Muse Spark 1.3 99.2%, Gemini 3.8 Flash 98.9%, Claude Haiku 5.5 98.9%.
Which is better for coding?
There are no published SWE-bench Verified results for Gemini 3.8 Flash, Claude Haiku 5.5 and Muse Spark 1.3 yet, so there is no like-for-like coding score. On overall capability, Claude Haiku 5.5 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?
Gemini 3.8 Flash and Muse Spark 1.3 have the largest context windows (1,048,576 and 1,048,576 tokens), against 1,000,000 for Claude Haiku 5.5. Maximum output per response: Gemini 3.8 Flash up to 65,536, Claude Haiku 5.5 up to 128,000, Muse Spark 1.3 up to 131,072 tokens.
Which can read images, PDFs, audio or video?
Gemini 3.8 Flash accepts text, images, PDFs, audio and video; Claude Haiku 5.5 accepts text, images and PDFs; Muse Spark 1.3 accepts text, images, PDFs, audio and video. Gemini 3.8 Flash handles the widest range of inputs.
Are any of these open source?
No. Gemini 3.8 Flash, Claude Haiku 5.5 and Muse Spark 1.3 are proprietary and only available through APIs and apps.
Which is newer?
Claude Haiku 5.5 is the newest, released Oct 7, 2026. Gemini 3.8 Flash came out Sep 2, 2026; Muse Spark 1.3 came out Sep 2, 2026. Knowledge cutoff: 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.
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